Siemens 505-2557 user guide
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
result in death or serious injury
DANGER is limited to the most extreme situations.
W
ARNING indicates a potentially hazardous situation that, if not avoided, could
result in death or serious injury, and/or property damage.
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.
indicates an imminently hazardous situation that, if not avoided, will
.
WARNING
!
CAUTION
!
.
Copyright
1998 by Siemens Energy & Automation, Inc.
All Rights Reserved — Printed in USA
Reproduction,
Siemens Energy &
reserved.
Since Siemens Energy & Automation, Inc., does not possess full access to data concerning all of the uses and applications of
customer’
of others which may result from our assistance.
transmission, or use of this document or contents is not permitted without express consent of
Automation, Inc. All rights, including rights created by patent grant or registration of a utility model or design, are
s products, we do not assume responsibility either for customer product design or for any infringements of patents or rights
MANUAL PUBLICA
TION HISTOR
Y
SIMATIC 505–2557 R
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
TD Input Module Installation and Operation Guide
05/98
Original Issue (2807060–0001)
LIST
OF EFFECTIVE P
Pages Description Pages Description
Cover/Copyright Original
History/Effective
iii —viii
1-1 — 1-7
2-1 — 2-13 Original
3-1 — 3-31 Original
A-1 — A-1
B-1 — B-2
C-1 — C-1
Pages
AGES
Original
Original
Original
Original
Original
Original
Preface
Chapter 1 Description
Contents
1.1 Operating
Asynchronous
Compatability
100
Ohm, 10 Ohm, 120 Ohm R
Digital Wor
1.2 RTD
Input to Digital Conversion
Engineering
Scale
Effect
Resolution 1-7
Modes
Operation
with Immediate I/O
d Map
Units
Units
of Out-of-Range Input Signals
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Chapter 2 Installation
2.1 Installing
Planning
Calculating
Unpacking
Configuring
Selecting Temperatur
Selecting
Selecting
Selecting
Selecting
Selecting
Selecting
Inserting
and Configuring the Module
the Installation
the I/O Base Power Budget
the Module
the Module
2 and 3 Wire or 4 Wire Operation
10 Ohm R
PLC Login Mode
Digital Filtering
Degr
ees Celsius or Fahr
Data Scaling
the Module Into the I/O Base
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TDs, or Millivolt Inputs
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e or Millivolt Input
TD Inputs
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
enheit 2-5.
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1-2.
1-2.
1-2.
1-2.
1-3.
1-4.
1-4.
1-4.
1-5.
2-2.
2-2.
2-2.
2-2.
2-3.
2-4.
2-4.
2-4.
2-4.
2-4.
2-5.
2-7.
2.2 Wiring
the Input Connectors
Connecting
Checking
the Shield W
Module Operation
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iring 2-11.
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Chapter 3 Advanced Function Programming
3.1 Advanced
Introduction 3-2
Overview
Setting
Logging
Softwar
of the Advanced Functions
the Module Configuration Jumper
the Module in the Contr
e Functions
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oller I/O Configuration Memory
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Contents iii
2-8.
2-13.
3-2.
3-2.
3-3.
3-4.
3.2 Internal
Description
Input
Registers
Output
Control
Inputs 3-8
Outputs 3-10
Loading
Register Structur
of the I/O Registers
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Registers
Registers
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Data into the SIMA
es 3-5.
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TIC 505–2557 Module 3-11.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-5.
3-5.
3-7.
3-8.
3.3 Loading
3.4 Timing
Timing
3.5 Additional
Default Values 3-19.
Degrees
Scaling 3-20
Alarm
Digital
Averaging 3-22
Peak
Peak
Flag
Advanced
3.6 Troubleshooting 3-25
Troubleshooting
3.7 I/O
3.8 V
3.9 Addressing Worksheet 3-30.
or K Memory Configuration T
Pr
ograms into the I/O Module
Considerations
Constraints When Using Advanced Functions
Infor
mation about Each Function
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Centigrade or Degr
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Setpoints
Filtering
and V
and V
Bits
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Register Quick Refer
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alley Hold
alley Hold Reset
Function Pr
the System
ecedence 3-24.
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ees Fahr
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ence 3-27.
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ables 3-28.
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enheit 3-20.
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3-15.
3-18.
3-18.
3-19.
3-20.
3-21.
3-22.
3-23.
3-23.
3-25.
3.10 Items
Unique to the SIMA
TIC 505–2557 Module
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3-31.
