FRICK QUANTUM COMPRESSOR CONTROL PANEL VERSION 4.5x

Transcription

1 S M/JUL 2002 File: SERVICE MANUAL - SECTION 90 Replaces: S M/JUL 01 Dist: 3, 3a, 3b, 3c FRICK QUANTUM COMPRESSOR CONTROL PANEL VERSION 4.5x

2 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 2 Table of Contents QUANTUM CONTROLLER BOARD IDENTIFICATION... 5 Introduction... 5 Quantum Quantum Troubleshooting... 5 The Quantum Control Panel... 5 General Information... 5 What To Do Before Calling The Factory... 6 Replacing The Quantum Board... 6 QUANTUM 3 CONTROLLER... 7 What Should Occur When Powering Up The Panel... 7 What If The Operating Status Screen Is Not Shown... 7 Controller Board Pictorial... 8 Board Settings... 8 Processor Jumpers... 8 Communications Board Jumpers... 8 Flow Diagram - D.C. Voltage / Communications Harness... 9 QUANTUM 4 CONTROLLER What Should Occur When Powering Up The Panel What If The Operating Status Screen Is Not Shown Controller Board Pictorial Board Settings Processor Board Jumpers Communications Board Jumpers Com Com Flow Diagram - D.C. Voltage / Communications Harness DIGITAL BOARDS Digital Board Description Communications LED's Connections to the Quantum Logic Voltage (Power) LED Active LED Digital Inputs Digital Outputs Checking the Digital Inputs and Outputs Fuse Testing And Replacement Input and Output Module Testing and Replacement Troubleshooting an Output Troubleshooting an Input Replacing a Defective Digital Board Adding a Digital Board Digital I/O Board #1 Pictorial Digital I/O Board #2 Pictorial Digital Board Settings Communications Settings Dipswitch Settings Service Screen - Digital Board Inputs and Outputs ANALOG BOARDS Analog Board Description Communications LED's Connections to the Quantum Logic Voltage (Power) LED Active LED... 20

3 FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 3 Analog Inputs...20 Analog Outputs...20 Checking the Analog Inputs and Outputs...20 Replacing a Defective Analog Board...21 Adding an Analog Board...21 Analog Board # Analog Board # Analog Board Settings...24 Communications Settings...24 Dipswitch Settings...24 Analog Board #1 Input Jumpers...24 Analog Board #1 Output Jumpers...25 Analog Board #2 Input Jumpers...25 Analog Board #2 Output Jumpers...25 Service Screen - Analog Board Inputs and Outputs...26 ADDITIONAL SERVICE RELATED SCREENS...27 About Screen...27 Change Communications Screen...27 Scheduled Maintenance Screen...28 POWER SUPPLY IDENTIFICATION, ADJUSTING AND REPLACING...29 Identification...31 Adjusting...31 Replacing... D.C. Power Supply Layout Power One...31 Condor...32 IDENTIFYING THE TYPE OF DISPLAY...34 Display Replacement...34 Display Assembly Component Replacement Guide...34 POINT-TO-POINT FIELD WIRING DIAGRAM...35 TROUBLESHOOTING A PROBLEM THAT APPEARS UNEXPLAINABLE...36 TROUBLESHOOTING CHART FOR FRICK QUANTUM CONTROL PANEL...37 COMPRESSOR MODEL DIFFERENCES...40 SETPOINT DATA SHEETS...41 Factory Setup...41 Panel Setup...43 Calibration...46 Capacity Control Setpoints...48 Suction Pressure Control Mode # Suction Pressure Control Mode # Process Temp Control Mode # Process Temp Control Mode # Discharge Pressure Control Mode # Discharge Pressure Control Mode # User Selectable Control Mode # User Selectable Control Mode # Compressor Safeties...52 Discharge Safeties...52 Suction Safeties...52 Entering Process Temperature...52 High Level Shutdown Delay...52 Motor Control...53 Power Failure Restart...53

4 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 4 Ram Dbs Motor Starter Oil Setpoints Main Oil Injection Liquid Injection Filter Pressure Setpoints Slide Valve Setpoints Options Setback Schedule Condenser Control Setpoints Analog Control Pid Setup Compressor Sequence Setpoints Auxiliary Inputs Setup Suction Pull-Down Auxiliary Analogs Pumpdown/Dx Circuits Scheduled Maintenance Real Time Trending History Trending QUANTUM DRAWINGS Control Center Assembliy RWF / RXF RXF (12-50) RDB RWBII RETROFIT RXB / RXF (58-101) Wiring Diagram RWF (58-101) RWB II RXF (12-50) RXF (58-101) RDB Standard Digital I/O Board RXF (12-50) Digital I/O Board Standard Analog I/O Board Quantum I/O & D.C. Power Harness Communications Wiring Diagrams To Customer Remote Computer/DCS RS To Customer Remote Computer/DCS RS Multicompressor Sequencing (Lead-Lag) RS RWB II / RDB / RXB / RXF Multicompressor Sequencing (Lead-Lag) RS PRESSURE TRANSDUCER CONVERSION DATA RECOMMENDED SPARE PARTS INDEX THE FOLLOWING PUBLICATIONS ARE AVAILABLE FROM THE FRICK WEBSITE frickcold.com S O Frick Quantum Control Panel OPERATION S CS Frick Quantum Control Panel COMMUNICATIONS SETUP (setup and wiring for data communication using available protocols) E SPC Frick Quantum Control Panel SPECIFICATIONS (specs., jumper and dipswitch settings) S M Frick Quantum Control Panel (repair and troubleshooting)!!! DANGER WARNING CAUTION NOTE: Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Indicates a potentially hazardous situation or practice which, if not avoided, will result in death or serious injury. Indicates a potentially hazardous situation or practice which, if not avoided, will result in damage to equipment and/or minor injury. Indicates an operating procedure, practice, etc., or portion thereof which is essential to highlight.

5 FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 5 QUANTUM CONTROLLER BOARD IDENTIFICATION INTRODUCTION Frick Controls has over the years, strived to remain on the cutting edge of microprocessor technology and development. In addition, because of the ever-increasing speed, memory, features, and power of microprocessors, Frick Controls will continue to introduce the latest advancement in microprocessor control technology. Our microprocessor family has shared the name Quantum, over the past six years. There are currently four controllers within this family. The first two of these controllers (known as Quantum 1 and Quantum 2) are no longer in production, and as such, will not be further mentioned in this manual. The two current members in production of the Quantum family are the Quantum 3, and the Quantum 4. It is critical to the end user to be able to identify the differences between these controllers. Refer to the section in this manual entitled Quantum 3 Main Board History and Identification and Quantum 4 Main Board History and Identification for additional information as to how to identify the particular Quantum controller that you have. Throughout this manual, the two different controllers will be talked about for the most part as one (as they do function the same). Please note however that there is a separate section for both the Quantum 3 and for the Quantum 4, where all of the individual specifics are identified and explained. This is why it is important for you to be aware of which version of Quantum board you have. Quantum 3 Quantum 4 TROUBLESHOOTING THE QUANTUM CONTROL PANEL This section contains information on troubleshooting and making corrections to the boards and control circuits of the Quantum. Reference the drawings at the end of this manual. GENERAL INFORMATION: The components within the control panel can be inadvertently damaged by static electricity or mishandling. Only qualified technicians should directly handle these components. 1. DO NOT attempt to make corrections to the power supply without shutting off the power to the control panel. Accidental shorts can irreparably damage the processor boards or the display screen. 2. DO NOT HANDLE the panel boards when their cables are disconnected without first attaching a properly grounded wrist ground strap to prevent static electrical discharge from your body. Most problems encountered with the microprocessor and control circuits will be the result of a wiring fault, a blown fuse, faulty I/O module or failure of a peripheral control such as a solenoid coil or a pressure transducer. Faults in the computer, while possible, are unlikely. If a fault develops in the computer, the probability is that all functions will cease and the display screen will go blank. The control system of the compressor consists of an AC (high voltage) side, which can be either 120 volts, or 230 volts, and a DC (low voltage) side. The AC side actuates solenoids, relays, alarms, and other electromechanical functions. The DC side operates the computer and it's various sensors. When working within the panel, the AC high voltage side, which can be either nominal 120 VAC or nominal 230 VAC, CAN CAUSE INJURY OR DEATH. To troubleshoot the low-voltage side of the control circuits, it is necessary to have the following tools: 2 1. Accurate digital multimeter (capable of reading to the hundreds of a volt) 2. Small wire stripper 3. Small screwdriver (with insulated shaft) 4. Small snip nose pliers 5. Wrist Grounding strap 6. Static free grounded work surface Note: Proper panel voltage refers to the AC (high voltage) that has been supplied to the panel, which could be either nominal 120 VAC or nominal 230 VAC (Reference the Control Panel Power Specifications). Some problems that are encountered involve troubleshooting the panels digital inputs and outputs. The Digital I/O (Input/Output) boards have six Digital I/O (DIO) board connectors labeled P1 through P6. The input and output modules are wired into a DIO connector plug. Position 3 provides power and position 4 is a neutral on the DIO connectors.

