SIMA
TIC 505
505–2557 Sixteen Channel Isolated
R
TD Input Module
Installation
and Operation Guide
Order Number: PPX:505–8134–1
Manual Assembly Number: 2807060–0001
Original Edition
!
DANGER
DANGER
indicates an imminently hazardous situation that, if not avoided, will
result in death or serious injury
.
DANGER is limited to the most extreme situations.
!
WARNING
W
ARNING indicates a potentially hazardous situation that, if not avoided, could
result in death or serious injury, and/or property damage.
!
CAUTION
CAUTION indicates a potentially hazardous situation that, if not avoided, could
result in minor or moderate injury, and/or damage to property
.
CAUTION is also used for property-damage-only accidents.
Copyright
1998 by Siemens Energy & Automation, Inc.
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.
Since Siemens Energy & Automation, Inc., does not possess full access to data concerning all of the uses and applications of
customer’
s products, we do not assume responsibility either for customer product design or for any infringements of patents or rights
of others which may result from our assistance.
MANUAL PUBLICA
TION HISTOR
Y
SIMATIC 505–2557 R
TD Input Module Installation and Operation Guide
Or
der Manual Number: PPX:505–8134–1
Refer to this history in all correspondence and/or discussion about this manual.
Event Date Description
Original Issue
05/98
Original Issue (2807060–0001)
LIST
OF EFFECTIVE P
AGES
Pages Description Pages Description
Cover/Copyright Original
History/Effective
Pages
Original
iii —viii
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
Contents iii
Contents
Preface
Chapter 1 Description
1.1 Operating
Modes
1-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Asynchronous
Operation
1-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compatability
with Immediate I/O
1-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
100
Ohm, 10 Ohm, 120 Ohm R
TDs, or Millivolt Inputs
1-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital
W
or
d Map
1-3.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 RTD
Input to Digital Conversion
1-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engineering
Units
1-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scale
Units
1-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Effect
of Out-of-Range Input Signals
1-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Resolution 1-7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2 Installation
2.1 Installing
and Configuring the Module
2-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Planning
the Installation
2-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calculating
the I/O Base Power Budget
2-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unpacking
the Module
2-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring
the Module
2-3.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting Temperatur
e or Millivolt Input
2-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting
2 and 3 W
ir
e or 4 W
ir
e Operation
2-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting
10 Ohm R
TD Inputs
2-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting
PLC Login Mode
2-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting
Digital Filtering
2-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting
Degr
ees Celsius or Fahr
enheit 2-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting
Data Scaling
2-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inserting
the Module Into the I/O Base
2-7.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Wiring
the Input Connectors
2-8.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting
the Shield W
iring 2-11.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking
Module Operation
2-13.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 3 Advanced Function Programming
3.1 Advanced
Softwar
e Functions
3-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 3-2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview
of the Advanced Functions
3-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting
the Module Configuration Jumper
3-3.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logging
the Module in the Contr
oller I/O Configuration Memory
3-4.
. . . . . . . . . . . . . . . . .
iv Contents
3.2 Internal
Register Structur
es 3-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description
of the I/O Registers
3-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input
Registers
3-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output
Registers
3-7.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control
Registers
3-8.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inputs 3-8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outputs 3-10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading
Data into the SIMA
TIC 505–2557 Module 3-11.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Loading
Pr
ograms into the I/O Module
3-15.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Timing
Considerations
3-18.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Timing
Constraints When Using Advanced Functions
3-18.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Additional
Infor
mation about Each Function
3-19.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Default Values 3-19.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Degrees
Centigrade or Degr
ees Fahr
enheit 3-20.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scaling 3-20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alarm
Setpoints
3-20.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital
Filtering
3-21.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Averaging 3-22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak
and V
alley Hold
3-22.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak
and V
alley Hold Reset
3-23.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flag
Bits
3-23.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Advanced
Function Pr
ecedence 3-24.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6 Troubleshooting 3-25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting
the System
3-25.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7 I/O
Register Quick Refer
ence 3-27.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.8 V
or K Memory Configuration T
ables 3-28.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.9 Addressing
W
orksheet 3-30.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.10 Items
Unique to the SIMA
TIC 505–2557 Module
3-31.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix A Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Appendix B Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Appendix C Jumper Settings Log Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Contents v
List of Figures
1-1Word
Input to the PLC fr
om the Module
1-3.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2Example
Change Input Level
1-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3Effectof V
oltage Input - 100 Ohm Platinum
1-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-4Effect
of V
oltage Input - 120 Ohm Nickel
1-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-5Effect
of V
oltage Input - 10 Ohm Copper
1-6.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-6Effect
of V
oltage Input - Millivolts
1-6.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-7Input
Resolution
1-7.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1Factory
Configuration Jumper Settings
2-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2Configuration
Jumper Locations
2-6.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-3Copper
W
ir
e T
able at 25 Degr
ees Celsius
2-8.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4Press
In W
iring Connector
2-9.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5Wiring
Diagram for 2, 3, or 4 W
ir
e R
TD 2-10.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6Wiring
Diagram for Millivolt Measur
ements 2-11.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-7Cable
Gr
ounding 2-12.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-8Example
I/O Configuration Chart
2-13.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1Configuring
the SIMA
TIC 505–2557 Module for Advanced Featur
es 3-3.
