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Siemens SIMATIC 505 Installation And Operation Manual

505-2556 sixteen channel isolated thermocouple input module
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SIMATIC 505
505–2556 Sixteen Channel Isolated
Thermocouple Input Module
Installation and Operation Guide
Order Number: PPX:505–8133–1
Manual Assembly Number: 2807059–0001
Original Edition

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  • Page 1 SIMATIC 505 505–2556 Sixteen Channel Isolated Thermocouple Input Module Installation and Operation Guide Order Number: PPX:505–8133–1 Manual Assembly Number: 2807059–0001 Original Edition...
  • Page 2 All Rights Reserved — Printed in USA Reproduction, transmission, or use of this document or contents is not permitted without express consent of Siemens Energy & Automation, Inc. All rights, including rights created by patent grant or registration of a utility model or design, are reserved.
  • Page 3 MANUAL PUBLICATION HISTORY SIMATIC 505–2556 Thermocouple Input Module Installation and Operation Guide Order Manual Number: PPX:505–8133–1 Refer to this history in all correspondence and/or discussion about this manual. Event Date Description Original Issue 05/98 Original Issue (2807059–0001)
  • Page 4 LIST OF EFFECTIVE PAGES Pages Description Pages Description Cover/Copyright Original History/Effective Pages Original iii — x Original 1-1 — 1-7 Original 2-1 — 2-13 Original 3-1 — 3-31 Original A-1 — A-1 Original B-1 — B-2 Original C-1 — C-1 Original D-1 —...

  • Page 5: Table Of Contents

    Contents Preface Chapter 1 Description Front Panel Description ............Active LED .
  • Page 6 3-10 Loading Data into the SIMATIC 505–2556 Module ....... . .
  • Page 7 ............2-12 3-1 Configuring the SIMATIC 505–2556 Module for Advanced Features ....
  • Page 8 A-1 Troubleshooting Matrix ............C-1 Factory Configuration Jumper Settings .
  • Page 9 3-19 3-9 Default Function Values for SIMATIC 505–2556 ........

  • Page 10: Preface

    SIMATICr 505–2556 Sixteen Channel Isolated Thermocouple Input Module for SIMATIC 505 programmable controllers. We assume you are familiar with the operation of SIMATIC 505 programmable controllers. Refer to the appropriate SIMATIC user documentation for specific information on the SIMATIC 505 programmable controllers and I/O modules.
  • Page 11 (IEC–65A/WG6) for programmable controllers (released as IEC 1131–2, Programmable Controllers, Part 2: Equipment Requirements and Tests, First Edition, 1992–09). Contact Siemens Energy & Automation, Inc., for information about regulatory agency approvals that have been obtained on Series 505 units.

  • Page 12: Chapter 1 Description

    ..........SIMATIC 505–2556 Installation and Operation Guide...

  • Page 13: Front Panel Description

    Active LED is not lit, refer to Chapter 3 for troubleshooting. Input Terminals for The SIMATIC 505–2556 uses a fixed wire press in connector to minimize Channels 1–16 the effects of the connector mettalurgy on the accuracy of the measurement.

  • Page 14: Operation And Configuration

    The PLC retrieves the stored words from the module buffer memory at the start of the I/O scan. Immediate I/O The SIMATIC 505–2556 has been tested and is compatible with the Compatibility Immediate Read function of the SIMATIC 545 and 555 PLC. The SIMATIC 505–2556 is compatible with 545 and 555 PLCs.

  • Page 15: Thermocouple Input To Digital Conversion

    The SIMATIC 505–2556 will report an open thermocouple condition within 200 milliseconds. NOTE: The SIMATIC 505–2556 uses the least significant bit (16) to indicate an open thermocouple. The value of this bit is set to 1 when this condition occurs.

  • Page 16: Effect Of Voltage Input On Type J Thermocouple

    Figure 1-4 Effect of Voltage Input on Type J Thermocouple Figure 1-5 Effect of Voltage Input on Type K Thermocouple Figure 1-6 Effect of Voltage Input on Type R Thermocouple Figure 1-7 Effect of Voltage Input on Type S Thermocouple SIMATIC 505–2556 Installation and Operation Guide Description...

