User manual

50
Error Possible cause
The power unit cannot be switched
on.
Does the operating display light up on the power unit (2)?
Check the mains voltage (you may also want to check the mains fuse in
the device or the line circuit breaker).
Connected consumer devices do
not work.
Is the voltage set correctly?
Is the polarity correct?
Check the technical data of the consumers.
The “REAR CONTROL” display is
lit. The device can not be operated
via the rotary controls.
Remote control operation is active.
Put the rear “MODE” slider into the “Normal” position.
The “O P PFF” display is lit. The DC output was switched off through the remote control output (16).
Release the connection between contacts 4 and 5.
The output is switched on again.
The output current is limited to 5 A,
although the current settings are
higher.
The front connection is limited to no more than 5 A.
For higher currents, connect the consumer to the rear main output.
The “CC” LED is lit. Constant current operation
The preset current was exceeded. Check power consumption on your con-
sumer and increase the current limitation on your power unit, if applicable.
The “C.V.” display is lit. Constant current operation
The power unit works normally.
The output provides the constant voltage set.
OVP Over-voltage protection
See chapter “Protective Devices”
OtP Over-temperature protection
See chapter “Protective devices”
OLP Overload-protection
See chapter “Protective devices”
Regularly check the technical safety of the device e.g. for damaged housing etc.
Fuses are replacement parts and not covered by the warranty/guarantee.
Repairs other than those described above may only be carried out by an authorised specialist. If
you have any questions concerning the handling of the device, please do no hesitate to contact
our Technical Support.