6 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 6 WHAT TO DO BEFORE CALLING THE FACTORY When someone calls in to the factory with a suspected Quantum problem, sometimes the person calling doesn't provide enough information. This is because they most likely are not aware of the type of information that would be useful to factory personnel in helping to identify and correct the problem. An example of this is the statement that the Quantum is not booting (the main processor board is not starting). Unfortunately, this description is usually vague and only means that there is nothing on the display. A blank screen could be the result of many different problems. Following is a list of possible reasons for no display: No power Loose or Faulty Display Cable or Inverter Cable Bad Display Bad Backlight Inverter Bad Backlight Fluorescent Tube Wrong Combination of Display, Cable, Inverter, or Software Faulty CPU Board Before calling the factory for assistance, review the information on the following pages and try to discover and resolve your Quantum problem. The actual cause of most problems is usually not with the Quantum itself, but with something external to the Quantum. However, on the rare occasion that the problem has been identified as being the Quantum controller, use the following section as a guideline for replacing it. REPLACING THE QUANTUM BOARD The Flash Card memory load is done prior to the board to the board shipping. The customer will still need to either have their settings manually recorded, or saved to a Flash Crad, so that the new board can be setup the same as the old one. It is suggested that the operator first record all control setpoints prior to board replacement. Factory Setup settings will also be lost. The setpoint data sheets are useful for recording this information. A Maintenance Flashcard may also be purchased that will allow these setpoints to be saved electronically, and may be downloaded at a later time. Make sure that the operator can access Factory Setup to restore all compressor specific settings. The procedure to replace the main board is outlined below: 1. Shut off control power. 2. Remove the old board from the machine and the new board from its packing and place both on an anti-static surface. 3. Ensure that the jumpers on the new board are set the same as those on the old board. 4. Install the modified replacement board into the panel. 5. If program changes are necessary through a Flash Card download, then follow the directions in the Factory Setup manual (S FSI) for the procedure to reload a program Flash Card.

7 FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 7 QUANTUM 3 CONTROLLER WHAT SHOULD OCCUR WHEN POWERING UP THE PANEL The first thing that should be checked when troubleshooting the Quantum is it s powering up sequence. When powering up the Quantum, the following sequence of events are indicative of a properly working main processor board: The LED s for +5V, +12V, and 12V will turn on solid. (Lower left corner of Main PCB) LED KB will begin to blink. (Left side of Main PCB) Several initialization screens will appear (these will look very similar to the way the screen of a desktop computer appears when it is booting. The last of the initialization screens is the System Configuration screen. Various POST codes will appear. The screen will go then show Loading The Operating Status screen is shown. After the Quantum has properly powered up, the following sequence of events is indicative of proper communication to the analog and digital boards: The TX/RX LED s near the white connector will begin to blink. The Analog and Digital I/O boards TX/RX lights should be blinking. Each I/O board should have the power LED (next to the white connector) lighted and the Active LED (next to the blue Dipswitch) should be blinking. WHAT IF THE OPERATING STATUS SCREEN IS NOT SHOWN If the Operating Status screen is not shown, check the following items: 1. If no LED s are lighted, then check AC and DC power. 2. Check if the lighting of the LED s is occurring as described in the What Should Occur When Powering Up The Panel section. If the powering up sequence continues to repeat without displaying the Operating Status screen, then there is a booting problem. 3. Check if an error message is displayed when booting. Be sure to write down any error messages exactly as they appear. 4. Check that the software is OK: Is the correct software installed? Did you just install new software? If you need to clear the numerical setpoint and calibration areas of memory for any reason, clear the memory as described in the S FSI publication. NOTE: This information will be replaced by factory default values, so any setpoint and calibration data values that need to be customized must be reentered. 5. Check for bad or loose connections. 6. Check the display. If the CPU board is booting but you have no display, check the following: Check the LCD backlight tube. Look very closely at the display to see if anything is visible in the dark screen. Using a beam type source of good lighting, such as a flashlight, look for any ghost type image. If it appears that there is something on the screen but very dark, the problem maybe the LCD backlight tube. On the LG Philips, NEC and Sharp displays this tube is field replaceable. On the Samsung LCD display, it is not available and the display will have to be replaced. There may be a sticker on the display mounting plate. If there is, it will have a part number that describes the type of display. If there is no sticker, you must take the display apart to identify the display manufacturer. Verify that both the display cable and the inverter cable are firmly seated. It may be necessary to remove the video cable from the back of the LCD display and reseat it to be sure it is connected properly. Note: This is a small connector and caution should be observed so that it is not damaged due to excessive force. Check the backlight inverter connector (P4). When the Quantum board is mounted in the panel, this connector is located at the middle left of the board. The pins on the right side are odd numbered, with pin P(1) at the bottom -pin P(9) at the top. The pins on the left side are even numbered, with pin P(2) at the bottom - pin P(10) at the top. After the Quantum has booted, pin P(3) should measure +2.4 Vdc, pins P(4) and P(5) are DC grounds, and pins P(6) and P(7) should measure +12 Vdc. A bad inverter will also cause a dark display. Reference the Display Assembly Component Replacement Guide in the Identifying the Type of Display section that appears later in this manual, and check that the LCD, LCD cable, and software versions are matched correctly.

8 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 8 QUANTUM 3 CONTROLLER BOARD PICTORIAL LK25 LCD Display Cable B A B A HEAT SINK FLASH MEMORY SOCKET LCD Backlight Cable Keypad Cable Power-I/O Com. Cable +5VDC +12VDC -12VDC GND -RX/-TX +RX/+TX LK24 B A KB TP3 +5 TP4 +12 TP5-12 TP6 GND TX4 RX4 +5V V LK11 LK10 This assembly is shipped with LK11 set to position B. If a Samsung, NEC, or Sharp display is being used, then LK11 must be changed to position A. LK7 LK8 P7 LK19 BAT1 LK20 COM2 RS232 B A P7 RX1 TX1 LK16 B A RX2 TX2 LK17 B A RX3 TX3 LK18 B A TP1 GND ON SW2 LK1 LK2 LK3 LK4 LK5 LK6 LK7 LK8 LK9 LK10 LK11 LK12 LK13 LK14 LK15 SW COM1 RS- 422 RS- 485 COM2 RS- 422 RS- 485 COM3 RS- 422 RS Dip Switch Pack Communications Board (large bottom board) Processor Board (small top board) Note: There are duplicate numbers for the links on the processor (smaller) board and the communications (larger) board. If you must make a change to a jumper (link), then ensure that you modify the correct link. QUANTUM 3 BOARD SETTINGS Processor Board Jumpers Communications Board Jumpers A COM3 IRQ4 LK2 in Pull down COM1 LK1 RS-422/485 (Rx-/Tx-) B * COM3 IRQ11 out* No pull down A COM4 IRQ3 LK3 in Terminate COM1 LK2 RS-422/485 B * COM4 IRQ10 out* No termination in RS-422 Terminated LK4 in Pull up COM1 LK3 RS-422/485 (Rx+/Tx+) out* RS-422 Not Terminated out* No pull up in* RS-485 Receiver Enabled LK5 in Pull down COM1 LK4 RS-422 (Tx-) out RS-485 Receiver Disabled out* No pull down in* RS-485 Terminated LK6 in Pull up COM1 LK5 RS-422 (Tx+) out RS-485 Not Terminated out* No pull up in* Watchdog timer Enabled LK7 in Pull down COM2 LK6 RS-422/485 (Rx-/Tx-) out Watchdog timer Disabled out* No pull down in 2 second Watchdog timer timeout LK8 in Terminate COM2 LK7 RS-422/485 out* 8 second Watchdog timer timeout out* No termination A +5V Backlight Voltage (Samsung, NEC, Sharp) LK10 in Pull up COM2 LK8 RS-422/485 (Rx+/Tx+) B * +12V Backlight Voltage (LG Philips Display) out* No pull up A +5V LCD Supply (Samsung, NEC, Sharp) LK11 in Pull down COM2 LK9 RS-422 (Tx-) B * +3.3V LCD Supply (LG Philips Display) out* No pull down in* Bit 1 of 259H Logic 1 User Application Link LK12 in Pull up COM2 LK10 RS-422 (Tx+) out Bit 1 of 259H Logic 0 User Application Link out* No pull up in* Bit 2 of 259H Logic 1 User Application Link LK13 A * COM1 RS-485 LK16 out Bit 2 of 259H Logic 0 User Application Link B COM1 RS-422 * Standard Setting A * COM2 RS-485 LK17 B COM2 RS-422 in* Select RS-422/RS-485 for COM2 LK19 out Select RS-232 for COM2 A * Battery Backup Enabled LK20 B Battery Backup Disabled (CMOS Cleared) LK25 in* Select Compact Flash card as master device out Select Compact Flash card as slave device * Standard Setting

9 FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 9 QUANTUM 3 FLOW DIAGRAM - D.C. VOLTAGE / COMMUNICATIONS HARNESS Power Supply (Condor shown). Digital Board 1 Digital Board 2 Factory Connector DC Power - I/O Communications Harness P/N 640B0038H01 Analog Board 2 Analog Board 1 Keypad Cable P/N 640B0031H01 Display Cable (refer to Display Assembly Component Replacement Guide) Backlight Tube (refer to Display Assembly Component Replacement Guide) Caution! High AC voltage at this connector. Quantum 3 Display (refer to the chart on page 34 to identify type of display). Inverter P/N 333Q Inverter Cable (refer to Display Assembly Component Replacement Guide) This pictorial represents a typical configuration using the Quantum 3 and is not to scale. Specific units may or may not have both Digital and Analog boards, depending on options. Additionally, the power supply may vary. The pictorial is meant to show the proper interconnection of the D.C. power - I/O communications harness, keyboard cable and display harness and hardware components.