  • Page 17: Effect Of Voltage Input On Type T Thermocouple

    Figure 1-8 Effect of Voltage Input on Type T Thermocouple Figure 1-9 Effect of Voltage Input on Type E Thermocouple Figure 1-10 Effect of Voltage Input on Type L Thermocouple Figure 1-11 Effect of Voltage Input on Millivolt Range Description SIMATIC 505–2556 Installation and Operation Guide...

  • Page 18: Resolution

    With no jumper at CN10, the filter frequency is 60 Hz. By placing the 3–pin jumper (included in an envelope packed with the SIMATIC 505–2556) at location CN10, the filter frequency is changed to 50 Hz. SIMATIC 505–2556 Installation and Operation Guide...

  • Page 19: Chapter 2 Installation

    ........... . 2-12 SIMATIC 505–2556 Installation and Operation Guide Installation...

  • Page 20: Getting Started

    The following sections discuss these important considerations. Calculating the I/O The SIMATIC 505–2556 requires 5 watts of +5 VDC power from the I/O Base Power Budget base. Use these values to verify that the base power supply capacity is not exceeded.

  • Page 21: Configuring The Module

    Configuring the Module The SIMATIC 505–2556 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. NOTE: As shipped, all input channels are configured for Type J thermocouples (degrees Celsius) and digital filtering enabled, 16 WX mode and engineering units.

  • Page 22: Selecting Thermocouple Or Millivolt Measurement Via Dip Switch

    Locate SCALE jumper JP69 on the printed circuit board. (See Figure 13.) Format Select Engr to present data to the PLC as temperature X10 or Millivolt X100. Select SCALE to scale and present data as an unsigned integer from 0–32000. Installlation SIMATIC 505–2556 Installation and Operation Guide...

  • Page 23: Selecting Digital Filtering

    Locate the Digital Filtering Jumper JP67. To enable digital filtering, set the Filtering jumper in the ”ENABLED” position. Since many analog input signals contain noise, Siemens recommends using digital filtering unless maximum response time is required. Digital filtering applies to both thermocouple or millivolt inputs.

  • Page 24: Select Degrees Celsius Or Fahrenheit

    Locate the temperature scaling jumper JP66 on the right hand side of the Celsius or module (see Figure 13) and select either degrees Celsius or Fahrenheit by Fahrenheit positioning the jumper in the “DEG C” or “DEG F” position. Figure 2-1 Factory Configuration Jumper Settings Installlation SIMATIC 505–2556 Installation and Operation Guide...

  • Page 25: 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. SIMATIC 505–2556 Installation and Operation Guide Installation...

  • Page 26: Wiring The Input Connectors

    The front connector accepts wire from 18 to 30 AWG. The SIMATIC 505–2556 uses a fixed connector to terminate field wiring. This is used because the chemistry of a removable connector may have an adverse effect on the accuracy of the measurement.

  • Page 27: Thermocouple Wiring Application

    Ground at One End Only Figure 2-4 Thermocouple Wiring Application Ground at One End Only Figure 2-5 Millivolt Wiring Application SIMATIC 505–2556 Installation and Operation Guide Installation...

  • Page 28: Connecting The Shield Wiring

    The shield and the foil wrap should be twisted together and should be terminated at only one end. The other end should be left in an open circuit condition. Siemens recommends that the shield be terminated at the PLC end of signal wire. Special components are installed on the module to aid in the rejection of noise.

  • Page 29: Cable Grounding

    Figure 2-6 Cable Grounding SIMATIC 505–2556 Installation and Operation Guide Installation 2-11...