. . . . . . . . . . . . . . . . . .
3-2SIMATIC
505–2557 I/O Configuration Chart
3-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-3Input
Flag Bits
3-6.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-4Discrete
Handshake Inputs
3-9.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-5Data T
ransfer Contr
ol Bits
3-10.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-6Data
Loading Pr
ocess 3-11.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-7Sample
Low and High Alar
m Setpoints
3-12.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-8The
Module_Ready Bit
3-12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-9Identifying
the Data Being T
ransferred 3-13.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-10The
Data_Ready Bit
3-13.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-11Enabling
the Functions Loaded
3-14.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-12Loading
the Enable Bits
3-14.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-13Startup
Relay Ladder Logic
3-16.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-14Peak/Valley T
ruth T
able 3-22.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-15Peak/Valley
Reset T
ruth T
able 3-23.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-16Mapping
Bit Position to Channel Number
3-23.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-17I/O
Register Quick Refer
ence 3-27.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-18Open R
TD Status Bits
3-31.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-1Troubleshooting
Matrix
A-1.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-1Jumper
Settings Log Sheet
C-1.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vi Contents
List
of T
ables
3-1 Input
and Output Register Of
fsets 3-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-2 Input
Channel Data
3-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-3 Peak/Valley
Hold Input W
ords 3-6.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-4 Output
Data Registers
3-7.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-5 Function
Enable Bits
3-8.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-6 Data
Identification Bits
3-10.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-7 Timing
Over
head for Functions Enabled
3-18.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-8 Default
Function V
alues 3-19.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-9 Default
Function V
alues for SIMA
TIC 505–2557 3-19.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-10 Troubleshooting
Flow Diagram
3-26.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B-1 Specifications B-1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface
vii
SIMATIC 505–2557 Installation and Operation Guide
Preface
This
Installation and Operation Guide provides installation and operation
instructions for the SIMA
TIC
505–2557 Sixteen Channel Isolated RTD
Input Module for SIMA
TIC 505 programmable controllers. W
e assume you
are familiar with the operation of SIMA
TIC 505 series programmable
controllers. Refer to the appropriate SIMA
TIC user documentation for
specific information on the SIMATIC 505 programmable controllers and I/O
modules.
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.
•
Appendix A is a guide to troubleshooting
•
Appendix B is a table of specifications.
•
Appendix C is a log sheet for your configuration jumper settings.
505–2557
Figur
e 1
SIMA
TIC 505–2557 16-Channel R
TD Input Module
Preface
viii
SIMATIC 505–2557 Installation and Operation Guide
Additional
manuals that have relevant information include the following:
• SIMA
TIC 545/555/575 System Manual
(PPX:505–8201–x).
• SIMA
TIC 545/555/575
Programming Reference User Manual
(PPX:505–8204–x).
• SIMA
TIC 505 TISOFT2
t
User Manual
(PPX:TS505–8101–x).
Refer to material in these manuals as necessary for additional information
about programming and operating your 545/555/575 system.
Series 505
t
products have been developed with consideration of the draft
standard of the International Electrotechnical Commission Committee
proposed standard (IEC–65A/WG6) for programmable controllers (released
as IEC 1
131–2, Programmable Controllers, Part 2: Equipment
Requirements and T
ests, First Edition, 1992–09). Contact Siemens Energy
& Automation, Inc., for information about regulatory agency approvals that
have been obtained on Series 505 units.
Agency approvals are the following:
–
UL-listed (industrial control equipment)
–
CUL (Canadian UL)
–
FM (Class I, Div
. 2, Group A, B, C, D Hazardous Locations)
Generally
, products listed in this manual comply with the essential
requirements of European Community EMC Directive, number 89/336/EEC,
and carry the CE label. See the declaration of conformity included with each
CPU for a listing of specific products and compliance details.