10 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 10 QUANTUM 4 CONTROLLER WHAT SHOULD OCCUR WHEN POWERING UP THE PANEL The first thing that should be checked when troubleshooting the Quantum is it s powering up sequence. When powering up the Quantum, the following sequence of events are indicative of a properly working main processor board: Green PWR (Power) LED will turn on solid (upper right corner of main PCB). Red FLASH LED will begin to intermittently during the Boot process. It will then go out once the Operating Status screen appears. LED D8 (on the smaller board) will start to blink at the rate of about once per second. It will continue to blink after the Quantum has booted. Once the screen displays "Loading ", LED's D4, D5, D7 and D8 will be on solid. The Operating Status screen will appear. Once actual data has been displayed on this screen, LED D13 will come on solid and D10, D11, and D12 will start to flash at a quick rate. After the Quantum has properly powered up, the following sequence of events is indicative of proper communication to the analog and digital boards: The TX/RX LED s near the white connector will begin to blink. The Analog and Digital I/O boards TX/RX lights should be blinking. Each I/O board should have the power LED (next to the white connector) lighted and the Active LED (next to the blue Dipswitch) should be blinking. WHAT IF THE OPERATING STATUS SCREEN IS NOT SHOWN If the Operating Status screen is not shown, check the following items: 1. If no LED s are lighted, then check power AC and DC. 2. Check if the lighting of the LED s is occurring as described in the What Should Occur When Powering Up The Panel section. If the powering up sequence continues to repeat without displaying the Operating Status screen, then there is a booting problem. 3. Check if an error message is displayed when booting. Be sure to write down any error messages exactly as they appear. 4. Check that the software is OK: Is the correct software installed? Did you just install new software? If you need to clear the numerical setpoint and calibration areas of memory for any reason, clear the memory as described in the S FSI publication. NOTE: This information will be replaced by factory default values, so any setpoint and calibration data values that need to be customized must be reentered. 5. Check for bad connections. 6. Check the display. If the CPU board is booting but you have no display, check the following: Check the LCD backlight tube. Look very closely at the display to see if anything is visible in the dark screen. Using a beam type source of good lighting, such as a flashlight, look for any ghost type image. If it appears that there is something on the screen but very dark, the problem maybe the LCD backlight tube. On the LG Philips, NEC and Sharp displays this tube is field replaceable. On the Samsung LCD display it is not available and the display will have to be replaced. There may be a sticker on the display mounting plate. If there is, it will have a part number that describes the type of display. If there is no sticker, you must take the display apart to identify the display manufacturer. Verify that both the display cable and the inverter cable are firmly seated. These cables both originate from the same connector on the Quantum. It may be necessary to remove the video cable from the back of the LCD display and reseat it to be sure it is connected properly. Note: This is a small connector and caution should be observed so that it is not damaged due to excessive force. Reference the Display Assembly Component Replacement Guide at the end of this section, and check that the LCD, LCD cable, and software versions are matched correctly.

11 PL5 PL15 LK3 LK4 A B PL11 Flash Card Socket (Located under board) This assembly is shipped with LK4 set to "B" position for an LG Philips display. If using a Samsung, NEC or Sharp Display, set LK4 to position "A". Display Cable Keyboard Cable FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 11 QUANTUM 4 CONTROLLER BOARD PICTORIAL COM TB3 PL1 PL3 PL3 RS-232 PL4 PL B A LK5 LK6 PL2 COM LK COM-1 LK1 LK3 LK4 D8 KB A B LK17 TB2TB1 RS-422 LK2 RS-485 LK5 LK6 LK7 LK8 LK9 LK10 RS-422 RS-485 COM2 (TX) D1 B A A COM1 (RX) B D2 LK16 LK11 To set Comm-2 for RS-232 operation, set LK11 to "A" position. COM2 (RX) D6 To set Comm-2 for RS-422/485 operation, set LK11 to "B" position. PL2 PL1 PL6 PL10 COM1 (TX) PL14 D3 PORT 80H LK8LK10 D4 D5 D7 LK9 D8 D10 D11 D12 D13 ON SW PL16 LK11 LK12 FLASH PWR LK2 PL8 I/O Cable PL13 PL18 PL19 LK1 PL7 PL9 PL12 +5VDC RET / GND RET / GND +12VDC PL17 Power Cable -RX/-TX +RX/+TX SUSP PL24 Note: There are duplicate numbers for the links on the processor (larger) board and the communications (smaller) board. If you must make a change to a jumper (link), then ensure that you modify the correct link. Processor Board Jumpers in 2 second Watchdog timer timeout LK1 out* 8 second Watchdog timer timeout in* Watchdog timer Enabled LK2 out Watchdog timer Disabled A +5V Backlight Voltage (Samsung, NEC, Sharp) LK3 B * +12V Backlight Voltage (LG Philips Display) A +5V LCD Supply (Samsung, NEC, Sharp) LK4 B * +3.3V LCD Supply (LG Philips Display) A COM4 IRQ3 LK5 B * COM4 IRQ10 A COM3 IRQ4 LK6 B * COM3 IRQ11 A * Battery Backup Enabled LK7 B Battery Backup Disabled (CMOS Cleared) LK8 LK9 LK10 LK11 LK12 in* in* in in* in* RS-485 Receiver Enabled RS-485 Terminated RS-422 Terminated Bit 1 of 259H Logic 1 User Application Link Bit 2 of 259H Logic 1 User Application Link out out out* out out RS-485 Receiver Disabled RS-485 Not Terminated RS-422 Not Terminated Bit 1 of 259H Logic 0 User Application Link Bit 2 of 259H Logic 0 User Application Link * Standard Setting Processor Board (large bottom board) Communications Board (small top board) QUANTUM 4 BOARD SETTINGS Communications Board Jumpers Com-1 (TB1) in Terminate COM1 LK2 out* No termination in Pull down COM1 LK7 out* No pull down in* Pull up COM1 LK8 out No pull up in Pull down COM1 LK9 out* No pull down in Pull up COM1 LK10 out* No pull up A COM1 RS-422 (TB1) LK16 B* COM1 RS-485 (TB1) * Standard Setting RS-422/485 RS-422/485 (Rx-/Tx-) RS-422/485 (Rx-/Tx+) RS-422 (Tx-) RS-422 (Tx+) Com-2 (TB2 - TB3) in Terminate COM2 LK1 RS-422/485 out* No termination in Pull down COM2 LK3 RS-422/485 (Rx-/Tx-) out* No pull down in Pull up COM2 LK4 RS-422/485 (Rx-/Tx+) out* No pull up in Pull down COM2 LK5 RS-422 (Tx-) out* No pull down in Pull up COM2 LK6 RS-422 (Tx+) out* No pull up A Select RS-232 for COM2 (TB2) LK11 B* Select RS-422/RS-485 for COM2 (TB3) A COM2 RS-422 (TB2) LK17 B* COM2 RS-485 (TB2) * Standard Setting

12 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 12 QUANTUM 4 FLOW DIAGRAM - D.C. VOLTAGE / COMMUNICATIONS HARNESS Power Supply (Condor shown). Digital Board 1 Digital Board 2 Factory Connector DC Power - I/O Communications Harness P/N 640B0038H01 Analog Board 2 Quantum 4 Adapter Harness P/N 649B0862H01 Analog Board 1 Quantum 4 Backlight Tube (refer to Display Assembly Component Replacement Guide) Display (refer to Display Assembly Component Replacement Guide) Caution! High AC voltage at this connector. 2 1 P P Flash Card socket located under board Keypad Cable P/N 640B0031H01 Inverter P/N 333Q Display/Inverter Cable P/N 649D4824H01 This pictorial represents a typical configuration using the Quantum 4, and is not to scale. Specific units may or may not have both Digital and Analog boards, depending on options. Additionally, the power supply may vary. The pictorial is meant to show the proper interconnection of the D.C. power - I/O communications harness, keyboard cable and display harness and hardware components.