  • Page 30: Checking Module Operation

    26–18 gauge. This will verify that all channels are operating and that the module is logged into the PLC. In this example, the SIMATIC 505–2556 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.
  • Page 31 If the line is blank or erroneous, re–check the module to ensure that it is firmly seated in the slots. Generate the PLC I/O configuration chart again. If the line is still incorrect, contact your Siemens Energy & Automation, Inc., distributor or sales office.

  • Page 32: Advanced Software Functions

    3-10 Loading Data into the SIMATIC 505–2556 Module ....... . .

  • Page 33: Introduction

    Peak/valley hold The peak or valley of a rapidly changing analog signal has been impossible to detect unless an external circuit was used. The SIMATIC 505–2556 makes possible the detection of a peak or valley and holds that value until reset by the controller. The peak/valley measurement is available to the controller at the same time as the currently measured analog value.

  • Page 34: Setting The Module Configuration Jumper

    Setting the Module Before you begin to use the advanced mode of the SIMATIC 505–2556, all of Configuration the hardware functions, such as voltage range input levels, type of thermocouple, _C or _F, etc., should be set up in accordance with the...

  • Page 35: Logging The Module In The Controller I/O Configuration Memory

    To view the controller memory configuration chart listing all slots on the base and the inputs or outputs associated with each slot, refer to your SIMATIC 505 TISOFT2 User Manual. An example chart is shown in Figure 3-2. When the module is properly logged in to the controller as a high-density discrete and analog module the configuration is 16X, 16Y, 32WX, and 32WY registers.

  • Page 36: Internal Register Structures

    Internal Register Structures Description of the The SIMATIC 505–2556 module in the high-density mode logs in to the I/O Registers controller as 32 WX input registers, 32 WY output registers and 16 X and 16 Y discrete inputs and outputs. This high-density configuration provides support for reading the raw data and the processed data, and for writing the configuration data to the module.

  • Page 37: Input Flag Bits

    WX49 – WX64 is the peak (Y30=1) or valley (Y30=0) value measured. See Table 3-3. Table 3-3 Peak/Valley Hold Input Words WX 49 Channel 1 Peak/Valley value WX 64 Channel 16 Peak/Valley value Advanced Function Programming SIMATIC 505–2556 Installation and Operation Guide...

  • Page 38: Output Registers

    Output Registers The SIMATIC 505–2556 module also utilizes 32 WY registers. These registers are used to transfer the scaling values, the alarm setpoints, the filtering time constants, and the averaging count values to each of the sixteen channels. After the data is loaded into the module, these registers then enable each of the functions on a channel-by-channel basis.

  • Page 39: Control Registers

    Control Registers The control registers (X and Y discrete I/O points) are the handshake bits and steering logic used to load the data into the SIMATIC 505–2556 module and to request special operations from the module. These registers consist of the discrete inputs and outputs of the module.

  • Page 40: Discrete Handshake Inputs

    Before any transfers are made to the module, the relay ladder program should examine the state of this input. (Only when the input is true), can the loading operation begin. Figure 3-4 Discrete Handshake Inputs SIMATIC 505–2556 Installation and Operation Guide Advanced Function Programming...

  • Page 41: Outputs

    Y17 – Y19 are used to identify the data being transferred. As data is loaded to the module, the state of these bits identifies the type of data being transferred (see Table 3-6). The SIMATIC 505–2556 module decodes these bits and processes the data accordingly.

  • Page 42: Loading Data Into The Simatic 505-2556 Module

    Loading Data into The process by which data is loaded into the SIMATIC 505–2556 module is the SIMATIC shown in Figure 3-6. 505–2556 Module Set up V-memory table with alarm setpoints Module_Ready? Move data to WY output registers Set data identification...

  • Page 43: Sample Low And High Alarm Setpoints

    Internal Register Structures (continued) The following steps explain how data is loaded into the SIMATIC 505–2556 module. V- or K-memory tables are constructed with the scaling, alarm setpoints, filtering and averaging units. In the example below, low alarm and high alarm setpoints are loaded for each channel from V1 through V32.

