Related Manuals for Control Technology 2556-A
Summary of Contents for Control Technology 2556-A
- Page 1 CTI 2556-A SIXTEEN CHANNEL ISOLATED THERMOCOUPLE INPUT MODULE INSTALLATION AND OPERATION GUIDE Version 1.0...
-
Page 2: Revision History
Copyright © 2020 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. Siemens® and SIMATIC® are registered trademarks of Siemens AG. - Page 3 PREFACE This Installation and Operation Guide provides installation and operation instructions for the CTI 2556-A Sixteen Channel Isolated Thermocouple Input Module for CTI’s 2500 Series 2500® Processors as well as the legacy SIMATIC® 505 programmable controllers. We assume you are familiar with the operation of CTI’s 2500 Series 2500®...
- Page 4 USAGE CONVENTIONS NOTE: 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 2556 Installation and Operation Guide...
-
Page 5: Table Of Contents
TABLE OF CONTENTS Contents REVISION HISTORY .............................. i CHAPTER 1. DESCRIPTION ........................... 1 Front Panel Description ........................1 1.1.1 Active LED ........................2 1.1.2 Input Terminals for Channels 1-16 ................... 2 1.2 Asynchronous Operation ........................2 1.2.1 Immediate I/O Compatibility ......................2 1.3 J, K, R, S, T, E, or L Thermocouples and mV ................. - Page 6 TABLE OF FIGURES Figure 1 2556-A 16-Channel Isolated Thermocouple Input Module ............ii Figure 2 2556-A Front Panel Description......................1 Figure 3 Word Input to the PLC from the Module.................... 2 Figure 4 Example Change in Input Level ......................3 Figure 5 Effect of Voltage Input on Type J Thermocouple ................
-
Page 7: Chapter 1. Description
2500 Series 2500® Processors and the SIMATIC® 505 Series programmable controllers. The Model 2556-A is designed to translate a J, K, R, S, T, E, and L (DIN J) thermocouple or millivolt input signal into an equivalent digital word which is then sent to the programmable controller (PLC). -
Page 8: Active Led
The Model 2556-A has been tested and is compatible with the Immediate Read function of the SIMATIC® 545 and 555 PLC. The Model 2556-A is compatible with 545 and 555 PLCs. It is compatible with the 525 PLCs in 16WX mode only. -
Page 9: Thermocouple Input To Digital Conversion
Open thermocouples report temperatures that are out of the allowable range. This condition may occur due to failure of the thermocouple or due to the thermocouple wire being cut or disconnected. The Model 2556-A will report an open thermocouple condition within 200 milliseconds. -
Page 10: Figure 5 Effect Of Voltage Input On Type J Thermocouple
NOTE: The Model 2556-A uses the least significant bit (16) to indicate an open thermocouple. The value of this bit is set to 1 when this condition occurs. An open thermocouple condition will report within 200 milliseconds. Figure 5 Effect of Voltage Input on Type J Thermocouple... -
Page 11: Figure 9 Effect Of Voltage Input On Type T Thermocouple
Figure 9 Effect of Voltage Input on Type T Thermocouple Figure 10 Effect of Voltage Input on Type E Thermocouple Figure 11 Effect of Voltage Input on Type L Thermocouple Figure 12 Effect of Voltage Input on Millivolt Range 2556-A Installation & Operation Guide... -
Page 12: Resolution
1.7 Resolution The module has a resolution of approximately 0.1°C, 0.2°F or 0.01 millivolts. The chart below shows the corresponding input resolution per step for each of the input configuration modes: Figure 13 Input Resolution 2556-A Installation & Operation Guide... -
Page 13: Chapter 2. Installation
2.2 Calculating the I/O Base Power Budget The Model 2556-A requires 5 watts of +5 VDC power from the I/O base. Use these values to verify that the base power supply capacity is not exceeded. 2.3 Unpacking the Module... -
Page 14: Configuring The Module
2.4 Configuring the Module The Model 2556-A must be configured for type J, K, R, S, T, E thermocouples or millivolt range and digital filtering/no filtering mode before wiring the input connectors and inserting the module into the I/O base. -
Page 15: Selecting Thermocouple Type Input Via Hardware Jumpers
.08 seconds, the value is 63% of full range at .16 seconds, the value is 86% of full range at .24 seconds, the value is 95% of full range, and at .40 seconds, the value is 99% of full range. 2556-A Installation & Operation Guide... -
