Rockwell Automation T80004 Application Note Field Loop Configuration User Manual
Field loop configuration, Trusted, Issue record
Trusted
TM
AN-T80004
Issue 10 Jun 13
AN-T80004
1
Application Note
Field Loop Configuration
The Trusted
TM
Input/Output (I/O) modules are designed to monitor field loops for alarm and field cable
fault states. The configuration of field loops differs between modules.
This application note:
•
explains the circuits required to allow line monitoring of field wiring.
•
describes connection and configuration options for different device types, including system and
field powered types, volt-free, current sourcing and sinking and two, three and four wire
devices.
•
suggests options for isolation and protection.
Issue Record
Issue
Number
Date
Modification
1
Feb 07
Initial Issue
2
Aug 07
T8297 connections
3
Dec 07
Circuit options
4
Feb 08
Comments incorporated
5
Jun 08
De-en LM Outputs
6
Sep 08
System cable design
7
Dec 08
Low current loads
8
Feb 10
2,3,4 wire AI,8472 nlthresh
9
Aug 12
Clarifications to DI line monitoring
10
Jun 13
T8403 states 0 and 6 not used