  • Page 44: Identifying The Data Being Transferred

    Specified word Figure 3-9 Identifying the Data Being Transferred Y32 Data_Ready is energized to transfer the word data into the module (see Figure 3-10). Data_Ready Figure 3-10 The Data_Ready Bit SIMATIC 505–2556 Installation and Operation Guide Advanced Function Programming 3-13...

  • Page 45: Enabling The Functions Loaded

    Figure 3-11 Enabling the Functions Loaded With the Data_Ready bit, data is transferred with Y32 (see Figure 3-12). MWIR A V303 B Y17 V303=1 Data_Ready Figure 3-12 Loading the Enable Bits 3-14 Advanced Function Programming SIMATIC 505–2556 Installation and Operation Guide...

  • Page 46: Loading Programs Into The I/O Module

    3.8 and 3.9 to ensure a successful installation and start-up. The following sample ladder program is provided to demonstrate how the data is loaded into the SIMATIC 505–2556 module. Each channel is enabled for all functions supported. This sample RLL loads the module with alarm, scaling, filtering, averaging, and function enable bits.

  • Page 47: Startup Relay Ladder Logic

    RSTI SETI Module_Ready MOVW TCC1 +2 RSTI A:V65 B:WY65 N=32 SETI RSTI SETI Module_Ready MOVW TCC1 +3 RSTI A:V97 B:WY65 N=32 SETI RSTI SETI Figure 3-13 Startup Relay Ladder Logic 3-16 Advanced Function Programming SIMATIC 505–2556 Installation and Operation Guide...
  • Page 48 When this transfer is complete, the counter current value is now equal to 4 which is the preset value and the configuration sequence is complete. Another configuration sequence can be initiated by toggling the counter reset bit to reset the counter. SIMATIC 505–2556 Installation and Operation Guide Advanced Function Programming 3-17...

  • Page 49: Timing Considerations

    Timing Considerations Without any of the advanced features enabled, the SIMATIC 505–2556 module will update all 16 points in less than 6 msec. With all functions enabled for all 16 points, the module will update all 16 channels in less than 56 msec.

  • Page 50: Additional Information About Each Function

    6400 32,000 Filtering time constants 250 msec Averaging 20 averages Peak hold Valley hold Table 3-9 Default Function Values for SIMATIC 505–2556 Functions Enabled Low Default Value High Default Value Alarm setpoints Scaling engineering units Filtering time constants 250 msec...

  • Page 51: Degrees Centigrade Or Degrees Fahrenheit

    Numerical Range All numbers used for alarm setpoints are expressed as signed integers. The numerical range for scaling is 32767. If a value of –32768 is loaded into the module, then the value in the module is adjusted to –32767. 3-20 Advanced Function Programming SIMATIC 505–2556 Installation and Operation Guide...

  • Page 52: Digital Filtering

    4 to 5 time constants to reach 99% of the final value.) The value entered is the actual settling time. NOTE: In the SIMATIC 505–2556 module, the value used in digital filtering is not a time constant but is the settling time for the system to reach the full resolution of the analog-to-digital converter (ADC).

  • Page 53: Averaging

    This is not the case if a reset is issued to the valley function. On reset the valley threshold is the current value. 3-22 Advanced Function Programming SIMATIC 505–2556 Installation and Operation Guide...

  • Page 54: Peak And Valley Hold Reset

    In the event that an alarm exists on a channel, the ladder logic may determine whether the alarm has reached the low alarm or the high alarm. SIMATIC 505–2556 Installation and Operation Guide Advanced Function Programming 3-23...

  • Page 55: Advanced Function Precedence

    When using more than one of the advanced functions, it is necessary to Function understand the order in which these functions are performed in the Precedence SIMATIC 505–2556 hardware. The order of precedence for these functions is as follows: Scaling for low and high engineering units Filtering...

  • Page 56: Troubleshooting

    X16 Module_Ready input does indeed turn on. If this input does not turn on, there is a problem with the module. Contact the Siemens Energy & Automation, Inc., Technical Services Group. Verify that the Y32 Data_Ready output does indeed turn on to load the data into the SIMATIC 505–2556 module.

