9
4.5
Outputs
4.5.1
Alarm relay
The alarm relay output is a switching output in the form of a changeover contact. The purpose of the
relay is to electrically isolate the output from the internal device circuit. The alarm relay works
according to the closed current principle. If a fault is detected, the alarm relay drops out.
4.5.2
Warning relay
The warning relay output is a switching output in the form of a changeover contact. It is only available
in the extended configuration. The purpose of the relay is to electrically isolate the output from the
internal device circuit. The warning relay works according to the closed-current principle. If a warning
is detected, the warning relay drops out.
4.5.3
Diagnostics port
The diagnostics port is used to provide serial data.
4.5.4
Duo LED
The installed LED indicates the current status of the tripping device (see blink code).
In fault-free operation, the LED shows a steady green light.
1st blinking
sequence
(LED red)
2nd blinking
sequence
(LED orange)
Description
1
1
Motor temperature:
Static switch-off, permissible winding temperature exceeded
1
4
Motor temperature:
Sensor input detected an open or short circuit
2
1
Phase monitoring:
Incorrect phase sequence
2
2
Phase monitoring:
Phase failure/asymmetry
2
3
Phase monitoring:
Undervoltage/overvoltage
3
1
Temperature input 1:
Static switch-off/warning, permissible temperature exceeded
3
2
Temperature input 2:
Static switch-off/warning, permissible temperature exceeded
3
4
Temperature input 1:
Sensor input detected an open or short circuit
3
5
Temperature input 2:
Sensor input detected an open or short circuit
4
1
Leakage 1:
Static switch-off/warning, permissible limit exceeded/undershot
4
3
Leakage 2:
Static switch-off/warning, permissible limit exceeded/undershot
5
1
General:
Internal fault
5
2
General:
Supply voltage too low
5
3
General:
Current loop, static switch-off/warning, permissible
limit exceeded/undershot
5
4
General:
Current loop, sensor fault detected, closed current undershot
5
5
General:
Switching frequency, static warning, permissible switches exceeded
