CD Automation srl
CD3200-1PH from 15A to 110A
User’s Manual
23
9
Led status and Alarms
9.1
LED Status Table
In front of the thyristor unit there are LED that indicates the state of the Electronic cards:
LED
For All size
STATUS DESCRIPTION
The power supply is not connected or fault on the electronic board
Aux
The power supply is not connected and the Electronic board is OK
OFF Condition (Load IS NOT Powered)
ON
ON Condition (Load IS Powered)
SCR OK
SCR short circuit
SC
No External Enable (see par. 11.4)
Load OK
HB
Load Fault
= OFF
= ON
= Flashing
9.2
Not Critical Alarm
The Not Critical Alarm, doesn’t stop the thyristor unit.
When one of these Not Critical Alarm is active, the HB relay change status (see par. 11.5)
9.2.1
SCR Short Circuit (only with the HB option)
This alarm is active when the thyristor unit read the output current in absence of the input signal. This is
possible if there are a short circuit on the thyristor or if there are a wrong wiring of the load.
When the problem is solved is necessary use the digital input: “Reset”
(Terminals 3-4)