Inovance IS620P Series - Er.201: Overcurrent 2

Chapter 6 Troubleshooting IS620P User Manual
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12. Er.201: Overcurrent 2
Cause:
•
The servo drive detects overcurrent on hardware.
Cause Conrming Method Corrective Action
1. The reference is input
and the servo drive is
started simultaneously.
Or the reference is input
too early.
•
Check whether the reference is
input before the operation panel
displays "Rdy".
•
Normally, after the operation
panel displays "Rdy", set the
servo enabled signal (S-ON) to
ON and then input the reference.
•
If allowed, add the reference
lter time constant or increase
the acceleration/deceleration
time.
2. The regen resistor
is too small or short
circuited.
•
If internal regen resistor is used
(H02-25 = 0), check whether
P and D are connected with
a cable reliably. If yes, measure
the resistance between C and
D.
•
If external regen resistor is used
(H02-25 = 1/2), measure the
resistance between P and C.
•
For the regen resistor
specication, refer to section 1.4
Regen Resistor Specications..
•
If internal regen resistor is used
and the resistance is 0, use
external regen resistor (H02-
25 = 1/2) and remove the cable
between P and D.
•
Select the external regen resistor
of the same resistance and
power as internal regen resistor.
•
If external regen resistor is used
and the resistance is smaller
than H02-21 (allowed minimum
value of regen resistor), connect
a new regen resistor between
P and C by referring the regen
resistor specication in section
1.4.
•
Make H02-26 (power of external
regen resistor) and H02-27
(resistance of external regen
resistor) consistent with the
used external regen resistor
specication.
3. The motor cables are
in poor contact.
•
Check whether the power
cables of the servo drive and
the motor UVW cables are
loose.
Fasten the cables that become
loose or are disconnected.
4. The motor cables are
grounded.
•
After ensure the power cables
of the servo drive and the
motor cables are connected
securely, measure the insulation
resistance between the UVW of
the servo drive and the ground
cable (PE) and check whether
the insulation resistance is MΩ-
level.
Replace the motor if the insulation
is poor.