Table 21 Details Of The I/O Module Diagnostics Display - Honeywell UMC800 Installation And User Manual

Fault detection and troubleclearing
Table 21 describes the status messages that appear on the I/O Module Diagnostics displays in the user
utility and operator interface, as well as the status indications of the POWER LED located on the controller
CPU module.
I/O Module
Diagnostics
(In The User Utility and
Operator Interface)
Menu Status
Item
MODULE GOOD
1 through
MODULE
16
MODULE
HI CJ
1 through
TEMPERATURE
MODULE
16
MODULE
WRONG
1 through
MODULE
MODULE
16
MODULE NO MODULE
1 through
MODULE
16
Release F
4/01

Table 21 Details of the I/O module diagnostics display

Controller
LED on CPU
Possible Cause
POWER High cold junction
LED flashes temperature on AI
10 times module.
POWER The module does
LED flashes not agree with the
module required
11 times
for the control
strategy.
POWER No module found
LED flashes in the slot that
11 times. requires a module
for the control
strategy.
UMC800 Controller Installation and User Guide
Diagnostics and Troubleshooting
Fault Detection and Troubleclearing
Fault Detection / Troubleclearing
Controller Action
Executes normally.
These function
block types do the
following:
AI – sets its output
to failsafe
DI – sets its output
to OFF
These function
block types do the
following:
AI – sets its output
to failsafe
DI – sets its output
to OFF
User Action
1. Improve
ventilation to
rack.
2.
Replace AI
module
1. Replace
module.
2. Check
configuration.
1.
Install the
correct type of
module.
2.
Check
configuration.
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