Appendix A Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Appendix B Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Appendix C Jumper Settings Log Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
iv Contents
List of Figures
1-1Word
1-2Example
1-3Effectof V
1-4Effect
1-5Effect
1-6Effect
1-7Input
2-1Factory
2-2Configuration
2-3Copper Wir
2-4Press
2-5Wiring
2-6Wiring
2-7Cable
2-8Example
3-1Configuring
3-2SIMATIC
3-3Input
3-4Discrete
3-5Data T
3-6Data
3-7Sample
3-8The
3-9Identifying
3-10The
3-11Enabling
3-12Loading
3-13Startup
3-14Peak/Valley T
3-15Peak/Valley
3-16Mapping
3-17I/O
3-18Open R
A-1Troubleshooting
C-1Jumper
Input to the PLC fr
Change Input Level
oltage Input - 100 Ohm Platinum
of V
oltage Input - 120 Ohm Nickel
of V
oltage Input - 10 Ohm Copper
of V
oltage Input - Millivolts
Resolution
Configuration Jumper Settings
Jumper Locations
e T
able at 25 Degr
In W
iring Connector
Diagram for 2, 3, or 4 Wire R
Diagram for Millivolt Measur
Gr
ounding 2-12.
I/O Configuration Chart
the SIMA
505–2557 I/O Configuration Chart
Flag Bits
Handshake Inputs
ransfer Contr
Loading Pr
Low and High Alar
Module_Ready Bit
the Data Being T
Data_Ready Bit
the Functions Loaded
the Enable Bits
Relay Ladder Logic
ruth T
Reset T
Bit Position to Channel Number
Register Quick Refer
TD Status Bits
Settings Log Sheet
om the Module
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ees Celsius
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TD 2-10.
ements 2-11.
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TIC 505–2557 Module for Advanced Featur
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ol Bits
ocess 3-11.
able 3-22.
Matrix
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m Setpoints
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ransferred 3-13.
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ruth T
able 3-23.
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ence 3-27.
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es 3-3.
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1-3.
1-4.
1-5.
1-5.
1-6.
1-6.
1-7.
2-5.
2-6.
2-8.
2-9.
2-13.
3-4.
3-6.
3-9.
3-10.
3-12.
3-12
3-13.
3-14.
3-14.
3-16.
3-23.
3-31.
A-1.
C-1.
Contents v
List
of T
ables
3-1 Input
3-2 Input
3-3 Peak/Valley
3-4 Output
3-5 Function
3-6 Data
3-7 Timing
3-8 Default
3-9 Default
3-10 Troubleshooting
B-1 Specifications B-1
and Output Register Of
Channel Data
Hold Input W
Data Registers
Enable Bits
Identification Bits
Over
head for Functions Enabled
Function V
Function V
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ords 3-6.
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alues 3-19.
alues for SIMA
Flow Diagram
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fsets 3-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TIC 505–2557 3-19.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-5.
3-7.
3-8.
3-10.
3-18.
3-26.
vi Contents
Preface
This
Installation and Operation Guide provides installation and operation
TIC
instructions for the SIMA
Input Module for SIMA
are familiar with the operation of SIMA
controllers. Refer to the appropriate SIMA
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.
TIC 505 programmable controllers. W
505–2557 Sixteen Channel Isolated RTD
e assume you
TIC 505 series programmable
TIC user documentation for
Figur
e 1
SIMA
TIC 505–2557 16-Channel R
SIMATIC 505–2557 Installation and Operation Guide
505–2557
TD Input Module
Preface
vii
Related Manuals
Additional
manuals that have relevant information include the following:
Agency Standar
Agency Appr
ovals
ds
• SIMA
• SIMA
TIC 545/555/575 System Manual
(PPX:505–8201–x).
TIC 545/555/575 Programming Reference User Manual
(PPX:505–8204–x).
• SIMA
TIC 505 TISOFT2t 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 505t 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
Requirements and T
131–2, Programmable Controllers, Part 2: Equipment
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)
European Community (CE) Approval
Technical Assistance
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
Group in Johnson City
contact them by e-mail at
, T
ennessee at 1-800-942-5697 or 423-461-2522, or
simatic.hotline@sea.siemens.com
technical assistance outside the United States, call 49-91
echnical Services
. For
1-895-7000.
viii
Preface
SIMATIC 505–2557 Installation and Operation Guide
Chapter 1
Description
1.1 Operating
Asynchronous
Compatability
100
Ohm, 10 Ohm, 120 Ohm R
Digital Wor
1.2 RTD
Input to Digital Conversion
Engineering
Scale
Units
Effect
of Out-of-Range Input Signals
Resolution 1-7
Modes
d Map
Units
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation
with Immediate I/O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TDs, or Millivolt Inputs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2.
1-2.
1-2.
1-2.
1-3.
1-4.
1-4.
1-4.
1-5.
SIMATIC 505–2557 Installation and Operation Guide
Description
1-1
1.1 Operating Modes
The
SIMA
Siemens’
programmable controllers. The SIMA
10 Ohm copper
input signals into scaled digital words which are then sent to the
programmable controller (PLC).
