Problem possible cause suggested solution – LEESON FHP Series NEMA 4x Variable Speed Drive User Manual

Page 56

3. Disable, then re-

enable the drive.

4. Ensure that

ENABLE (EN) and
COM terminals are
properly connected.

5. Verify that motor is

not jammed.
Increase TQLIM
setting if it is set
too low (page 34).

6. Apply AC line

voltage to L1 and
L2.

7. Connect motor to

drive outputs U, V
and W.

1. Calibrate MAX SPD

trimpot (page 33).

Internal line fuse does
not blow, but the motor
does not run (cont.)

Motor runs too slow or
too fast at set speed

3. Drive is “tripped” off

or has gone into
thermal overload.

4. Drive has been

disabled.

5. Drive is in current

limit.

6. Drive is not receiving

AC voltage input.

7. Motor is not

connected.

1. MAX SPD trimpot is

not calibrated
correctly.

Problem

Possible

Cause

Suggested

Solution