13 FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 13 DIGITAL BOARDS The information that follows in this section can help locate problems that can occur with Digital Input and Output circuit boards, and their interaction with the Quantum controller. Digital Board Description The Digital Board is actually a small microprocessor board and programmed to control discrete outputs, or accepting discrete inputs, from external electrical devices. Each Digital Board has the capability of 24 independent channels or I/O (Input/Output). With the Quantum Compressor Control, these I/O channels are dedicated as to their function, through the operating system (software), enabled options and external wiring. Each channel that is used by the software will have a module plugged into it. A yellow module indicates that it is used for Inputs. A black module is used for Outputs. The standard Quantum compressor control can have up to two Digital Boards (depending on options). Communications LED's The Quantum controller is in constant communication with all Digital (and Analog) Boards. You will notice on each Digital and Analog board, that there are a pair of LED's that are labeled as RX and TX. These letters represent Receive (RX) and Transmit (TX). These LED's should be flashing at a fairly high rate during normal operation. This indicates that the Quantum, and the Digital Board that you are looking at, are properly communicating with each other. Reference the JUMPER AND DIPSWITCH SETTINGS" section later in this manual. This section contains the dipswitch settings for addressing the Digital I/O Boards numbers (1) through (6), although only the first two boards can be addressed. When these switches are properly set, the Quantum is able to serially communicate with each I/O board and provide control signals and data exchange. If these switches are not properly set, the result will be lost or failed communications (displayed in the Communications Status box on the Home screen), or the wrong outputs being energized, or the wrong inputs being received. Connections to the Quantum As stated earlier, the Quantum standard compressor control system utilizes up to two Digital, and two Analog Boards. To connect all of these boards together so that the Quantum can control them, they must be interconnected with a wiring harness that provides all of the necessary D.C. voltage requirements, as well as the communications capabilities. A diagram of this wiring harness can be found later in this manual (see the Power I/O Wiring Harness drawing). This harness has an 18 pin connector at one end that plugs into the Quantum. Another connector plugs into the power supply. The remaining four connectors (16 pin) will plug into each of the Digital and Analog Boards in the system (up to four total). Upon close examination of this harness, you will notice that each of the connectors for both the Quantum and the four I/O boards, have two rows of connections. The wires that are inserted into the positions of one row, are internally daisychained on each I/O board, to continue the voltages and signals to the adjacent row. Therefore, any time that a connector is unplugged from the daisychain, these voltages and signals cannot continue through the daisychain to the next board. Whenever a plug is not to be inserted into a board, either for service or if not all boards are present because of the options that are not being used, then a shunting plug (refer to Recommended Spare Parts list) must be installed onto the open connector. The four wires that feed from the power supply to the Quantum provide all of the necessary D.C. voltage that is required (+5 Vdc, -12 Vdc, +12 Vdc, and Return or Common). The voltages are passed through the connector on the Quantum, and two new signals are generated by the Quantum to be passed on through the daisychain to the I/O boards. These two signals are the RX (receive) and TX (transmit). These signals are the means by which the Quantum communicates to the I/O. The Digital Boards only require the +5 Vdc voltage and the Return (or common) for logic power. The communications signals (RX & TX) are required by all boards. Logic Voltage (Power) LED Located on the Digital Board is a Power LED. This LED will be illuminated as long as the Control Power switch is ON, and the proper voltage is present at the Quantum power supply. The power supply generates the +5 Vdc voltage, and passes it on through the Power-I/O harness. This LED does not indicate however that the proper voltage is necessarily present at the board, only that the voltage is enough to energize the voltage sensing circuitry. If a voltage related problem is suspected with regard to a Digital Board, the only way to actually determine this is to read the voltage on a Digital Voltage Meter (DVM ). This may be accomplished by locating the white power / communications connector on the board. Notice that the Digital Board has one of these connectors on both ends of the board. The associated power/communications harness will only be plugged into one of these connectors. Take the red (positive) probe of the DVM and carefully insert the end into the "+5V" lead, and the black (negative) probe end into the "RET" (Return or Common) lead, as shown below: +5V RET Set the DVM to read "DC", and set the proper range. The voltage reading must read a minimum of Vdc. The Power-I/O harness will have an associated voltage drop at each board connection. As an example, if you are reading the voltage at the first I/O board in the daisychain, and it

14 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 14 reads 4.98 Vdc, you can be assured that the voltage at the subsequent connections for the remaining boards will be lower yet. The voltage will need to be corrected for proper operation of the system. The cause for a low voltage reading could be: The Quantum power supply may need adjustment (see the section on power supplies). The Power-I/O communications harness has a problem (a new harness may be needed). A problem may exist with one of the I/O boards (Digital or Analog). If the power LED is not lighted, check the cable for proper connectivity. Note: Each board provides the necessary connections to feed all signals to the following connectors. If the auxiliary Analog or Digital Board is not present then a jumper plug (see Recommended Spare Parts List) must be installed to daisychain the signals. The most common symptom that is be exhibited by a low +5 Vdc voltage to the Digital Boards is an alarm message that reads "Digital Board Reset Shutdown". Active LED The Digital Boards have an Active LED indicator on the board that blinks when the board s software is running. If the Active LED is not blinking, check to ensure that the EPROM is installed properly. The EPROM is located in chip slot U8, next to the power connector. Digital Inputs A Digital Input is the portion of the hardware that allows devices such as limit switches, relay contacts, and level switches, to interface with the Quantum. The software program within the Quantum is constantly looking at these Input channels, via communications, and based upon whether a control voltage is present or not, will provide the necessary control for an associated Output channel. For instance, if a control voltage is present on the Oil Level Sensor input, the software will determine that the Separator has sufficient oil level for the oil heaters to be energized (if the temperature of the oil is also sensed to be low. Temperature sensing will be discussed in the Analog Input section). There are two possible varieties of Digital Input modules used on standard compressor control packages. One is for 120 Volt controls, and the other is for 240 volt controls. Both of these module styles are yellow in color. A side profile of these modules is shown below: COM OUT VDC 5VDC LOGIC VAC AC INPUT VAC Input COM OUT VDC 5VDC LOGIC These Input modules, can be identified as to their operating voltage by looking at either the side, as shown above, or from the top. You will notice the module operating voltage printed on the top, and the voltage range printed on the side VAC AC INPUT VAC Input Never plug a 120 Volt Input module into a 240 Volt system, and vice-versa. Never plug an Output module into a position designated for an Input module. You will notice that when a module is plugged into the Digital board, there is a fuse located directly adjacent to the module. This fuse is of the plugable variety, and must be plugged into the IN position for an Input module. Digital Outputs A Digital Output is the portion of the hardware that the Quantum is to control (energize). These devices include solenoids, relay coils, and heaters to be energized, based upon the logic within the Quantum software program. There is one variety of Digital Output modules used on standard compressor control packages. This one module will handle both 120 Volt controls, and 240 volt controls. This module is black in color. A side profile of this module is shown below: Although this Output module is labeled as 280 VAC on the top, and on the side, it can be used on both 120 and 240 volt applications. Never plug an Input module into a position designated for an Output module. You will notice that when a module is plugged into the Digital Board, there is a fuse located directly adjacent to the module. This fuse is of the plugable variety, and must be plugged into the OUT position for an Output module. Checking the Digital Inputs and Outputs Some problems that may be encountered involve troubleshooting the digital inputs and outputs. The Digital I/O (Input / Output) Boards have six Digital I/O (DIO) board connectors labeled P1 through P6. The Input and Output modules are wired to a DIO connector plug. Position 3 provides power and position 4 is a neutral on the DIO connectors. Positions 1, 2, 5, and 6 are signal connections, as shown below: Position 1 Signal Position 2 Signal 3-8 VDC DC CONTROL A 280VAC AC OUTPUT /240 VAC Output HOT NEUTRAL Position 3 Signal Position 4 Signal The Digital I/O board s I/O modules are configured by proper module selection, AC or DC, operating voltage, input or output, and moving the fuse to the in or out position. An LED is associated with each module and displays the state of each module. A lighted LED represents an Input that is High, receiving a signal or an Output that is On. Each of the sixteen modules has a corresponding software configuration screen. If a properly configured Digital I/O is not responding correctly, first look at the Digital Board on the Service Screen (on page 18) and check if the module is on. If it is

