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Operation
3
3 Operation
Operation
3.1 Pre-operation motor check list
10.
With no power applied, complete the following check list:
•
Check for the correct insulation between individual motor elements, and between
these elements and the earthed motor frame. Disconnect all drive cables before
testing. The motor elements are: armature winding, field winding*, temperature
sensors*, tachogenerator* (* where applicable).
•
Check inside the motor connection box for foreign objects, damaged terminals, etc.
•
Check that motor brushes are in good condition, correctly seated and free to move in
brush boxes. Check for the correct action of brush springs.
•
Check that motor vents are free of any obstruction and that any protective covers
have been removed.
3.2 Operating the drive
REFER TO THE WARNING ON PAGE 8.
11.
For this initial start, disconnect and insulate the (optional) Tacho connection to
Terminal 11
as the drive will be using
Armature Voltage
feedback.
12.
Apply power to the drive
. The drive's Power lamp will light.
13.
If fitted, close the START contact. Operate the RUN switch to turn the motor.
14.
Slowly increase the external speed potentiometer setting to maximum. The motor will
ramp up slowly to about 40 V on the motor armature (to about 10 V for LV60 units).
15.
Is the motor turning in the required direction?
If not, reverse the system by
transposing the A+ and A- motor armature connections.
CAUTION!
When reversing the system:
To prevent damage, do not transpose the motor
armature connections until the motor has stopped rotating.