For additional technical assistance, call the Siemens T
echnical Services
Group in Johnson City
, T
ennessee at 1-800-942-5697 or 423-461-2522, or
contact them by e-mail at
. For
technical assistance outside the United States, call 49-91
1-895-7000.
Related Manuals
Agency Standar
ds
Agency Appr
ovals
European
Community (CE)
Approval
Technical
Assistance
Description
1-1
SIMATIC 505–2557 Installation and Operation Guide
Chapter 1
Description
1.1 Operating
Modes
1-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Asynchronous
Operation
1-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compatability
with Immediate I/O
1-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
100
Ohm, 10 Ohm, 120 Ohm R
TDs, or Millivolt Inputs
1-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital
W
or
d Map
1-3.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 RTD
Input to Digital Conversion
1-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engineering
Units
1-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scale
Units
1-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Effect
of Out-of-Range Input Signals
1-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Resolution 1-7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description
1-2
SIMATIC 505–2557 Installation and Operation Guide
1.1 Operating Modes
The
SIMA
TIC 505–2557 Sixteen Channel RTD Input Module is a member of
Siemens’
s family of I/O modules compatible with the SIMA
TIC 505 series
programmable controllers. The SIMA
TIC 505–2557 is designed to translate
10 Ohm copper
, 100 Ohm platinum and, 120 Ohm nickel RTDs or millivolt
input signals into scaled digital words which are then sent to the
programmable controller (PLC).
The SIMA
TIC 505–2557 RTD Input Module features built–in independent
two, three, or four lead compensation for each RTD input. Support for other
RTD types is available through special request from the factory
. For
technical assistance, contact your Siemens Energy & Automation, Inc.,
distributor or sales office.
The module operates asynchronously with respect to the PLC; a scan of the
PLC and input sampling of the module do not occur at the same time.
Instead, the module will translate all inputs in one module update (20
milliseconds maximum) and store the translated words in a buffer memory
.
The PLC retrieves the stored words from the module buffer memory at the
start of the I/O scan.
The SIMA
TIC 505–2557 has been tested and is compatible with the
Immediate read function of the SIMA
TIC 545 and 555 PLC.
Each of the module’
s 16 channels may be configured to receive either a 100
Ohm platinum RTD or a 120 Ohm nickel RTD or a 10 Ohm copper RTD
input signal (two, three or four wire) or a DC voltage signal ranging from 0
to 100 millivolts. Selection of 10 Ohm, 100 Ohm or 120 Ohm RTDs or
millivolts are made via internal switch and jumper settings.
Asynchronous
Operation
Compatability with
Immediate I/O
100 Ohm, 10 Ohm,
120 Ohm R
TDs, or
Millivolt Inputs
Description
1-3
SIMATIC 505–2557 Installation and Operation Guide
RTD
and/or millivolt signals are translated into a 14–bit digital word. Since
the PLC requires a 16–bit input word, the 14–bit value from the converter is
placed into a 16–bit word for transmittal to the PLC. 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.”
Figure 1-1 Wor
d Input to the PLC fr
om the Module
Digital W
or
d Map
Description
1-4
SIMATIC 505–2557 Installation and Operation Guide
1.2 RTD Input to Digital Conversion
The
following equations may be used to calculate the digital word in decimal
format which will result from a particular RTD input:
RTD Mode, Digital W
ord (WX) = Degrees X 10
Millivolt Mode, Digital W
ord (WX) = Millivolts X 100
As an example, the following figure illustrates the effects of a change in
input level going from 0 degrees to 102.4 degrees in the RTD Input Mode.
Figure 1-2
Example Change Input Level
When data format is selected as SCALE the full temperature range of the
RTD is scaled as an unsigned integer from 0–32000. The following formula
may be used to calculate the scaled integer value:
Scaled Integer = (measured temp – min temp)
÷
(max temp – min temp)
×
32000
For example the scaled integer offset at 0
_
C for a 100
Pt RTD is:
Scaled Integer = 0 – (–199.8)
÷ (849 – (–199.8)) ×
32000 = 6091
Engineering Units
Scale Units
Description
1-5
SIMATIC 505–2557 Installation and Operation Guide
RTD
inputs exceeding 849.8 degrees C for 100 Ohm platinum or 260.0
degrees C for 120 Ohm nickel and 10 Ohm copper will cause the overrange
bit to be set. A maximum temperature of 849.9 degrees C for 100 Ohm
platinum or 260.1 degrees C for 120 Ohm nickel and 10 Ohm copper will be
returned for any positive overrange input.