15 FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 15 not on, check if the LED on the Digital Board is also not lit. If the LED is not lit, then check the fuse. If the fuse is OK, then check the module. Fuse Testing And Replacement 1. Power off the panel. 2. Open the panel door. 3. Remove the questionable fuse. 4. Place the questionable fuse into the fuse tester at the one end of each Digital I/O Board (refer to the Digital Board drawings at the end of this section for exact fuse tester location). 5. Power on the panel. 6. Check the LED on the tester. If the LED is lit, the fuse is OK. 7. Power off the panel. 8. If the fuse is faulty, check for external shorts on the corresponding circuit, the replace the fuse with a new plug-type fuse (refer to Recommended Spare Parts list). Input and Output Module Testing and Replacement 1. Power off the panel. 2. Open the panel door. 3. Replace the questionable module. 4. Power on the panel. 5. If it is an Output module, check for proper panel voltage on the DIO connector plug. Check the voltage between position 4 (neutral) and the associated position to the Output module. 6. If it is an Input module, check if the associated LED is on when power is applied to the module. Troubleshooting an Output 1. Make sure the LED associated with the Output is on when power is applied to the module. 2. If the LED is not on when it should be and there is no operating condition preventing it, contact the Frick Service Department. 3. If the LED is on when it should be, check for proper panel voltage on the DIO connector plug. Check the voltage between the position 4 (neutral) and the associated position to the Output module. 4. If the voltage is OK, check for proper panel voltage between the associated position to the Output module on the DIO connector and the associated position on the terminal strip. 5. If the voltage is OK, check the wiring external to the panel. 6. If voltage is not OK, check the fuse. 7. If the fuse is OK then check the module. 8. If the module is OK, check for proper panel voltage on the DIO connector plug between position 3 (Hot) and position 4 (neutral). Troubleshooting an Input 1. Make sure the LED associated with the Input is on when power is applied to the module. 2. If the LED is on then the fuse and Input module are good. 3. If the LED is on and there is no input voltage, replace the Input module. 4. If the LED is not on when power is applied, check the fuse. 5. If the fuse is good, replace the Input module. Replacing a Defective Digital Board The procedure to replace a Digital board is outlined below: 1. Shut off control power. 2. Remove the old board from the machine and the new board from its packing and place both on an anti-static surface. 3. Remove any required chip(s) from the defective board and install them in the replacement board. 4. Check that all jumpers, dipswitches and components are properly setup on the new board as it was on the old board (refer to the Digital Settings tables near the end of this section). 5. Install the modified replacement board in the panel. Adding Digital Board 2 The procedure to add Digital Board 2 is outlined below: 1. Remove the new board from its packing and place it on an antistatic surface. 2. Make sure the board s dipswitch ID has been set properly. 3. Check that all jumpers and components are properly setup. 4. Shut off control power. 5. Install the new board in the panel. See the Control Center Assembly (refer to the QUANTUM DRAWINGS list for drawing number) for proper mounting location of the board. 6. To prevent possible noise problems from improper wiring: When routing wiring to the terminal strip, keep as much separation as possible between the Analog boards' wiring and the AC control wiring of the Digital I/O boards. DO NOT run any AC lines parallel to sensor lines!! All DC analog wiring enters the panel on the left, and all digital wiring enters on the right side of the panel. After replacing or installing a Digital Board and powering on the control panel, select [Detect I/O Boards] from the Change Communications screen in Panel Setup (this section appears later in this manual). This selection provides a method to detect all connected Digital and Analog boards. If a board has been removed, a communication error shutdown will be issued until this key is selected. The About screen will show what was detected.

16 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 16 DIGITAL I/O BOARD #1 PICTORIAL INPUT MODULE OUTPUT MODULE FUSE POSITION DETERMINES INPUT OR OUTPUT IN = INPUT OR UPPER LOCATION OUT = OUTPUT OR LOWER LOCATION +5 DC POWER IS OK I/O COMMUNICATIONS +RX / +TX -RX / -TX GND -12 VOLTS BOARD DC POWER +12 VOLTS +5 VOLTS INSTALLED FUSE POWER ON D29 AMP NOTE 1: 2 AMP LOAD NOTE 2: IF REQUIRED NOTE 3: PROGRAMMABLE SLIDE VALVE SETPOINT NOTE 4: ON RWB S NOTE 5: NOT REQUIRED WITH FULL LUBE OIL PUMP. NOTE 6: SAFE CLOSED NOTE 7: (OPTIONAL) AD 590 MTD ON BOARD NOTE 8: PROGRAMMBABLE OPEN OR CLOSED NOTE 9: JUMP 5 TO 25 IF NOT USED NOTE 10: PROGRAMMABLE SHUTDOWN OR ALARM NOTE 11: SETPOINT #2 WHEN CLOSED NOTE 12: ALTERNATE MODE WHEN CLOSED NOTE 13: ENERGIZE ON ALARM NOTE 14: DE-ENERGIZE ON SHUTDOWN NOTE 15: POWER ASSIST IS ADDED AT TIME OF MANUFACTURE IF SPECIFIED DIGITAL I/O BOARD #1 PART # 640D0062H01 REPLACEMENT PART # 640C0024G01 COMPR. START/RUN 1 COMPR. AUX HOT NEUTRAL OIL PUMP #1 1 START/RUN OIL PUMP #1 AUX SLIDE VALVE LOAD SLIDE VALVE UNLOAD HOT NEUTRAL SLIDE STOP INCREASE SLIDE STOP DECREASE LIQUID INJECTION 2 HI VI LIQUID INJECTION 2 HOT NEUTRAL ECONOMIZER 2,3 BALANCE PISTON 2,4 OIL LEVEL 5 HI LIQ. LEVEL FROM SYSTEM 6,9 HOT NEUTRAL ENCLOSURE HEATER 7 HOT GAS BYPASS 3 AUX. #1 10,6 AUX #2 10,6 HOT NEUTRAL PROCESS MODE SELECT 12 CAP. CONT. S.P. #2 OIL HEATER ALARM 13 HOT NEUTRAL SHUTDOWN 14 POWER ASSIST A P1 5A 5A 5A 5A P2 5A 5A 5A P3 5A 5A 5A 5A 5A 5A P4 5A 5A 5A 5A P5 5A 5A 5A P6 5A 5A 5A OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 OUTPUT MODULE INPUT MODULE OUTPUT MODULE INPUT MODULE OUTPUT MODULE OUTPUT MODULE OUTPUT MODULE OUTPUT MODULE OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL INPUT MODULE INPUT MODULE OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL INPUT MODULE OPTIONAL INPUT MODULE OPTIONAL INPUT MODULE OPTIONAL INPUT MODULE OPTIONAL OUTPUT MODULE OUTPUT MODULE OUTPUT MODULE OUTPUT MODULE OPTIONAL D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12 M13 M14 M15 M16 M17 M18 M19 M20 M21 M22 M23 M24 P8 MICROPROCESSOR WATCHDOG LAMP (BLINKS IF OK) OPEN DIPSWITCH SETTINGS SIGNIFY BOARD IDENTIFICATION NUMBER D28 1 DP1 I/O COMMUNICATION ACTIVITY LAMPS ACTIVE D25 D26 J5 U8 J10 J9 J8 J7 DIO PROGRAM VERSION COMMUNICATIONS JUMPERS TX RX P7 PROGRAM EPROM Frick * REVISION SERIAL # PART # 640D0062H BOARD REVISION LEVEL BOARD PART NUMBER FUSE TESTER SPARE FUSE 5A FUSE D27 1 AMP TEST FUSE HERE. IF LAMP LIGHTS FUSE IS OK SPARE FUSE

17 FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 17 DIGITAL I/O BOARD #2 PICTORIAL NOTE: OPTIONAL MODULES INSTALLED WITH PURCHASED OPTION INPUT MODULE OUTPUT MODULE INSTALLED FUSE READY TO RUN REMOTE ENABLE HOT NEUTRAL REMOTE RUN/START/STOP REMOTE LOAD 1 5A P1 5A 5A 5A OUT OUT OUT OUT FUSE POSITION DETERMINES INPUT OR OUTPUT IN = INPUT OR UPPER LOCATION OUT = OUTPUT OR LOWER LOCATION IN IN IN IN F1 F2 F3 F4 OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL INPUT MODULE OPTIONAL INPUT MODULE OPTIONAL POWER ON D29 +5 DC POWER IS OK M1 D1 D2 M2 D3 M3 D4 M4 I/O COMMUNICATIONS +RX / +TX -RX / -TX -12 VOLTS GND AMP BOARD DC POWER +12 VOLTS U8 +5 VOLTS 1 P7 DIO PROGRAM VERSION DIGITAL I/O BOARD #2 PART # 640D0062H01 REPLACEMENT PART # 640C0024G02 REMOTE UNLOAD CPR MOTOR ON RE-CYCLE DELAY HOT NEUTRAL SLIDE VALVE SETPOINT #1 SLIDE VALVE SETPOINT #2 AUX #3 PROGRAMMABLE SHUTDOWN OR ALARM AUX #4 PROGRAMMABLE SHUTDOWN OR ALARM HOT NEUTRAL AUX #5 PROGRAMMABLE SHUTDOWN OR ALARM AUX #6 PROGRAMMABLE SHUTDOWN OR ALARM AUX #7 PROGRAMMABLE SHUTDOWN OR ALARM AUX #8 PROGRAMMABLE SHUTDOWN OR ALARM HOT NEUTRAL OIL PUMP #2 STARTER OIL PUMP #2 AUX PERMISSIVE START MAIN OIL INJ DISCHARGE TEMP HOT NEUTRAL DX CIRCUIT #1 DX CIRCUIT #2 CONDENSER CONTROL #1 CONDENSER CONTROL #2 HOT NEUTRAL CONDENSER CONTROL #3 CONDENSER CONTROL # A P2 5A 5A 5A 1 P3 5A 5A 5A 5A OUT 5A OUT 5A P4 5A 5A 5A 5A P5 5A 5A 5A P6 5A 5A 5A OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN F5 F6 F7 F8 F9 F10 F11 F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 INPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL INPUT MODULE OPTIONAL INPUT MODULE OPTIONAL INPUT MODULE OPTIONAL INPUT MODULE OPTIONAL INPUT MODULE OPTIONAL INPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL INPUT MODULE OPTIONAL INPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL OUTPUT MODULE OPTIONAL D5 M5 D6 M6 D7 M7 D8 M8 D9 M9 D10 M10 D11 M11 D12 M12 M13 D13 D14 M14 D15 M15 D16 M16 D17 M17 D18 M18 D19 M19 D20 M20 D21 M21 D22 M22 D23 M23 D24 M24 P8 MICROPROCESSOR WATCHDOG LAMP (BLINKS IF OK) OPEN DIPSWITCH SETTINGS SIGNIFY BOARD IDENTIFICATION NUMBER D28 1 DP1 I/O COMMUNICATION ACTIVITY LAMPS ACTIVE D25 D26 J5 J10 J9 J8 J7 COMMUNICATIONS JUMPERS TX RX Frick * REVISION PROGRAM EPROM SERIAL # PART # 640D0062H BOARD REVISION LEVEL BOARD PART NUMBER FUSE TESTER SPARE FUSE 5A FUSE D27 1 AMP TEST FUSE HERE. IF LAMP LIGHTS FUSE IS OK SPARE FUSE

