Thermo AC-4000, Руководство по эксплуатации и обслуживанию

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60
Troubleshooting
Line fuse does not blow,
but the motor does not
run.
Motor does not stop
when the speed adjust
potentiometer is full CCW.
Motor runs in the opposite
direction (non-reversing
drives).
1. Speed adjust pot or
speed reference
voltage is set to zero
speed.
2. INHIBIT terminals are
jumpered.
3. S2 is shorted to S1.
4. Drive is in current limit.
5. Drive is not receiving
AC line voltage.
6. Motor is not connected.
MIN SPD setting is too
high.
Motor connections to A1
and A2 are reversed.
1. Increase the speed
adjust pot or speed
reference voltage
etting.
2. Remove jumper from
the INHIBIT terminals.
3. Remove short.
4. Verify that motor is
not jammed. Increase
TORQUE setting if
they are set too low.
See page 43.
5. Apply AC line voltage
to L1 and L2.
6. Connect motor to A1
and A2.
Calibrate MIN SPD. See
page 42.
Reverse connections to
A1 and A2.
Problem Possible
Causes
Suggested
Solutions