Similarly an input below –199.8 degrees C for 100 Ohm platinum or –79.8
degrees C for 120 Ohm nickel or –100 degrees C for 10 Ohm copper will
cause the underrange bit to be set.
NOTE:
The SIMA
TIC 505–2557 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 1-3 Ef
fect of V
oltage Input - 100 Ohm Platinum
Figure 1-4 Ef
fect of V
oltage Input - 120 Ohm Nickel
Ef
fect of
Out-of-Range Input
Signals
Description
1-6
SIMATIC 505–2557 Installation and Operation Guide
RTD Input to Digital Conversion (continued)
Figure 1-5 Effect
of V
oltage Input - 10 Ohm Copper
Millivolt inputs exceeding 103.04 millivolts will cause the overrange bit to
be set. A reading of 103.05 millivolts will be returned for any positive
overrange input.
Similarly a millivolt input below 0 millivolts will cause the underrange bit
to be set. A reading of 1 millivolt will be returned for any negative
underrange input.
Figure 1-6 Ef
fect of V
oltage Input - Millivolts
Description
1-7
SIMATIC 505–2557 Installation and Operation Guide
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 1-7
Input Resolution
Resolution
Installation
2-1
SIMATIC 505–2557 Installation and Operation Guide
Chapter 2
Installation
2.1 Installing
and Configuring the Module
2-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Planning
the Installation
2-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calculating
the I/O Base Power Budget
2-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unpacking
the Module
2-2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring
the Module
2-3.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting Temperatur
e or Millivolt Input
2-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting
2 and 3 W
ir
e or 4 W
ir
e Operation
2-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting
10 Ohm R
TD Inputs
2-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting
PLC Login Mode
2-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting
Digital Filtering
2-4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting
Degr
ees Celsius or Fahr
enheit 2-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting
Data Scaling
2-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inserting
the Module Into the I/O Base
2-7.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Wiring
the Input Connectors
2-8.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting
the Shield W
iring 2-11.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking
Module Operation
2-13.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation
2-2
SIMATIC 505–2557 Installation and Operation Guide
2.1 Installing and Configuring the Module
The
installation of the SIMA
TIC 505–2557 Sixteen Channel RTD Input
Module involves the following steps:
1.
Planning the installation
2.
Configuring the module
3.
Inserting the module into the I/O base
4. W
iring the module input connector
5.
Checking module operation
The steps listed above are explained in detail in the following pages.
Planning is the first step in the installation of the module. This involves
calculating the I/O base power budget and routing the input signal wiring to
minimize noise. The following sections discuss these important
considerations.
The SIMA
TIC 505–2557 requires 5 watts of +5 VDC power from the I/O
base. Use this figure to verify that the base power supply capacity is not
exceeded.
Open the shipping carton and remove the special anti–static bag which
contains the module.
!
CAUTION
Handling
Static Sensitive Devices
The components on the SIMA
TIC 505–2557 module printed circuit card can be
damaged by static electricity discharge. T
o prevent this damage, the module is
shipped in a special anti–static bag. T
ake the following precautions before re
-
moving the module from the bag, when opening the module, and when handling
the printed circuit card during configuration.
Discharge any static potential by holding the module in its anti–static bag and
touch the metal chassis of the PLC. During the configuration step, hold the
printed circuit card only by its edges. 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.
Planning the
Installation
Calculating the I/O
Base Power Budget
Unpacking the
Module
Installation
2-3
SIMATIC 505–2557 Installation and Operation Guide
The
SIMA
TIC 505–2557 must be configured for 10 Ohm copper
, 100 Ohm
platinum or 120 Ohm nickel RTDs (2, 3 or 4 wire) 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 100 Ohm platinum, 3
wire RTDs, degrees Centigrade and digital filtering enabled.
Configuring the module is a two step process. Hardware jumpers are
positioned to provide proper gain and lead wire compensation for either 3
wire or 4 wire RTDs. DIP switches are provided to inform the
microprocessor the changes made to the hardware.
Changing the module input channel configuration involves the following
steps:
1.
Selecting temperature or millivolt measurement via DIP switch
2.
Selecting 3 or 4 wire compensation
3.
Selecting 100 Ohm platinum, 120 Ohm nickel or 10 Ohm copper input
mode for each channel
4.
Selecting standard login mode (16WX) or Advanced Operating Mode
5.
Selecting digital filtering or no filtering for the module
6.
Selecting degrees C or F for the module
7.
Selecting Engr units or SCALE units for module
8.
Logging the configuration jumper settings for future reference
Each of these steps is described in the following sections.
Configuring the
Module
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