Rockwell Automation 1771-IFF/A,D17716.5.116 FAST ANALOG INPUT MODULE - Manual (Page 25)

2–9 Troubleshooting Your Input Module
Publication 1771Ć6.5.116 - July 1996
Testing for Input Channel Functionality
To test the functionality of an input channel:
1. Remove the input wiring from the field wiring arm.
!
ATTENTION: Remove power from the 1771 I/O
chassis backplane and field wiring arm before
removing or installing input wiring.
•
Failure to remove power from the backplane or
wiring arm could cause module damage, degradation
of performance, or injury.
•
Failure to remove power from the backplane could
cause injury or equipment damage due to possible
unexpected operation.
2. Connect a battery (or other voltage source) across the input
terminals. When the 4-20mA range is selected, the voltage source
must not exceed 1-5V.
!
ATTENTION: The voltage source must be within the
selected voltage range. If the source voltage is greater
than the selected voltage range of the input, module
damage will result.
3. Monitor the input data table for predictable values.(values relative
to the input source voltage).
In this chapter you learned how to interpret the indicator lights, and
troubleshoot your input module.
Chapter Summary