CONTROL MICROSYSTEMS Differential Analog Input Module. Hardware Manual

Transcription

1 550 Differential Analog Input Hardware Manual CONTROL MICROSYSTEMS SCADA products... for the distance Steacie Drive Telephone: Kanata, Ontario Facsimile: KK A9 Technical Support: Canada -CONTROL

2 550 Differential Analog Input Hardware Manual Control Microsystems Inc. All rights reserved. Printed in Canada. Trademarks TeleSAFE, TelePACE, SmartWIRE, SCADAPack, TeleSAFE Micro6 and TeleBUS are registered trademarks of Control Microsystems Inc. All other product names are copyright and registered trademarks or trade names of their respective owners. Material used in the User and Reference manual section titled SCADAServer OLE Automation Reference is distributed under license from the OPC Foundation. 550 Differential Analog Input Hardware Manual October 9, 007

3 Table of Contents OVERVIEW... 3 IMPORTANT SAFETY INFORMATION... 3 INSTALLATION Field Wiring Address Selection Voltage or Current Range Selection AC Rejection Selection... 7 OPERATION AND MAINTENANCE.... Data Format.... Maintenance....3 Troubleshooting Fuses.... Calibration... 5 SPECIFICATIONS APPROVALS AND CERTIFICATIONS... Index of Figures Figure : Typical 550 Field Wiring... 5 Figure : 550 Differential Analog Input Address Switches Differential Analog Input Hardware Manual October 9, 007

4 Overview The Model 550 Differential Analog input module adds eight Differential analog inputs to the 5000 Series input/output system. Up to sixteen model 550 modules may be connected to the I/O bus, for a total of analog inputs per bus. The 550 module can be used to measure ±0V analog signals and 0-0mA analog signals. The 550 module uses a 3 bit plus sign analog to digital converter (ADC). A single chip microcontroller with integral watchdog timer operates the module and communicates over the I/O bus. All inputs are fuse and transient protected and optically isolated from the main logic power and the other analog inputs. 550 Differential Analog Input Hardware Manual October 9, 007 3

5 Important Safety Information Power, input and output (i/o) wiring must be in accordance with Class I, Division wiring methods Article 50- (b) of the National Electrical Code, NFPA 70 for installations in the U.S., or as specified in Section -J of the Canadian Electrical Code for installations within Canada and in accordance with the authority having jurisdiction. WARNING! EXPLOSION HAZARD - SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS, DIVISION. WARNING! EXPLOSION HAZARD WHEN IN HAZARDOUS LOCATIONS, TURN OFF POWER BEFORE REPLACING OR WIRING MODULES. WARNING! EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE NONHAZARDOUS. 550 Differential Analog Input Hardware Manual October 9, 007

6 3 Installation The installation of the 550 module requires mounting the module on the 7.5mm by 35mm DIN rail and connecting the module to the system I/O Bus. Refer to the System Configuration Guide, at the beginning of this manual, for complete information on system layout, I/O Bus cable routing and module installation. 3. Field Wiring The 550 module provides eight Differential analog inputs. Figure : Typical 550 Field Wiring shows how to wire the inputs. Screw termination style connectors are used for termination of field wiring. They accommodate solid or stranded wires from to AWG. The connectors are removable. This allows module replacement without disturbing the field wiring. Leave enough slack in the wiring for the connector to be removed. CAUTION: To remove the connector: Remove power before servicing unit. Pull the connector upward from the board. Apply even pressure to both ends of the connector. To install the connector: Line up the pins on the module with the holes in the connector. Make sure all the pins line up properly. Push the connector onto the pins. Apply even pressure to both ends on the connector. P3 P Figure : Typical 550 Field Wiring 550 Differential Analog Input Hardware Manual October 9, 007 5

7 3. Address Selection The 5000 Series I/O bus will support a maximum of forty I/O (input/output) modules Series I/O module types may be combined in any manner to the maximum supported by the controller used. The types of input and output modules available are: Digital Input modules Digital Output modules Analog Input modules Analog Output modules Counter Input modules Each type of I/O module, connected to the I/O bus, must have a unique I/O module address. Different types of I/O modules may have the same module address. The address range supported by the SmartWIRE, SCADAPack or TeleSAFE Micro6 controller module may restrict the I/O module address range. Refer to the controller manual for the maximum address supported. The three address switches in the dip switch package SW labeled,, and set the module address. To set the address: Open all four switches by sliding the actuators to the left side of the switch. Close the switches by sliding the actuators to the right such that they total the desired address. Figure : 550 Differential Analog Input Address Switches shows the switch setting for all 6 possible module addresses How to Set Switches Determine the module address. Slide the actuator of the switch to the side shown in gray above. Slide to this side to ignore switch value Slide to this side to add switch value Figure : 550 Differential Analog Input Address Switches 550 Differential Analog Input Hardware Manual October 9, 007 6

