EASON TECHNOLOGY. IO8 & IO24 Break-Out Module

Transcription

1 EASON TECHNOLOGY IO8 & IO24 Break-Out Module p/n Revision1.2 Eason Technology, Inc Cameron Dr. Bldg 300 Windsor, CA Phone (707) FAX (707) Copyright 2000, Eason Technology, Inc. Eason Technology, Inc. All rights reserved. Specifications subject to change without notice.

2 Table of Contents INTRODUCTION 3 UNPACKING AND INSPECTION 3 HOOKUP INSTRUCTIONS 4 LOCATION AND IDENTIFICATION OF CONNECTORS 4 I/O CONNECTOR 4 CONNECTION TO 2000 SERIES PRODUCTS 5 PIN-OUTS FOR MODEL 2750, 2550, PC104-05, MODEL PIN 6 DESCRIPTION 6 PIN 6 DESCRIPTION 6 EASON 2000 SERIES INTERFACING 7 WIRING INPUTS TO THE 2000 SERIES: 7 WIRING OUTPUTS TO THE 2000 SERIES: 8 OPTO ISOLATION INTERFACE 8 OPTO ISOLATION INTERFACE 9 UNDERSTANDING THE 2000 FAMILY S I/O 10 PULL-UP PIN INPUTS 11 OUTPUTS 11 MAGNETIC ISOLATION 11 SPECIFICATIONS: 12 APPENDIX B - WARRANTY INFORMATION 13 2.

3 Introduction The Eason IO24 Break-Out Module is designed to provide an additional level of protection for Eason 2000 Family Intelligent Operator Interfaces. The use of this module is required when using the I/O on these Operator Interfaces. The Eason 2000 family products have a unique interface that allows any line to be an input or an output. This configuration is performed by WinBuild 2000 s Driver Configuration controls. It is possible to inadvertently designate an input as an output and then connect it directly to 24V power. If the output is ever turned on under software control, a direct connection will be made between power and ground, causing very high amounts of current to flow. The IO24 limits this current flow, thereby protecting the I/O from damage. The IO24 has on-board circuit breakers to protect the Operator Interface from inadvertent connections to the power supply. These circuit breakers will trip if the current rises to 250mA under a short circuit condition. This is twice the rated current condition of 125mA continuous. If your application has incandescent lamps, which have a high turn-on current requirement, as long as their continuous current requirement is less than 125mA, the circuit breakers will not trip. Should a circuit breaker trip, resetting it is as simple as removing the source of the short circuit and cycling the power applied to the IO24 and the Eason 2000 Family product. WARNING! The IO24 is designed to operate with 24V DC applied to the pin labeled +24VDC and power ground connected the pin labeled. Some point in your system must have the 24VDC ground tied to earth ground. IO VDC 24 VDC SUPPLY +24 VDC EARTH GROUND Unpacking and Inspection Compare the contents of the container, which the packing list which is attached to the exterior of the shipping container. Your package should include the following: 1. IO24 Break Out Module Pin Ribbon Cable (or custom ordered cable) 3. This Manual 3.

4 HOOKUP INSTRUCTIONS Location and Identification of Connectors POWER GOOD V RIBBON CONNECTTOR SCREW TERMINAL I/O Connector The IO24 is a protection interface for the Eason 2000 Family Products. The Model 2750, 2550, and PC require the use of the IO24 when direct connection to 24V digital I/O is needed. The diagram above indicates the pin-out for the IO24. On the left is the position for a ribbon cable connection to the Model 2550, 2750 or the PC On the right, are the screw terminal connections for the physical I/O points. Note that the pin layout is staggered, and every fourth I/O point is a ground connection. A separate ground and 24VDC power connection is provided and MUST be connected during operation. In the center, 24 LED s indicate the status of the I/0, and one LED indicates the presence of 24V power. 4.

5 Connection To 2000 Series Products The following diagram shows the IO24 connected to an Eason Model The 50 pin ribbon cable is used to directly connect the 2550 s internal I/O to the IO24. Pin-Outs for Model 2750, 2550, PC104-05, Model 4000 The following connections describe the pin-outs for inputs and outputs on the 50 pin ribbon PIN 49 NOTCH PIN 1 PIN 50 REAR VIEW OF I/O CONNECTOR PIN 2 5.

6 PIN DESCRIPTION PIN DESCRIPTION 49 Pull-up (see next 23 I/O 12 section) 47 I/O 0 21 I/O I/O 1 19 I/O I/O 2 17 I/O I/O 3 15 I/O I/O 4 13 I/O I/O 5 11 I/O I/O 6 9 I/O I/O 7 7 I/O I/O 8 5 I/O I/O 9 3 I/O I/O 10 1 I/O I/O 11 EVEN PINS GROUND I/O PIN-OUT 6.

