Operating the Converter
4-4
512C Series Converter
Basic Setting-Up Procedure
Caution
BEFORE ATTEMPTING TO CONNECT POWER
Controller
Check:-
•
the Main power supply voltage is within the operating range of the controller.
•
the Armature voltage and current ratings are compatible with controller supplied.
•
the Field voltage and current ratings are suitable.
•
All external wiring circuits are correct, i.e:-
Power
connections
Control
connections
Motor connections
Note:
Completely disconnect the controller before point to point checking with a buzzer or when
checking insulation with a megger.
•
For damage to equipment.
•
For loose ends, clippings, drilling swarf etc., lodged in the drive or ancillary equipment.
Motor
•
Inspect the motor, in particular the commutator for any extraneous matter. If an air supply is
available, it is recommended to blow over the commutator.
•
Check the brushes are properly seated and that the brush spring tension is adequate.
•
If possible check that the motor (and vent fan if fitted) can be turned freely by hand.
Preparation
Machine
Check:-
•
That rotation of the motor in either direction will not cause damage.
•
That nobody else is working on another part of the equipment that will be affected by
powering up.
•
That other equipment will not be adversely affected by powering up.
Controller
•
Prevent application of the main power supply by removal of the supply fuses.
•
Disconnect the load from the motor shaft if possible.
•
If there is any doubt as to the integrity of a particular installation, insert a high wattage
resistor (i.e. fire bar elements) in series with the motor armature.
•
If it is possible to rotate the motor, and tachogenerator feedback is in use, check that forward
rotation results in positive tacho feedback, i.e. terminal 1 is positive with respect to terminal
8 or 11.
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