Commissioning and Testing
After applying the supply voltage, the SCR OM performs an internal self-test.
LED’s 1,3,4 and 5 light up, and the SCR OM can then be activated by pressing the start button, and the outputs
should activate.
If the self-test has not been successfully executed, there could be a fault or a connection error. For details, see
the following section "Troubleshooting".
Troubleshooting
The muting controller is equipped with comprehensive a diagnostics functions. If a fault is present, the fault LED
will flash, together with the LEDs from channel 1 and channel 2. It is possible, under certain circumstances for
both channel LEDs to indicate different errors. From the number of flashes (flashing code), it is possible to
determine which fault has occurred (See following table for flash codes).
Example:
Netz
Power
Kanal 1
Channel1
Kanal 2
Channel2
Störung
Fault
Channel 1 LED flashes 9 times (code 9), Channel 2 LED flashes once (code 1)
Channel 1 LED indicates the fault "Muting lamp interrupted"
Channel 2 LED indicates the fault "Inequality of the two channels".
Tip: If both channel LEDs flash, the code can be more easily read by covering the other LED.
If an error occurs, check the supply voltage between terminals A1+ and A2-. This voltage must not drop
below 21.6 V DC.
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