Honeywell HC900 - Replacing an I;O Module

Revision 6 HC900 Process & Safety Controller User and Installation Manual 187
21 April 2017
I/O Module Indicators
Figure 91 – I/O Module LED indicators
Table 30 – LED Indications on I/O Module
Figure 91 item
LED
LED State/Color
Description
1
Module Status
Off
Solid Red
Blinking Red
Blinking Yellow
Solid green
Blinking Green
No power.
Hardware failure
Diagnostic Code; refer to Table 31
– I/O Module LED Diagnostics.
At least one output is Forced.
Cold start with passing diagnostics
Normal scanning
2
Channel LEDs
(one per input or
output)
Green (On/Off)
For Inputs, indicates On or Off status
of the field input even if Forced to the
opposite state.
For Outputs, indicates On or Off status
of the output including if Forced.