
Hardware
LED Indicators
4 - 30
SKF Multilog O
n-Line System IMx-M
User Manual
Protection Module (PRM)
Figure 4 -
22.
PRM Front
View.
The following table summarizes the behavior of LED indicators on each protection module.
Table 4-11: PRM LED indicators.
LED Indicator
Behavior
Description
STATUS Ready
Red
Internal PRM error
Green slow flash
PRM configured & running
Green fast flash
PRM startup
Circuit Fault
On
Circuit fault
Off
Circuit OK
Trip Multiply
On
Trip multiply active for one or more
channels
Off
No trip multiply
Disarm Config
On
PRM and RLM slot disarmed
Off
PRM and RLM slot armed
ANALOG Ch1 to
Ch16*
Behavior listed in the
order of priority, high
to low (bigger # =
higher priority)
For Combined
Measurement type
CDE, see the separate
table, below.
Off (10)
Channel not configured
The analog channel is not configured.
Yellow fast flash (9)
Ch Ch Not OK/Alert/Danger
The analog channel is disarmed and the
current channel status is any combination
of:
-
Analog ch is not OK, alert or danger
-
Gap is alert and/or danger
- Combined measurement ch is alert
and/or danger
Green fast flash (8)
Ch Ch OK
The analog channel is disarmed and the
current channel status is:
-
Analog ch is OK
-
Gap is OK
-
Combined measurement ch is OK
Toggle between green
/ red / yellow (7)
Channel Circuit Fault (Not OK)
The current channel status is:
-
Analog ch is not OK.
Red slow flash (6)
Channel Danger First Out
One of analog ch, Gap or combined
measurement ch is danger first out.
Current channel status is any
combination of:
- Analog ch is alert and danger
- Gap is alert and danger
- Combined measurement ch is alert and
danger