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• If the field wiring must cross ac or power cables, ensure that they
cross at right angles.
• To limit the pickup of electrical noise, keep signal wires as far from
power and load lines as possible.
• Ground the shield drain wire at only one end of the cable. The
preferred location is at the shield connections at the ControlLogix
chassis. (Refer to IEEE Std. 518, Section 6.4.2.7 or contact your sensor
manufacturer for additional details.)
• Tighten screw terminals with care. Excessive tightening can strip a
screw.
• Follow system grounding and wiring guidelines found in your
ControlLogix Installation and Operation Manual.
Preparing and Wiring the Cables
To prepare and connect cable leads and drain wires, follow these steps:
Signal Wires
Drain Wire
Signal Wires
Cable
(Remove foil shield and drain wire
from sensor-end of the cable.)
(At the module-end of the cable, extract
the drain wire but remove the foil shield.)
1. At each end of the cable, strip some casing to expose individual
wires.
2. Trim signal wires to 5-inch lengths beyond the cable casing. Strip
about 3/16 inch (4.76 mm) of insulation to expose the ends of the wires.
3. At the module-end of the cables (see figure above):
- extract the drain wire and signal wires
- remove the foil shield
- bundle the input cables with a cable strap
4. Connect pairs of drain wires together, Channels 0 and 1, Channels 2
and 3, Channels 4 and 5, Channels 6 and 7. Keep drain wires as short as
possible.
5. Connect the drain wires to the grounding lug on the PLC chassis.
6. Connect the signal wires of each channel to the terminal block.
Important: Only after verifying that your connections are correct for
each channel, trim the lengths to keep them short. Avoid cutting leads
too short.
7. At the source-end of cables from devices:
- remove the drain wire and foil shield
- apply shrink wrap as an option
- connect to mV devices keeping the leads short
- Catalog Number: 1756sc-CTR8 1
- Important Notes 3
- Terms & 6
- Abbreviations You 6
- Should Know 6
- Preface vii 7
- Table of Contents 9
- Module Overview 11
- Chapter 1 11
- System Overview 12
- 4 ControlLogix 14
- Counter Module 14
- Electrostatic 15
- Requirements 15
- Module Installation 16
- Wiring Your Module 19
- Wiring Single-ended 21
- Wiring Bi 22
- Directional or 22
- Quadrature Inputs 22
- Operation Within the 24
- ControlLogix System 24
- Chapter 3 24
- Requested Packet 26
- Interval (RPI) 26
- Modules in a 26
- Remote Chassis 26
- Listen-Only Mode 27
- Multiple Owners of 27
- Input Modules 27
- Configuration 28
- Changes in an 28
- Input Module with 28
- Multiple Owners 28
- Programming Your Module 30
- Chapter 4 30
- 22 ControlLogix 32
- 24 ControlLogix 34
- Configuring module 35
- Configuration Tags 35
- Data Tags 36
- Status Tags 36
- Configuration, Data 38
- Chapter 5 38
- Channel Specific 39
- Settings 39
- 30 ControlLogix 40
- 32 ControlLogix 42
- Output Tags 44
- Input Tags 44
- CST DINT 46
- Programming Examples 48
- Chapter 6 48
- Set Attribute All message: 50
- Using the gate 51
- 42 ControlLogix 52
- Installation 53
- Recommendations 53
- 1 2 3 4 NA 54
- Troubleshooting 56
- Chapter 7 56
- Using RSLogix 5000 57
- Your Module 57
- Configuration Errors 58
- Maintaining Your Module 60
- And Ensuring Safety 60
- Chapter 8 60
- Module Specifications 64
- Appendix A 64
- Environmental 65
- Specifications 65
- Input Specifications 65
- AccuracyAccuracy 66
- Accuracy 66
- Appendix B 68
- 60 ControlLogix 70
- 62 ControlLogix 72
- Getting Technical 73
- Assistance 73
- Declaration of 73
- Conformity 73
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