18 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 18 DIGITAL BOARD SETTINGS COMMUNICATIONS SETTINGS in J5 out* in J7 out* in J8 out* in J9 out* No pull-down. in J10 out* * = standard setting 120 ohm long communications line termination. No termination. RS-422/485 transmit pull-up for long communications lines. No pull-up. RS-422 transmit pull-up for long communications lines. No pull-up. RS-422/485 receive pull-down for long communications lines. RS-422 receive pull-down for long communications lines. No pull-down. DIPSWITCH SETTINGS SW1 SW2 SW3 SW4 SW5 SW6 Board #1 on on on on off on Board #2 off on on on off on Board #3 on off on on off on Board #4 off off on on off on Board #5 on on off on off on Board #6 off on off on off on Service Screen - Digital Board Inputs and Outputs The Service Screen has been provided to view the raw data from a Digital Board. There is a separate screen for each of the Digital Boards that are present. Digital values are shown as ON or OFF. To access the Service Screens from the Operating Status screen, press the [MENU] key, then the [MORE ] key, and finally the [SERVICE SCREEN] key.

19 FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 19 ANALOG BOARDS The information that follows in this section can help locate problems that can occur with Analog Input and Output circuit boards, and their interaction with the Quantum controller. Analog Board Description The Analog Board is actually a small microprocessor board and programmed to control analog outputs, or accepting inputs, from external electrical devices. Each Analog Board has the capability of 16 independent channels or I/O (Input/Output). With the Quantum Compressor Control, these I/O channels are dedicated, through the software and external wring, as to the function of each channel. Each channel that is used by the software will have to be configured for the type of device that is connected to it (4-20 ma, 0-5 v, 1-5 v or ICTD). The standard Quantum compressor control can have up to two Analog Boards (depending on options). Communications LED's The Quantum controller is in constant communication with all Analog (and Digital) Boards. You will notice on each Analog and Digital board, that there are a pair of LED's that are labeled as RX and TX. These letters represent Receive (RX) and Transmit (TX). These LED's should be flashing at a fairly high rate during normal operation. This indicates that the Quantum, and the board that you are looking at, are properly communicating with each other. Reference the JUMPER AND DIPSWITCH SETTINGS section later in this section. This section contains the dipswitch settings for addressing the Analog I/O Board numbers (1) through (6), although only the first two boards can be addressed. When these switches are properly set, the Quantum is able to serially communicate with each I/O board and provide control signals and data exchange. If these switches are not properly set, the result will be one of the following: Lost or failed communications (displayed in the Communications Status box on the Home screen) The wrong analog input signals being received The wrong analog output signals being sent from the board. Connections to the Quantum As stated earlier, the Quantum standard compressor control system utilizes up to two Digital, and two Analog Boards. To connect all of these boards together so that the Quantum can control them, they must be interconnected with a wiring harness that provides all of the necessary D.C. voltage requirements, as well as the communications capabilities. A diagram of this wiring harness can be found later in this manual (see the Power I/O Wiring Harness drawing). This harness has an 18 pin connector at one end, that plugs into the Quantum. Another connector plugs into the power supply. The remaining four connectors (16 pin) will plug into each of the Digital and Analog Boards in the system (up to four total). Upon close examination of this harness, you will notice that each of the connectors for both the Quantum and the four I/O boards, have two rows of connections. The wires that are inserted into the positions of one row, are internally daisychained on each I/O board, to continue the voltages and signals to the adjacent row. Therefore, any time that a connector is unplugged from the daisychain, these voltages and signals cannot continue through to the next board. Whenever a plug is not to be inserted onto a board, either for servicing, or if not all boards are present because of the options that are present, then a shunting plug (refer to the Recommended Spare Parts list) must be installed onto the open connector. The four wires that feed from the power supply to the Quantum provide all of the necessary D.C. voltage that is required (+5 Vdc, -12 Vdc, +12 Vdc, and Return or Common). The voltages are passed through the connector on the Quantum, and two new signals are generated by the Quantum to be passed on through the daisychain to the I/O boards. These two signals are the RX (receive) and TX (transmit). These signals are the means by which the Quantum communicates to the I/O. The Analog Boards require the +5 Vdc for logic, the -12 Vdc for internal voltage reference, and +12 Vdc for external sensors (plus or +) and the Return (common or -). The communications signals (RX & TX) are required by all boards. Logic Voltage (Power) LED Located on the Analog Board is a Power LED. This LED will be illuminated as long as the Control Power switch is ON, and the proper voltage is present at the Quantum power supply. The power supply generates the +5 Vdc voltage, and passes it on through the Power-I/O harness. This LED does not indicate however that the proper voltage is necessarily present at the board, only that the voltage is enough to energize the voltage sensing circuitry. If a voltage related problem is suspected with regard to an Analog Board, the only way to actually determine this is to read the voltage on a DVM. This may be accomplished by locating the white power/communications connector on the board. Notice that the Analog Board has only one of these connectors. The associated power/communications harness plugs in to it. Take the red (positive) probe of the DVM and carefully insert the end into the +5V lead, and the black (negative) probe end into the RET (Return or Common) lead, as shown below: +5V RET

20 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 20 Set the DVM to read DC, and set the proper range. The voltage reading must read a minimum of Vdc. The Power-I/O harness will have an associated voltage drop at each board connection. As an example, if you are reading the voltage at the first I/O board in the daisychain, and it reads 4.98 Vdc, you can be assured that the voltage at the subsequent connections for the remaining boards will be lower yet. The voltage will need to be corrected for proper operation of the system. The cause for a low voltage reading could be: The Quantum power supply may need adjustment (see the section on power supplies). The Power-I/O communications harness has a problem (a new harness may be needed). A problem may exist with one of the I/O boards (Digital or Analog). If the power LED is not lighted, check the cable for proper connectivity. Note: Each board provides the necessary connections to feed all signals to the following connectors. If the auxiliary Analog or Digital Board is not present then a jumper plug (Part # 640B0039H01) must be installed to daisychain the signals. Active LED The Analog Boards have an Active LED indicator on the board that blinks when the board s software is running. If the Active LED is not blinking, check to ensure that the EPROM is installed properly. The EPROM is located in chip slot U13, near the power connector. Analog Inputs An Analog Input is the portion of the hardware that allows devices such as temperature sensors and pressure transducers, to interface with the Quantum. The software program within the Quantum is constantly looking at these Input channels, via communications, and based upon what the voltage or current level of the channel is, will provide the necessary control for an associated action. For instance, if the digital input for the Oil Level Sensor is energized, and the Oil Separator Temperature sensor signal causes the value to drop below the setpoint, the Separator will determine that the Oil Heater needs to be energized. (Digital Inputs are discussed in the Digital Input section). Analog inputs arrive at the board on connectors P1 through P8. Each of these connectors can receive two channels (for a total of sixteen). Each of the sixteen analog input channels is board configurable to select for the following input signals: 4-20 ma 0-5 volt 1-5 volt ICTD Refer to the Analog Board drawings and Analog Board Settings pages that appear later in this section for specific information and locations of jumpers. Also, see the section entitled Checking the Analog Inputs and Outputs. Analog Outputs An Analog Output is the portion of the hardware that the Quantum uses to provide control. With the Quantum, this output is typically a 4-20 ma signal that is outputted to an external device. This device is usually a customer specific application. Perhaps they are looking to simply receive a signal back from the Quantum telling then the Slide Valve Position, as an example. Checking the Analog Inputs and Outputs Some problems that are encountered involve troubleshooting the Analog inputs and outputs. The Analog I/O (Input / Output) Boards have eight Analog I/O (DIO) board connectors labeled P1 through P8. The external Analog devices are wired to a DIO connector plug. Position 1 connects to the plus (+) of the external device for channel 1, position 2 connects to the signal (SIG) of the external device for channel 1 and position 3 connects to ground (GND) of the external device for channel 1. Position 4 connects to the plus (+) of the external device for channel 2, position 5 connects to the signal (SIG) of the external device for channel 2 and position 6 connects to ground (GND) of the external device for channel 2, as shown below: Channel 1 + Channel 1 Signal The Analog I/O Boards have numerous jumpers that must be properly selected. There are sixteen analog input channels that can be selected for 4-20 ma, 0-5 Vdc, or ICTD. Channel #16 will also take the 0-5 Amp motor CT as an input. All of these jumper settings are listed later in this section (Analog Board Settings section). Besides properly setting the hardware jumpers, each channel is setup in software for the proper transducer type and range, and each transducer must be calibrated through the appropriate sensor calibration screen. Improper setup of either the hardware or software will result in improper operation or range. The most common fault associated with the reading of the analog channels other than hardware or software setup problems fall into one of the following categories: Sensor fault Wiring problem Channel 2 + GND Improper grounding of system. Channel 2 Signal GND An open wire, shorted wire, or faulty sensor will usually give a reading at either the minimum or maximum end of the range scale. An erratic reading or a reading that seems to float up and down is usually indicative of a grounding problem. When a single transducer or cable is shorted to earth (or system) ground, this can show up as a whole assortment of problem channels. The easiest way