8 3.3 Voltage or Current Range Selection The 550 module measures voltages in the range of 0V to +0V with respect to the ve input of the measuring channel. Currents in the range of -0mA to +0mA can be measured by on any of the inputs by inserting an onboard 50Ω resistor in current loop. The resulting voltage input will be 5V to +5V. This resistor is added by closing the appropriate switch labeled 0 through 7 in the dip switch package SW. Close the switch by sliding the actuator up to the ON position. 3. AC Rejection Selection The 550 module samples the analog inputs several times for optimum rejection of AC noise. 60 Hz. AC rejection is obtained when the actuator for the switch labeled 50/60 is in the left position. 50 Hz. AC rejection is obtained when the actuator for the switch labeled 50/60 is in the right position. 550 Differential Analog Input Hardware Manual October 9, 007 7

9 Operation and Maintenance. Data Format 5000 Series analog input and output modules use 6 bit signed numbers (5 bits plus sign). The readings are to provide output data in the 6 bit signed format. The table below shows output values for several voltages and currents.. Maintenance Input Condition Output +9.99V Voltage V Voltage 63.mV Voltage 0V Voltage 0 5V Voltage 63 0V Voltage 376 0mA Current 63.µA Current 0mA Current 0 0mA Current 63 This module requires no routine maintenance. If the module is not functioning correctly, contact Control Microsystems Technical Support for more information and instructions for returning the module for repair..3 Troubleshooting Problem Inputs always read near 0. Input voltages read slightly low. Reading is constant. Action Check and if necessary replace the input fuse. Check SW and ensure the switch is in the voltage position. Check that the analog input is not forced..3. Fuses Each input is protected with a /A fuse. This fuse will blow when the input voltage exceeds approximately V. The fuse is Littelfuse NANO-SMF /A Fast-Acting fuse. Replacement fuses are available from Control Microsystems. Control Microsystems part number: 0006 Littelfuse part number: R5.5. Calibration The 550 module is calibrated and burned in at the factory. It does not require periodic calibration. Calibration may be necessary if the module has been repaired as a result of damage. There is one potentiometer for calibration of the analog inputs. The GAIN potentiometer (R) adjusts the gain. 550 Differential Analog Input Hardware Manual October 9, 007

10 Calibration requires that you read the converted value from the module using a communication controller, SCADAPack or TeleSAFE Micro6 controller module. Refer to the controller module manual for details. To calibrate the module:. Select an input and ensure the associated switch in the dipswitch package SW is OFF.. Short the selected analog input. 3. Adjust the ZERO potentiometer (R0) until a reading of 0 is obtained.. Apply a stable voltage between 9 and 0 Volts on the selected analog input. 5. Calculate the correct reading for the applied voltage using the formula: reading =(376 X voltage/0) 6. Adjust the GAIN potentiometer (R9) until the correct reading is obtained. The calibration may be verified by applying other voltages or voltages of the opposite polarity to the other input terminals. Use the formula above to determine the correct reading for each input voltage. 550 Differential Analog Input Hardware Manual October 9, 007 9

11 5 Specifications Disclaimer: Control Microsystems reserves the right to change product specifications without notice. For more information visit Inputs voltage or current inputs Each input is switch selectable as voltage or current. Ranges Voltage 0V to +0V Current 0mA to +0mA Resolution Voltage.mV Current.µA Input Resistance Converter type Accuracy Isolation Common mode rejection Normal mode rejection Transient Protection Over-scale Input Capacity Input fuses Reading Update Time Power Requirements Terminations Dimensions Mounting Packaging Environment Voltage >0MΩ Current 50Ω 3 bit plus sign successive approximation +/ 0.% of full scale at 5 o C (77ºF) +/ 0.% of full scale over temperature range 550 VAC from any input to the chassis or the system power supplies 0Vac/00Vdc between inputs >96dB at 50/60 Hz. >50dB at 0KHz. with K ohm imbalance. >50dB at KHz. with 0K ohm imbalance. >5dB at 50/60 Hz. Transient suppressors and fuses on each input..5kv surge withstand capability (SWC) as per ANSI/IEEE C Vdc maximum. Exceeding V will cause the fuse to blow. / Amp. 70ms with 60 Hz. rejection selected. 5ms with 50 Hz. rejection selected. 5V at 00mA two pole removable terminal blocks to AWG 5 amp contacts.7 inch (06 mm) wide.65 inch ( mm) high.75 inch ( mm) deep 7.5 x 35 DIN rail corrosion resistant zinc plated steel with black enamel paint 5% RH to 95% RH, non-condensing 0 o C to 60 o C 0 o F to 0 o F 550 Differential Analog Input Hardware Manual October 9, 007 0

12 6 Approvals and Certifications Safety Non-Incendive Electrical Equipment for Use in Class I, Division Groups A, B, C and D Hazardous Locations. 550 Differential Analog Input Hardware Manual October 9, 007