7 Eason 2000 Series Interfacing Wiring Inputs to the 2000 Series: Switches and NPN outputs are acceptable INPUT devices. They are to be wired as follows: -Pin49 Eason 2000 Family Interface Eason 2000 Family Interface SINKING PLC OUTPUTS are acceptable INPUT devices. They are to be wired as follows: Eason 2000 Family Interface Connecting a PLC Output to the IO-24 Module 7.

8 Wiring Outputs to the 2000 Series: Pilot lights and small relays are acceptable OUTPUT devices. They must be limited to less than 125mA for the voltage they are being used at. They are to be wired as shown to the left. I = V/R L Where I 125mA Eason 2000 Family Interface Sourcing PLC Inputs make an acceptable OUTPUT device for the IO-24 Module. They are to be wired as shown to the left. Eason 2000 Family Interface 8. Connecting a PLC In

9 Opto Isolation Interface When connecting to devices, which operate at higher voltages than 24V, or require higher current or sink/source capability, you are required to utilize an opto-isolation relay board. These boards are available from many sources: Grayhill, OPTO-22, Gordos, and many more. They come in different voltage and current ranges depending upon the application. The photo at left shows a 24-channel opto-isolation board with the modular opto-isolation relays installed. It is possible for the 2000 Family to interface directly with either the low-voltage (5V) opto-isolators or the 24V-opto isolators. When using the either-voltage type, connect a 5V or 24V supply to the power connection on the opto-isolation board (choose the supply depending upon which type of isolator board you are using). Pin 49 connects this voltage to the pull-up pin and the 2000 Family will sense the I/O trip points necessary to work with this logic level. It is important to note that the 5V output on the pull-up pin cannot drive a fully populated rack of opto-isolation relays. This output is current limited to 1A, but due to the fact that one 28 gauge conductor of the ribbon cable makes the connection to this pin (PULLUP Pin 49), the voltage drop losses will be too extreme to allow the opto-isolation relay board to work properly. Please provide an external 5V or 24V power supply to power the opto-isolation relays. 9.

10 Understanding the 2000 Family s I/O To best understand the I/O, let s take a look at the inner workings of one of the I/O points. In the circuit diagram below, you will see three basic components: U1 the input compurgator, U2 & Q1 the output driver, and D1,R2 and R3 the pull-up circuitry. Pull-up Pin 49 Let s start with a description of how the pull-up works. If you plan to use the inputs or outputs for any logic voltage other than 5V, connect your external power supply to pin 49. This will create the proper pull-up voltage on the input pull-up resistor R1. It will also create a voltage of ½ of the pull-up voltage at VREF. This is used to reference the input circuits so they will switch at ½ of the pull-up voltage. A semiconductor fuse (not shown) is provided on the pull-up pin to protect from accidental shorts to ground. As you can see if the pin is shorted to ground, current will flow through the diode D1 and destroy it. This fuse will trip at approximately 1A. To reset the fuse, you must remove the short, turn the unit off and wait 1 to 2 minutes for the fuse to cool before re-applying power 10.

11 Inputs When the I/O pin is used as input, the inputs are in essence a SOURCING input. This means that means that to use the input you must SINK current to ground. In simple terms, just connect the pin to ground and you will change the state of the input. When you make a connection between the I/O pin and ground, you drop the voltage on the + input of U1B from the pull-up voltage to 0V. As this voltage passes through ½ of the pull-up voltage on its way to ground, U1B will sense that it has changed and inform the CPU. The reverse happens when you remove the short to ground. This type of input works only with switches, NPN type transducers, and dry contact relays. It is especially well suited for switches that make a simple contact to ground, or opto-isolation relays which make an NPN contact (this is the normal type for PB24 relay boards). Outputs Using the I/O as an output, the outputs are in essence SINKING outputs. This means that the to use the output you must SOURCE current from a power source so the I/O point can SINK it to ground. You must use care when connecting this type of circuitry, since you cannot exceed the 250mA rating at 24V. WHEN IN DOUBT, USE AN OPTO-ISOLATION RELAY. Even though you do not plan to use the I/O points as inputs, it is still very important to connect the PULLUP pin (pin 49) to the supply voltage you are trying to switch. Circuitry that is not shown will insure that the output transistors are clamped to the power source, protecting them from over voltage. This type of output will drive small lamps, very small relays, or opto-isolation relays. Magnetic Isolation Each I/O point is protected with a 36VAC transorb and a 100µH ferrite filter. This circuitry provides a noise isolation and input protection from transients. It will not protect from continuous application of voltages exceeding 30V nor will it protect from currents in excess of 250mA. 11.

12 Specifications: 24 I/O points 0-30VDC output voltage range 125mA I/O current (sink capability) Continuous 250mA I/O current peak for 1 second 0-30VDC input voltage range Input threshold: ½ of input voltage 10KΩ input impedance 12.