21 FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 21 to find a short to earth problem is to disconnect all the sensor plugs and ohm out each plug screw terminal to earth for open (infinite) impedance. All sensors should read open to earth with the exception of the CT motor current channel. One side of the CT is grounded in the Motor Control Center (MCC). (The third pin on pressure sensors is ground.) Replacing a Defective Analog Board The procedure to replace an Analog board is outlined below: 1. Shut off control power. 2. Remove the old board from the machine and the new board from its packing and place both on an anti-static surface. 3. Remove any required chip(s) from the defective board and install them in the replacement board. 4. Check that all jumpers, dipswitches and components are properly setup on the new board as it was on the old board. 5. Install the modified replacement board in the panel. Adding Analog Board 2 The procedure to add Analog Board 2 is outlined below: 1. Remove the new board from its packing and place it on an antistatic surface. 2. Make sure the board s dipswitch ID has been set properly. 3. Check that all jumpers and components are setup properly (refer to the Analog Settings tables at the end of this section). 4. Shut off control power. 5. Install the new board in the panel. See the Control Center Assembly (refer to the QUANTUM DRAWINGS list for drawing number) for proper mounting location of the board. 6. To prevent possible noise problems from improper wiring: When routing wiring to the terminal strip, keep as much separation as possible between the Analog boards wiring and the AC control wiring of the Digital I/O boards. DO NOT run any AC lines parallel to sensor lines!! All DC analog wiring is to enter the panel on the left side. All AC digital wiring is to enter on the right side of the panel. After replacing or installing an Analog Board and powering on the control panel, select [Detect I/O Boards] from the Change Communications screen in Panel Setup (this section appears later in this manual). This selection provides a method to detect all connected Analog and Digital boards. If a board has been removed, a communication error shutdown will be issued until this key is selected. The About screen will show what was detected.

22 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 22 ANALOG BOARD #1 +5 VOLTS BOARD DC POWER +12 VOLTS -12 VOLTS GND I/O COMMUNICATIONS -RX / -TX +RX / +TX ANALOG OUTPUT JUMPERS SUCTION TEMP. DISCHARGE TEMP. OIL TEMP. SEPARATOR TEMP. LEAVING PROCESS TEMP. OIL PRESSURE FILTER PRESSURE DISCHARGE PRESSURE SUCTION PRESSURE BALANCE PISTON REG IF REQUIRED SYSTEM DISCHARGE REMOTE CONTROL SETPOINT REMOTE 4-20 MA SLIDE VALVE POSITION SLIDE VALVE SLIDE STOP MOTOR AMPS + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - 1 P1 6 1 P2 6 1 P3 6 1 P4 6 1 P5 6 1 P6 6 1 P7 6 1 P8 6 ANALOG INPUT CHANNELS J J J3 J J J J J J9 J J J J J J19 J20 J21 J22 J13 J15 J17 J18 REVISION PART # 640D0063H01 POWER ON Frick * SERIAL # BOARD PART NUMBER D16 BOARD REVISION LEVEL AMP VDC POWER IS OK MICROPROCESSOR WATCHDOG LAMP (BLINKS IF OK) U15 D15 DIGITAL TO ANALOG CONVERTER AD75004 OPEN "ACTIVE" U13 P9 1 PROGRAM EPROM AIO PROGRAM VERSION 1 DIPSWITCH SETTINGS SIGNIFY BOARD IDENTIFICATION NUMBER J J J D14 D13 U MA DRIVER J29 U6 U7 TX RX J33 J34 J U4 ANALOG CH #4 AD649JN J35 J36 ANALOG CH #3 AD649JN ANALOG CH #2 AD649JN ANALOG CH #1 AD649JN 8 P10 1 J23 J24 J25 J26 I/O COMMUNICATION COMMUNICATIONS JUMPERS PIN 8 = REMOTE CONTROL SETPOINT PIN 7 = GND PIN 6 = PROGRAMMABLE OUTPUT PIN 5 = GND PIN 4 = PID / PROGRAMMABLE OUTPUT PIN 3 = GND PIN 2 = PID / PROGRAMMABLE OUTPUT PIN 1 = GND ANALOG OUTPUT JUMPERS AND INTEGRATED CHIPS ANALOG BOARD #1 PART # 640D0063H01 REPLACEMENT PART # 640C0026G01

23 FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 23 ANALOG BOARD #2 +5 VOLTS BOARD DC POWER +12 VOLTS -12 VOLTS GND I/O COMMUNICATIONS -RX / -TX +RX / +TX ANALOG OUTPUT JUMPERS FUTURE PID #1 FUTURE PID #2 FUTURE PID #3 ENTERING PROCESS TEMPERATURE TEMP. / PRESSURE MONITORING AUXILIARY ANALOG #1 TEMP. / PRESSURE MONITORING AUXILIARY ANALOG #2 TEMP. / PRESSURE MONITORING AUXILIARY ANALOG #3 TEMP. / PRESSURE MONITORING AUXILIARY ANALOG #4 TEMP. / PRESSURE MONITORING AUXILIARY ANALOG #5 TEMP. / PRESSURE MONITORING AUXILIARY ANALOG #6 TEMP. / PRESSURE MONITORING AUXILIARY ANALOG #7 TEMP. / PRESSURE MONITORING AUXILIARY ANALOG #8 TEMP. / PRESSURE MONITORING AUXILIARY ANALOG #9 SIDE LOAD / ECONOMIZER MAIN OIL INJECTION (USED ONLY ON VERTICAL UNITS WITH LIQUID INJECTION) KW MONITORING + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - + S - 1 P1 6 1 P2 6 1 P3 6 1 P4 6 1 P5 6 1 P6 6 1 P7 6 1 P8 6 ANALOG INPUT CHANNELS J J J J J J J J J9 J J J J J J19 J20 J21 J22 J13 J15 J17 J18 REVISION PART # 640D0063H01 POWER ON Frick * SERIAL # BOARD PART NUMBER D16 BOARD REVISION LEVEL AMP VDC POWER IS OK MICROPROCESSOR WATCHDOG LAMP (BLINKS IF OK) U15 D15 DIGITAL TO ANALOG CONVERTER AD75004 OPEN "ACTIVE" U13 P9 1 PROGRAM EPROM AIO PROGRAM VERSION 1 DIPSWITCH SETTINGS SIGNIFY BOARD IDENTIFICATION NUMBER J J J D14 D13 U MA DRIVER J29 U6 U7 TX RX J33 J34 J U4 ANALOG CH #4 AD649JN J35 J36 ANALOG CH #3 AD649JN ANALOG CH #2 AD649JN ANALOG CH #1 AD649JN 8 P10 1 J23 J24 J25 J26 I/O COMMUNICATION COMMUNICATIONS JUMPERS PIN 8 = CONDENSER OUTPUT PIN 7 = GND PIN 6 = VARIABLE SPEED OUTPUT PIN 5 = GND PIN 4 = PID / PROGRAMMABLE OUTPUT PIN 3 = GND PIN 2 = PID / PROGRAMMABLE OUTPUT PIN 1 = GND ANALOG OUTPUT JUMPERS AND INTEGRATED CHIPS ANALOG BOARD #2 PART # 640D0063H01 REPLACEMENT PART # 640C0026G02

