8 Trouble Shooting
Product Manual, Control Cabinet IRC5P 3HNA009834-001 en Rev.06 193
8.4 Trouble Shooting Instructions per Unit
8.4.2 Trouble Shooting Power Supply, PDB
Overview This section details how to trouble shoot the electrical power supply board (Power
Distribution Board, PDB) in the controller.
Procedure
Step Action Comment
1 Check the LED indicators on the power supply
unit.
For description of the LED indicators,
see ‘Power Distribution Board, PDB’ in
‘Unit Description, IRC5P’.
2 Disconnect the output connector of the power
supply unit.
3 Measure the output voltage of the unit. If no voltage, or an incorrect voltage is
detected, proceed with next step.
4 Measure the input voltage. If the input voltage is correct, the power
supply unit may be faulty.
5 If required, disconnect the loads from the power
supply unit, one by one, to eliminate any
overload.
6 If the power supply unit is found faulty, replace
it, and verify that the fault has been fixed.
How to replace the unit is detailed in
chapter ’Repair’ on page 129..
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