13 APPENDIX B - WARRANTY INFORMATION Congratulations and thank you for purchasing one of Eason Technology's products. We strive to provide customers with unparalleled service and support. Your feedback and suggestions are crucial to our success. Please take a few minutes to complete the Warranty and Product Registration Form so that we may better serve your needs. Completing and returning this form within 30 days registers and validates your warranty. Upon receipt of this form, we will ensure that you receive information about product and documentation updates. Thank you for your response. THIS EASON TECHNOLOGY, INC. PRODUCT IS WARRANTED AGAINST DEFECTIVE MATERIALS OR WORKMANSHIP FOR A PERIOD OF 365 DAYS FROM THE DATE OF ORIGINAL SHIPMENT. PRODUCTS COVERED BY THIS WARRANTY WILL BE REPAIRED WITHOUT CHARGE EXCEPT FOR SHIPPING. BEFORE RETURNING PRODUCT FOR WARRANTY SERVICE, CALL OUR CUSTOMER SERVICE DEPARTMENT AT (707) TO OBTAIN AN RMA # (RETURNED MERCHANDISE AUTHORIZATION NUMBER). WHEN RETURNING YOUR EQUIPMENT FOR WARRANTY SERVICE, THE SHIPPING CHARGES MUST BE PREPAID AND THE RMA # MUST BE CLEARLY MARKED ON THE BOX. SEND THE EQUIPMENT TO EASON TECHNOLOGY, INC., 241 B CENTER STREET, HEALDSBURG, CA 95448, ALONG WITH A DESCRIPTION OF THE PROBLEM. WE WILL PAY NORMAL GROUND SHIPPING CHARGES TO SEND THE PRODUCT BACK TO YOU. IF OTHER MEANS OF SHIPPING ARE REQUESTED, YOU WILL BE BILLED AT COST FOR ADDITIONAL SHIPPING FEES. THIS WARRANTY ONLY COVERS DEFECTS IN MATERIALS OR WORKMANSHIP WHICH OCCUR DURING NORMAL USE. IT DOES NOT COVER DAMAGE WHICH OCCURS IN SHIPMENT OR FAILURES WHICH ARE CAUSED BY PRODUCTS NOT SUPPLIED BY EASON TECHNOLOGY OR FAILURES WHICH RESULT FROM ACCIDENT, MISUSE, ABUSE, NEGLECT, MISHANDLING, MISAPPLICATION, FAULTY INSTALLATION, IMPROPER MAINTENANCE, ALTERATION, MODIFICATION, LINE POWER OR SERVICE BY ANYONE OTHER THAN A FACTORY AUTHORIZED TECHNICIAN. THIS WARRANTY COMPRISES THE SOLE AND ENTIRE WARRANTY PERTAINING TO ITEMS PROVIDED HEREUNDER. SELLER MAKES NO OTHER WARRANTY, GUARANTEE, OR REPRESENTATION OF ANY KIND WHATSOEVER. ALL OTHER WARRANTIES, INCLUDING BUT NOT LIMITED TO, MERCHANTABILITY AND FITNESS FOR A PURPOSE, WHETHER EXPRESS, IMPLIED, OR ARISING BY OPERATION OF LAW, TRADE USAGE, OR COURSE OF DEALING ARE HEREBY DISCLAIMED. NOTWITHSTANDING THE FOREGOING, THERE ARE NO WARRANTIES WHATSOEVER ON ITEMS BUILT OR ACQUIRED WHOLLY OR PARTIALLY, TO BUYER'S DESIGNS OR SPECIFICATIONS. LIMITATION OF REMEDY: EASON TECHNOLOGY'S LIABILITY ARISING FROM OR IN ANY WAY CONNECTED WITH THE PRODUCTS SOLD SHALL BE LIMITED EXCLUSIVELY TO REPAIR OR REPLACEMENT OF THE ITEMS SOLD OR REFUND OF THE PURCHASE PRICE PAID BY BUYER, AT SELLER'S SOLE OPTION. IN NO EVENT SHALL EASON TECHNOLOGY INC. BE LIABLE FOR ANY INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES OF ANY KIND OR NATURE WHATSOEVER, INCLUDING BUT NOT LIMITED TO LOST PROFITS ARISING FROM OR IN ANY WAY CONNECTED WITH ITEMS SOLD HEREUNDER, WHETHER ALLEGED TO ARISE FROM BREACH OF CONTRACT, EXPRESS OR IMPLIED WARRANTY, OR IN TORT, INCLUDING WITHOUT LIMITATION, NEGLIGENCE, FAILURE TO WARN OR STRICT LIABILITY. RETAIN THIS WARRANTY SHEET FOR YOUR REFERENCE. IO Module Date Purchased: Serial Number: Purchased From: 13.