23
Instruction Manual
RGU-10 MT
4�7�3�- TRIP ON CIRCUIT BREAKER FAILURE
When the device trips due to a circuit breaker, the red LED is on continuously, the yellow LED flashes,
and the LCD is backlit red. The display shows a “
MAG
” message, indicating the circuit breaker fault.
Figure 18: Trip on circuit breaker failure�
4�7�4�- REMOTE TRIP
When a trip is forced (input terminals
1-2
, using an external contact) the device is tripped and disabled
and an “
EXT
” message is shown on the display in red and also the LED is on. It has to remain perma-
nently in this situation until the change in status no longer exists. It is not possible to manually reset
or reset using communications.
Figure 19: Remote trip�
When it is remotely reset (input terminals
1-2
) the device is reconnected with the display backlit in
green, LED
ON
in green as in normal status.
In the case of the
RGU-10C MT,
the device can be tripped/rearmed remotely using RS-485 communi-
cations. The device is tripped, as shown by the “
REM
” message shown on the display in red, and the
ON
LED is red. It has to remain permanently in this situation until there is a change in status.
Figure 20: Remote trip through communications�
It is rearmed when the device is rearmed using
RS-485
communications, by opening the connection at
remote input
1-2
or by pressing the reset button. The device is reconnected and the display backlight
turns green again, as does the
ON
LED.
Summary of Contents for RGU-10 MT
Page 1: ...INSTRUCTION MANUAL Electronic earth leakage protection relay RGU 10 MT Serie M98228501 03 21A...
Page 2: ...2 RGU 10 MT Instruction Manual...
Page 38: ...38 RGU 10 MT Instruction Manual 12 CE CERTIFICATE...
Page 39: ...39 Instruction Manual RGU 10 MT...
Page 40: ...40 RGU 10 MT Instruction Manual...