Inovance ISMG2-57D20CD-A3 F Series User Manual

5 Troubleshooting
5
- 61 -
Cause Conrming Methods Corrective Action
6. Input voltage of main circuit
exceeds specication.
Check whether input voltage of main
circuit on servo drive side satises
the following specication:
220 V AC drive:
Valid value: 220 to 240 V
Allowed error: -10% to 10% (198 to
264 V)
380V AC drive:
Valid value: 380 to 480 V
Allowed error: -10% to 10% (342 to
528 V)
Replace power supply or adjust power
voltage according to specication on
the left.
7. The load inertia is too large.
Perform inertia auto-tuning according
to the IS650P User Manual or
calculate total inertia of machine
according to mechanical parameters.
Check whether actual load inertia
ratio exceeds 30.
Select a large external regenerative
resistor and set H02-26 (power
of external regenerative resistor)
consistent with actual value.
Select a large servo drive.
If allowed, reduce the load.
If allowed, increase acceleration/
deceleration time.
If allowed, increase motor running
cycle.
8. Speed is too high, and
deceleration is not completed
within required time. The
regenerative resistor is in
continuous deceleration status.
View speed curve of motor for cycle
running and check whether motor
is in deceleration status for a long
period.
9. Capacity of servo drive
or regenerative resistor is
insufcient.
View single cycle speed curve
of motor and calculate whether
maximum braking energy can be
absorbed completely.
10. The servo drive is faulty. - Replace a new servo drive.
Er.922: Resistance of external braking resistor too small
Cause Conrming Methods Corrective Action
When an external
regenerative resistor is used
(H02-25 = 1 or 2), resistance
of the external regenerative
resistor is smaller than
minimum value required by
servo drive.
Measure resistance of the external
regenerative resistor between
P
and
C and check whether it is smaller
than H02-21 (allowed minimum
value of regenerative resistor).
If yes, connect an external regenerative
resistor matching servo drive between
P
and C and set H02-27 (resistance of
external regenerative resistor) to resistance
of the selected regenerative resistor.
If not, set H02-27 to resistance of the
selected regenerative resistor.
Er.939: Motor power cable breaking
Cause Conrming Methods Corrective Action
Motor power
cable breaking
Check whether difference between H0B-24 (phase current
valid value) and H0B-02 (internal torque reference)
reaches over 500%. Meanwhile, H0B-00 (actual motor
speed) is smaller than one fourth of rated motor speed.
Check the motor power cable
connection and reconnect wirings. If
necessary, replace a new cable.

Inovance ISMG2-57D20CD-A3 F Series Specifications

General

Brand	Inovance
Model	ISMG2-57D20CD-A3 F Series
Category	Servo Drives
Language	English