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Summary of Contents for Control Technology CTI 2557-A
- Page 1 CTI 2557-A SIXTEEN CHANNEL ISOLATED RTD INPUT MODULE INSTALLATION AND OPERATION GUIDE Ver. 1.0 2557-AIOG 05 26 2021...
- Page 2 Copyright © 2021 Control Technology Inc. All rights reserved. This manual is published by Control Technology Inc., 5734 Middlebrook Pike, Knoxville, TN 37921. This manual contains references to brand and product names which are tradenames, trademarks, and/or registered trademarks of Control Technology Inc.2500 Series®, Siemens® and SIMATIC® are registered trademarks of Siemens AG.
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Page 3: Preface
This Installation and Operation Guide is organized as follows: Chapter 1 provides a description of the module. Chapter 2 covers installation and wiring. Chapter 3 is a guide to troubleshooting. Figure 1 The 2557-A 16 Channel RTD Input Module CTI 2557-A Installation and Operation Guide... -
Page 4: Table Of Contents
Wiring the Input Connectors ................12 2.6.1 Connecting the Shield Wiring ................15 Checking Module Operation ................16 CHAPTER 3. TROUBLESHOOTING ....................18 SPECIFICATIONS ..........................19 Specifications subject to change without notice.................20 JUMPER SETTINGS LOG SHEET .......................21 USER NOTES ............................22 CTI 2557-A Installation and Operation Guide... - Page 5 OF CTI FOR DAMAGES IN CONNECTION WITH LOSS, DELIVERY, USE OR PERFORMANCE OF CTI PRODUCTS OR INTERRUPTION OF BUSINESS, LOSS OF USE, REVENUE OR PROFIT. IN NO EVENT WILL CTI BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES............23 REPAIR POLICY ...........................24 CTI 2557-A Installation and Operation Guide...
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Page 6: Table Of Figures
Figure 14 Removable Wiring Connector Wiring Diagram ...............13 Figure 15 Wiring Diagram for 2, 3 , 4 Wire RTDs and Millivolt Signals ..........14 Figure 16 Cable Grounding .........................16 Figure 17 Example I/O Configuration Chart ....................17 Figure 18 Troubleshooting Matrix .......................18 CTI 2557-A Installation and Operation Guide... -
Page 7: Usage Conventions
Notes alert the user to special features or procedures. CAUTION: Cautions alert the user to procedures which could damage equipment. WARNING: Warnings alert the user to procedures which could damage equipment and endanger the user. CTI 2557-A Installation and Operation Guide... -
Page 9: Chapter 1. Description
This Installation and Operation Guide provides installation and operation instructions for the CTI 2557-A 8-Channel Analog Output Module for SIMATIC® 505 and CTI 2500 Series® programmable controllers. We assume you are familiar with the operation of the CTI 2500 Series® programmable controllers. -
Page 10: Asynchronous Operation
As shown in the following figure, of the two bits not used for the digital word, one is used to show the sign of the word, while the other is used to note values which are "overrange or underrange." 1.4 RTD Input to Digital Conversion Figure 3 Word Input to the PLC from the Module CTI 2557-A Installation and Operation Guide... -
Page 11: Engineering Units
Scaled Integer = (measured temp - min temp) ÷ (max temp - min temp) × 32000 For example the scaled integer offset at 0'C for a 1000 Pt RTD is: Scaled Integer = 0 - (-199.8) ÷ (849 - (-199.8)) × 32000 = 6091 CTI 2557-A Installation and Operation Guide... -
Page 12: Effect Of Out-Of-Range Input Signals
The Model 2557-A uses the least significant bit (16) to indicate an open RTD. The value of this bit is set to 1 when this condition occurs. Figure 5 Effect of Voltage Input - 100 Ohm Platinum Figure 6 Effect of Voltae Input - 120 Ohm Nickel CTI 2557-A Installation and Operation Guide... -
Page 13: Resolution
The module has a resolution of approximately 0.1 degrees C, 0.2 degrees F or exactly 0.01 millivolts. The chart below shows the corresponding input resolution per step for each of the input configuration modes: Figure 9 Input Resolution CTI 2557-A Installation and Operation Guide... -
Page 14: Chapter 2. Installation
Do not touch the circuit card pin connectors, or solder connections. After discharging any static build-up, remove the module from the static bag. Do not discard the static bag. You will need it for the following configuration procedure. CTI 2557-A Installation and Operation Guide... -
Page 15: Configuring The Module
Each channel contains a jumper to select between 2, 3 and 4 wire RTD elements. (See Figure 10, JP68). For 2 wire and 3 wire RTDs no change is required. For 4 wire RTDs the jumper should be removed and placed on a single pin for storage. CTI 2557-A Installation and Operation Guide... -
Page 16: Selecting 2 And 3 Wire Or 4 Wire Operation
