Rockwell Automation T80004 Application Note Field Loop Configuration - Manual (Page 2)

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AN-T80004 Field Loop Configuration
Issue 10 Jun 13 AN-T80004 2
Table of Contents
Analogue Inputs ...................................................................................................................................... 5
Line monitoring ................................................................................................................................... 5
T8431 and T8432 Termination Options ............................................................................................. 5
Current sourcing and sinking, active and passive loops ................................................................ 6
Two, three, four wire connections .................................................................................................. 7
Millivolt inputs ................................................................................................................................. 9
T8433 Termination Options .............................................................................................................. 10
Configuration .................................................................................................................................... 13
Threshold online update .............................................................................................................. 14
Overvoltage Faults ........................................................................................................................... 15
Voltage signals to Analogue Input Modules ..................................................................................... 15
Background: Input impedance test .............................................................................................. 15
Workaround ................................................................................................................................. 15
MTEST Diagnostics ..................................................................................................................... 15
Digital Inputs ......................................................................................................................................... 16
Thresholds ........................................................................................................................................ 16
Line Monitoring and Marshalling for Volt-Free Inputs ....................................................................... 17
T8402 Dual Inputs ........................................................................................................................ 17
T8403 TMR Inputs ....................................................................................................................... 18
T8423 35-120V dc Digital Inputs .................................................................................................. 19
T8424 120V ac Digital Input ......................................................................................................... 20
Non volt-free digital inputs ................................................................................................................ 21
Current controlled inputs .............................................................................................................. 21
Field powered inputs .................................................................................................................... 22
Hall Effect and Open Collector/Open Drain ................................................................................. 23
Zone Interface and Valve Monitor Inputs .............................................................................................. 24
Termination Options ......................................................................................................................... 24
Diagnostic Test Termination ............................................................................................................ 24
Configuration .................................................................................................................................... 25
Frequency/Pulse Inputs ........................................................................................................................ 26
Digital Outputs ...................................................................................................................................... 27
Power Groups .................................................................................................................................. 27
Line Monitoring ................................................................................................................................. 28
No field supply voltage (state 1) ................................................................................................... 28
Output de-energised/off (state 2) ................................................................................................. 28
Open circuit in field wiring or load (state 3) .................................................................................. 28
Output energised/on (state 4) ...................................................................................................... 29