24 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 24 ANALOG BOARD SETTINGS COMMUNICATIONS SETTINGS in J33 out* in J34 out* in J35 out* in J36 out* in J37 out* * standard setting DIPSWITCH SETTINGS RS-422/485 receive pull-down for long communications lines. No pull-down RS-422/485 transmit pull-up for long communications lines. No pull-up. RS-422 receive pull-down for long communications lines. No pull-down. RS-422 transmit pull-up for long communications lines. No pull-up. 120 ohm long communications line termination. No termination. SW1 SW2 SW3 SW4 SW5 Board #1 On On On On Off Board #2 Off On On On Off Board #3 On Off On On Off Board #4 Off Off On On Off Board #5 On On Off On Off Board #6 Off On Off On Off ANALOG BOARD #1 INPUT JUMPERS Input Channel #1 - Suction Temperature J1 out * 0-5 volt Input 4-20 ma Input ICTD Input Input Channel #2 - Discharge Temperature J2 out * 0-5 volt Input 4-20 ma Input ICTD Input Input Channel #3 - Oil Temperature J3 out * 0-5 volt Input 4-20 ma Input ICTD Input Input Channel #4 - Oil Separator Temperature J4 out * 0-5 volt Input 4-20 ma Input ICTD Input Input Channel #5 - Leaving Process Temperature** J5 out * 0-5 volt Input 4-20 ma Input ICTD Input Input Channel #6 - Oil Pressure J6 out* volt Input 4-20 ma Input ICTD Input Input Channel #7 - Oil Filter Pressure** J7 out* volt Input 4-20 ma Input ICTD Input Input Channel #8 - Discharge Pressure J8 out* volt Input 4-20 ma Input ICTD Input Input Channel #9 - Suction Pressure J9 out* volt Input 4-20 ma Input ICTD Input Input Channel #10 - Balance Piston Pressure** J10 out* volt Input 4-20 ma Input ICTD Input Input Channel #11 - System Discharge Pressure** J11 out* volt Input 4-20 ma Input ICTD Input Input Channel #12 - Remote Capacity Control Setpoint** J12 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #13 - Remote Slide Valve Position** J13 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #14 - Slide Valve** (linear transmitter) in All other Input types (0-5 volt, 4-20 ma, J14 ICTD) out* Slide valve potentiometer Input. J15 out* volt Input 4-20 ma Input ICTD Input J16 in out* All other Input types (0-5 volt, 4-20 ma, ICTD) Slide valve potentiometer Input. Input Channel #15 - Slide Stop** in All other Input types (0-5 volt, 4-20 ma, J17 ICTD) out* Slide stop potentiometer Input. J18 out* volt Input 4-20 ma Input ICTD Input J19 in out* All other Input types (0-5 volt, 4-20 ma, ICTD) Slide valve potentiometer Input. Input Channel #16 - Motor Amps J20 J21 J amp CT Input* out out in 0-5 volt Input out out out 4-20 ma Input in out out ICTD Input out in out * standard setting ** = If applicable = RWF compressor standard setting

25 FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 25 ANALOG BOARD #1 OUTPUT JUMPERS Output Channel #1 - PID / Programmable J ma Output ma Output J ma Output ma Output IC s install U15 & U7 Connect to P10 terms 1 & 2 Output Channel #2 - PID / Programmable J ma Output ma Output J ma Output ma Output IC s install U15 & U6 Connect to P10 terms 3 & 4 Output Channel #3 - Programmable J ma Output 2-3* 4-20 ma Output J41 1-2* 4-20 ma Output ma Output IC s install U15 & U5 Connect to P10 terms 5 & 6 Output Channel #4 Remote Control Setpoint** J ma Output 2-3* 4-20 ma Output J42 1-2* ma Output 0-20 ma Output IC s install U15 & U4 Connect to P10 terms 7 & 8 * = Standard Setting ** = If applicable Note: IC s must also be installed in order to enable the analog output options. U15 along with at least one IC (U4,U5,U6 or U7) installed will enable the channel. ANALOG BOARD #2 INPUT JUMPERS Input Channel #1 - Future J1 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #2 - Future J2 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #3 Manifold Pressure Eng. Drive J3 out* volt Input 4-20 ma Input ICTD Input Input Channel #4 - Entering Process Temperature** J4 out * 0-5 volt Input 4-20 ma Input ICTD Input Input Channel #5 - Temp.\Pressure Monitoring Aux. #1** J5 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #6 - Temp.\Pressure Monitoring Aux. #2** J6 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #7 - Temp.\Pressure Monitoring Aux. #3** J7 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #8 - Temp.\Pressure Monitoring Aux. #4** J8 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #9 - Temp.\Pressure Monitoring Aux. #5** J9 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #10 - Temp.\Pressure Monitoring Aux. #6** J10 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #11 - Temp.\Pressure Monitoring Aux. #7** J11 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #12 - Temp.\Pressure Monitoring Aux. #8** J12 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #13 - Temp.\Pressure Monitoring Aux. #9** J13 out 1-2* volt Input 4-20 ma Input ICTD Input Input Channel #14 - Temp\Pressure Monitoring Aux. #10** Default -Side Load \ Economizer** in* All other Input types (0-5 volt, 4-20 ma, J14 ICTD) out Slide valve potentiometer Input. J15 out* volt Input 4-20 ma Input ICTD Input J16 in* All other Input types (0-5 volt, 4-20 ma, ICTD) out Slide valve potentiometer Input. Input Channel #15 Main Oil Injection ** in* All other input types (0-5 volt, 4-20 ma, J17 ICTD) out Slide valve potentiometer input. J18 out* volt input (standard setting) 4-20 ma Input ICTD input J19 in* out All other input types (0-5 volt, 4-20 ma, ICTD) Slide valve potentiometer input. Input Channel #16 - Kw Monitoring** J20 J21 J amp CT input out out in 0-5 volt input out out out 4-20 ma input* in out out ICTD input out In out * standard setting ** = If applicable

26 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 26 ANALOG BOARD #2 OUTPUT JUMPERS Output Channel #1 PID / Programmable J ma Output 4-20 ma Output J ma Output 0-20 ma Output IC s install U15 & U7 Connect to P10 terms 1 & 2 Output Channel #2 - PID / Programmable J ma Output 4-20 ma Output J ma Output 0-20 ma Output IC s Install U15 & U6 Connect to P10 terms 3 & 4 Output Channel #3 Variable Speed Motor Drive J * 0-20 ma Output 4-20 ma Output J41 1-2* ma output 0-20 ma output IC s install U15 & U5 Connect to P10 terminals 5 & 6 Output Channel #4 - Condenser** J * 0-20 ma Output 4-20 ma Output J42 1-2* ma Output 0-20 ma Output IC s Install U15 & U4 Connect to P10 terminals 7 & 8 * = Standard Setting ** = If applicable Note: IC s must also be installed in order to enable the analog output options. U15 along with at least one IC (U4, U5, U6, or U7) installed will enable the channel. Service Screen - Analog Board Inputs and Outputs The Service Screen has been provided to view the raw data from an Analog Board. There is a separate screen for each of the Analog Boards that are present. Analog values are converted from binary to show volts. The error factor is ±.05 volts. To access the Service Screens from the Operating Status screen, press the [MENU] key, then the [MORE ] key, and finally the [SERVICE SCREEN] key.

27 FRICK QUANTUM COMPRESSOR CONTROL PANEL S M Page 27 ADDITIONAL SERVICE RELATED SCREENS About Screen The About screen shows the Analog and Digital boards that have been detected. If a board has lost communications, a shutdown will be issued. All outputs are turned off on a Digital Board that has lost communications. All inputs will get set to their minimum value range on an Analog Board that has lost communications. A loss of communications to an analog board will probably result in sensor fault shutdown Change Communications Screen messages that are associated with the sensors on that board. If the RX LED on the I/O board is blinking but the board was not detected on the About screen, or an I/O Comm failure occurs, check the address of the board. To access the About screen from the Operating Status screen, press the [MENU] key, then the [ABOUT ] key. This screen is shown here to indicate where the Detect I/O Boards key is located. This selection provides a method to detect all connected Analog and Digital boards. If a board has been removed, a communication error shutdown will be issued until this key is selected. You may view the About screen to see what has been detected. To access the Change Communications screen from the Operating Status screen, press the [MENU] key, then the [Panel Setup] key, the [Change Comms] key.

28 S M FRICK QUANTUM COMPRESSOR CONTROL PANEL Page 28 Scheduled Maintenance SCREEN This screen has been provided to help the service technician and can be accessed from the service screen. From here, the service technician can view up to fifteen (15) user definable maintenance schedules. Each of the schedules may be custom named. This screen is based upon the Maintenance Schedule that is provided in the IOM manual for the specific compressor package. Refer to S O (Operation Manual) for additional information about this screen.