TIC 505–2557 Sixteen Channel RTD Input Module is a member of
s family of I/O modules compatible with the SIMA
TIC 505 series
TIC 505–2557 is designed to translate
, 100 Ohm platinum and, 120 Ohm nickel RTDs or millivolt
Asynchronous Operation
Compatability with Immediate I/O
100 Ohm, 10 Ohm,
120 Ohm R
TDs, or
Millivolt Inputs
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
Immediate read function of the SIMA
Each of the module’
TIC 505–2557 has been tested and is compatible with the
TIC 545 and 555 PLC.
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.
.
1-2
Description
SIMATIC 505–2557 Installation and Operation Guide
Digital Word Map
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
SIMATIC 505–2557 Installation and Operation Guide
Description
1-3
1.2 RTD Input to Digital Conversion
Engineering Units
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
Millivolt Mode, Digital W
ord (WX) = Degrees X 10
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.
Scale Units
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
1-4
Description
SIMATIC 505–2557 Installation and Operation Guide
Ef
fect of
Out-of-Range Input
Signals
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
SIMATIC 505–2557 Installation and Operation Guide
Description
1-5
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.
1-6
Description
Figure 1-6 Ef
fect of V
oltage Input - Millivolts
SIMATIC 505–2557 Installation and Operation Guide
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 1-7
Input Resolution
SIMATIC 505–2557 Installation and Operation Guide
Description
1-7
Chapter 2
Installation
2.1 Installing
Planning
Calculating
Unpacking
Configuring
Selecting Temperatur
Selecting
Selecting
Selecting
Selecting
Selecting
Selecting
Inserting
2.2 Wiring
the Input Connectors
Connecting
Checking
and Configuring the Module
the Installation
the I/O Base Power Budget
the Module
the Module
2 and 3 Wire or 4 Wire Operation
10 Ohm R
PLC Login Mode
Digital Filtering
Degr
ees Celsius or Fahr
Data Scaling
the Module Into the I/O Base
the Shield W
Module Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
e or Millivolt Input
TD Inputs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
enheit 2-5.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iring 2-11.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2.
2-2.
2-2.
2-2.
2-3.
2-4.
2-4.
2-4.
2-4.
2-4.
2-5.
2-7.
2-8.
2-13.
SIMATIC 505–2557 Installation and Operation Guide
Installation
2-1
2.1 Installing and Configuring the Module
The
installation of the SIMA
Module involves the following steps:
1.
Planning the installation
2.
Configuring the module
3.
Inserting the module into the I/O base
TIC 505–2557 Sixteen Channel RTD Input
Planning the
Installation
Calculating the I/O Base Power Budget
Unpacking the Module
The components on the SIMA
damaged by static electricity discharge. T
shipped in a special anti–static bag. T
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.
4. W
5.
iring the module input connector
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
TIC 505–2557 module printed circuit card can be
o prevent this damage, the module is
ake the following precautions before re
-
2-2
Installation
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.
SIMATIC 505–2557 Installation and Operation Guide
Configuring the Module
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.
SIMATIC 505–2557 Installation and Operation Guide
Installation
2-3
Installing and Configuring the Module (continued)
Selecting
Temperatur
e or
Millivolt Input
Selecting 2 and 3
Wir
e or 4 W
ire
Operation
No
hardware changes are required for millivolt inputs. T
o select millivolt
input mode for an input turn OFF the M and L switch for the input channel.
(See Figure 2-2.) T
o select a particular RTD probe for each channel
configure the M and L switch.
ML
0 0 Millivolt
NOTE:
0110
1 0 100
1 1 120
Each channel contains a jumper to select between 2, 3 and 4 wire
Cu
Pt
Ni
RTD elements. (See Figure 2-2, 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.
As shipped the module is ready to accept 2 and 3 wire RTDs. T
o configure
an input channel for 4 wire operation requires the following steps:
1.
Remove the 3 wire select jumper JP68–JP83 for the appropriate input
channel and store on a single pin.
Selecting 10 Ohm
R
TD Inputs
Selecting PLC Login Mode
Selecting Digital Filtering
2.
Move 2 input jumpers/channel to the 4 wire position. For example: T
o
configure Channel 1, move JP1 and JP2 to the 4 wire position.
If a 10 Ohm RTD is selected the gain of the input amplifier must be
increased to process the smaller signal levels. (See Figure 2-2.) JP49–JP64
are the amplifier gain select jumpers for Channels 1–16. No jumper changes
are required to select 100 or 120 RTD.
Locate JP67 on the printed circuit board to select PLC Login Mode
(See Figure 2-2 ). Standard login is 16 WX registers in the PLC. Advanced
Operating Mode logs in as 16 X, 16 Y, 32 WX and 32 WY registers. Consult
the Siemens 255x Sixteen Channel Advanced Function Programming
Reference Manual part #62–177, if the advanced operating mode is to be
selected.
Locate the Digital Filtering Jumper JP65 (See Figure 2-2). T
o enable digital
filtering, set the jumper in the ENABLED position. Since many analog
input signals contain noise, Siemens recommends using digital filtering
unless maximum response time is required.
2-4
Installation
SIMATIC 505–2557 Installation and Operation Guide
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