ABB UNITROL 1020 - Alarms and Fault Messages

Chapter 6 - Operation 
106 3BHS335648 E82 UNITROL 1020 User Manual
6.3.10 Alarms and Fault Messages
An event triggers the Alarm/Trip state of the SCP. The Alarm/Trip state is indicated with a
red LED. An event message appears on the screen every few seconds.
Operating
Resulting Display
ALARM/TRIP in REMOTE mode
The fault display periodically switches from the indication
view to the alarm/trip view and back to normal view.
It is still possible to navigate in the MENU (click the EXIT
button) but the Alarm/Trip state will resume after 10
seconds.
The blinking display can be disabled by changing the
panel to local control.
Alarms/trip can be cleared in the parameter/signal group
commands.
Alarm has higher priority than Limiter, meaning that there
is a moving “A” letter in the running symbol even if there is
an active limiter.
Example: “ALM/TRIP 12” = 0 +4 +8 (see table below)
Syntax meaning: Both External Alarm and Modbus
Communication Alarms active.
ALM/TRIP 1
Active Alarm
ALM/TRIP
REM A
12:52
EXIT
ALM/TRIP 2
Active Trip
ALM/TRIP
REM A
12:53
EXIT
The following Alarm/Trip numbers can be monitored from the panel:
Alarm or Trip Nr.
Description
0
None
+1
SW Alarm active
+2
FCB Alarm active
+4
External Alarm active
+8
Modbus Communication Alarm active
+16
Diode Alarm active (requires RDM SW)
+32
Diode Trip active (requires RDM SW)
+64
Supervision Alarm active (requires Double Channel SW)
+128
Supervision Trip active (requires Double Channel SW)
+256
DCH SwitchOver active (requires Double Channel SW)
A defective unit should be first reported to ABB in order to send back the unit after
authorization. For contact information, refer to Chapter 1.5 Manufacturer’s Address.