  • Page 57: Troubleshooting Flow Diagram

    Debug ladder program. execute Verify V-memory tables. No functions working No functions working Offsets incorrect Calculate offsets starting address Functions never enabled Edit ladder program to enable function after loading data 3-26 Advanced Function Programming SIMATIC 505–2556 Installation and Operation Guide...

  • Page 58: I/O Register Quick Reference

    I/O Register Quick Reference Figure 3-17 I/O Register Quick Reference SIMATIC 505–2556 Installation and Operation Guide Advanced Function Programming 3-27...

  • Page 59: Or K Memory Configuration Tables

    V or K Memory Configuration Tables 3-28 Advanced Function Programming SIMATIC 505–2556 Installation and Operation Guide...
  • Page 60 SIMATIC 505–2556 Installation and Operation Guide Advanced Function Programming 3-29...

  • Page 61: Addressing Worksheet

    Addressing Worksheet 3-30 Advanced Function Programming SIMATIC 505–2556 Installation and Operation Guide...

  • Page 62: Items Unique To The Simatic 505-2556 Module

    3.10 Items Unique to the SIMATIC 505–2556 Module Items unique to the SIMATIC 505–2556 Thermocouple Input Module. Open Thermocouple Status Bits: WX55 Figure 3-18 Open Thermocouple Bits The bits returned in WX 55 indicate if there is an open thermocouple.

  • Page 63: Appendix A 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 below, you are unable to diagnose or solve the problem, contact the Siemens Energy & Automation, Inc., Technical Services Group. Figure A-1 Troubleshooting Matrix SIMATIC 505–2556 Installation and Operation Guide...

  • Page 64: Appendix B Specifications

    18 mSec no filtering 20 mSec digital filtering enabled 48 mSec advanced functions enabled 0.2_C or _F all thermocouple types (16WX mode) Repeatability 0.1_C or _F all thermocouple types (advanced mode) 50 µV (millivolt inputs) SIMATIC 505–2556 Installation and Operation Guide Specifications...
  • Page 65 –40_C to 85_C (–40_F to 185_F) Humidity, Relative 5% to 95% (non-condensing) 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. Specifications SIMATIC 505–2556 Installation and Operation Guide...

  • Page 66: Appendix C Jumper Settings Log Sheet

    Make additional copies if necessary. Figure C-1 Factory Configuration Jumper Settings NOTE: The SIMATIC 505–2556 Thermocouple Input Module is calibrated at the factory. No further calibration is required. All calibration parameters are stored in non–volatile memory. There are no user adjustments on this product.

  • Page 67: Appendix D Thermocouple Wire Guide

    Appendix D Thermocouple Wire Guide Figure D-1 Thermocouple Wire Guide SIMATIC 505–2556 Installation and Operation Guide Thermocouple Wire Guide...
  • Page 68 Would you be interested in giving us more detailed comments about our manuals? Yes! Please send me a questionnaire. No. Thanks anyway. Your Name: Title: Telephone Number: Company Name: Company Address: Manual Name: SIMATIC 505–2556 16 Channel Isolated Thermocouple Input Module Edition: Original Manual Assembly Number: 2807059–0001 Date: 05/98 Order Number: PPX:505–8133–1...
  • Page 69 FOLD SIEMENS ENERGY & AUTOMATION INC NO POSTAGE NECESSARY 3000 BILL GARLAND ROAD IF MAILED PO BOX 1255 IN THE JOHNSON CITY TN 37605–1255 UNITED STATES BUSINESS REPLY MAIL PERMIT NO.3 FIRST CLASS JOHNSON CITY, TN POSTAGE WILL BE PAID BY ADDRESSEE ATTN TECHNICAL COMMUNICATIONS M/S 519 SIEMENS ENERGY &...
  • Page 70 SIMATIC is a registered trademark of Siemens AG. Series 505 and TISOFT are trademarks of Siemens Energy & Automation, Inc.

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