Locate the temperature scaling jumper JP66 on the righthand side of the module (see Figure 10) and select either degrees Fahrenheit or Celsius by positioning the jumper in the DEG F or DEG C position. CTI 2557-A Installation and Operation Guide... -
Page 17: Selecting Data Scaling
0-32000. Figure 10 Factory Configuration Jumper Settings NOTE: In the sample chart above the standard shipping configuration is indicated as 3 wire 1000. Pt, 16 WX, filtering enabled, degrees C and scaling disabled. CTI 2557-A Installation and Operation Guide... -
Page 18: Figure 11 Configuration Jumper Locations
Figure 11 Configuration Jumper Locations CTI 2557-A Installation and Operation Guide... -
Page 19: Inserting The Module Into The I/O Base
Be careful not to damage the connector card at the back of the module when inserting or removing the module. WARNING: Remove power from the I/O base before inserting or removing a module. CTI 2557-A Installation and Operation Guide... -
Page 20: Wiring The Input Connectors
The Model 2557-A may compensate for up to 20 Ohm of lead resistance per wire. Use the table in Figure 9 in planning the maximum distance the RTD may be located from the module. Figure 13 Copper Wire Table at 25 Degrees Celsius CTI 2557-A Installation and Operation Guide... -
Page 21: Figure 14 Removable Wiring Connector Wiring Diagram
Block 7 for Channels 13 & 14 Removable Block 8 for Channels 15 & 16 Figure 14 Removable Wiring Connector Wiring Diagram CAUTION: RTD wires must be of the same gauge for proper lead length compensation. CTI 2557-A Installation and Operation Guide... -
Page 22: Figure 15 Wiring Diagram For 2, 3 , 4 Wire Rtds And Millivolt Signals
CAUTION: For proper operation, ensure that the 2557-A is not subjected to large temperature gradients during operation. Figure 15 Wiring Diagram for 2, 3 , 4 Wire RTDs and Millivolt Signals CTI 2557-A Installation and Operation Guide... -
Page 23: Connecting The Shield Wiring
2.6.1 Connecting the Shield Wiring Control Technology Inc. recommends that all signal wires be shielded twisted-pair with a foil wrap shield and a separate drain wire and that they be installed in a metallic conduit. Use Belden cable 8761 or equivalent which contains foil wrap shield and a separate drain wire. The shield and the foil wrap should be twisted together and should be terminated at only one end. -
Page 24: Checking Module Operation
PLC. To view the PLC memory configuration chart listing all slots on the base and the inputs or outputs associated with each slot, refer to your SIMATIC® or TISOFT Programming Manual. An example chart is shown in the following figure. CTI 2557-A Installation and Operation Guide... -
Page 25: Figure 17 Example I/O Configuration Chart
505 I/O slots. Please refer to Siemens® SIMATIC® 505 Programming Reference Manual for more information. If a module failure is reported by the status word, the module should be replaced with a working unit and the failed module sent in for repair. CTI 2557-A Installation and Operation Guide... -
Page 26: Chapter 3. Troubleshooting
CTI for repair. If after consulting the chart above, you are unable to diagnose or solve the problem, contact your local distributor or CTI at 1-800-537-8398 for further assistance. CTI 2557-A Installation and Operation Guide... -
Page 27: Specifications
Degrees C or F selectable by module Digital Filtering Time Constant: 80 mSec (16 WX mode) Update Time (all 16 channels): 18 mSec no filtering 20 mSec digital filtering enabled 48 mSec advanced functions enabled CTI 2557-A Installation and Operation Guide... -
Page 28: Specifications Subject To Change Without Notice
-40' to 85'C (-40' to 185'F) Humidity: 0% to 95%, noncondensing Agency Approvals: UL, UL for Canada FM (Class I, Div 2) CE Shipping Weight: 1.5 lbs. (0.68 kg) Specifications subject to change without notice. CTI 2557-A Installation and Operation Guide... -
Page 29: Jumper Settings Log Sheet
JUMPER SETTINGS LOG SHEET Record the configuration jumper settings on this log and circle RTD type selected for future reference. Make additional copies if necessary. CTI 2557-A Installation and Operation Guide... -
Page 30: User Notes
USER NOTES CTI 2557-A Installation and Operation Guide... - Page 31 CTI. Control Technology Inc. reserves the right to make changes to the Product in order to improve reliability, function, or design in the pursuit of providing the best possible Product. CTI assumes no responsibility for indirect or consequential damages resulting from the use or application of this equipment.
- Page 32 Failure to observe static control precautions may void the warranty. For additional information on static control precautions, contact CTI's main office at 1-800-537-8398. CTI 2557-A Installation and Operation Guide...
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