Page 16: Select Degrees Celsius Or Fahrenheit
Locate the temperature scaling jumper JP66 on the right hand side of the module (see Figure 16 Configuration Jumper Location ) and select either degrees Celsius or Fahrenheit by positioning the jumper in the "DEG C" or "DEG F" position. Figure 14 Factory Configuration Jumper Settings 2556-A Installation & Operation Guide... -
Page 17: Figure 15 Printed Circuit Board Layout
Figure 15 Printed Circuit Board Layout 2556-A Installation & Operation Guide... -
Page 18: Inserting The Module Into The I/O Base
I/O base, loosen the captive screws, then remove the module from the I/O base. Be careful not to damage the connector card at the back of the module when inserting or removing the module. 2556-A Installation & Operation Guide... -
Page 19: Wiring The Input Connectors
Wires must be inserted by pressing the wire into the connector receptacle and tightening the cage clamp screw. To remove the wire unscrew the cage clamp screw then remove the thermocouple wire. Figure 17 Input Connector Wiring 2556-A Installation & Operation Guide... -
Page 20: Figure 18 Thermocouple Wiring Application
Figure 18 Thermocouple Wiring Application Figure 19 Millivolt Wiring Application 2556-A Installation & Operation Guide... -
Page 21: Connecting The Shield Wiring
2.6.1 Connecting the Shield Wiring Control Technology Inc. recommends that all signal wires be shielded twisted-pair with foil wrap shield and a separate drain wire and that they be installed in a metallic conduit. Use Belden cable 8761 or equivalent whcih contains a foil wrap shield and a separate drain wire. -
Page 22: Checking Module Operation
PLC. In this example, the Model 2556-A Module is inserted in slot 1 in I/O base 0. Data for channel 1 appears in word location WX1, data for channel 2 appears in word location WX2, etc. For your particular module, look in the chart for the number corresponding to the slot occupied by the module. - Page 23 Refer to Hewlett-Packard Applications Note 290 or Omega Temperature Handbook, Volume 26, Section T, for "practical thermocouple measurement" applications. CAUTION: For proper operation, ensure that the Model 2556-A and the thermocouple wires are not subjected to large temperature gradients during operation. NOTE: In the event a CTI analog detects an onboard module failure, the module will assert the module fail line and report the module failure in the I/O Status Word, which is reported to the PLC CPU.
-
Page 24: Chapter 3. Troubleshooting
When it is inconvenient to visually check the status indicator, use the TISOFT "Display Failed I/O" or "Show PLC Diagnostics" support functions. 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. Figure 21 Troubleshooting Matrix 2556-A Installation & Operation Guide... -
Page 25: Specifications
±4°F from 0°C to 60°C ambient Reduced accuracy for measurements below 500C Millivolt Accuracy: ±50 µV from 0°C to 60°C Millivolt Temperature Drift: 5ppm / °C >180 dB@ 60 Hz, >80db @ 50 Hz Common Mode Rejection: >130 dB@ 2556-A Installation & Operation Guide... - Page 26 Agency Certificates of Compliance. Standard Shipping Configuration: Type J Digital Filtering Enabled Degrees C 16WX mode Engineering Data Format Temp x 10 NOTE: This module requires a special connector the 2559-FPC. The connector is ordered separately. 2556-A Installation & Operation Guide...
-
Page 27: Jumper Settings Log Sheet
The Model 2556 Thermocouple Input Module is calibrated at the factory. No further calibration is required. All calibration parameters are sorted in non-volatile memory. There are no user adjustments on this product. As shipped there is no jumper required on the CAL input. 2556-A Installation & Operation Guide... -
Page 28: Thermocouple Wire Guide
Grade 4208°F WHITE 2320°C TUNGSTEN- TUNGSTEN- c:::-i NONE NONE RHENIUM 25% RHENIUM Ther To fg g 1 w a de 0 to 39.506 ESTABLISHED W-3%Re W-25%Re WHITE- to 260°C YELLOW TRACE Extenso i n Grade 2556-A Installation & Operation Guide... - Page 29 USER NOTES 2556-A Installation & Operation Guide...
-
Page 30: Limited Product Warranty
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 31: Repair Policy
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. 2556-A Installation & Operation Guide...
Need help?
Do you have a question about the 2556-A and is the answer not in the manual?
Questions and answers