Inovance IS620P Series - Er.922: the External Regen Resistor too Small

IS620P User Manual Chapter 6 Troubleshooting
- 155 -
Cause Conrming Method Corrective Action
7. The load inertia is too
large.
•
Perform the inertia auto-tuning
based on section 4.5.1 Inertia
Auto-tuning and calculate the
total inertia of the machine
according to the mechanical
parameters.
•
Check whether the actual load
inertia ratio exceeds 30.
•
Select a large external regen
resistor and set H02-26 (power of
external regen resistor) consistent
with the actual value.
•
Select a large servo drive.
•
If allowed, reduce the load.
•
If allowed, increase the
acceleration/deceleration time.
•
If allowed, increase the motor
running cycle.
8. The speed is
too high, and the
deceleration process
is not completed within
the required time. The
regen resistor is in
continuous deceleration
state.
•
View the speed curve of the
motor for cycle running and
check whether the motor is in
the deceleration station for long
time.
9. The capacity of the
servo drive or regen
resistor is insufcient.
•
View the single cycle speed
curve of the motor and calculate
whether the maximum braking
energy can be absorbed
completely.
10. The servo drive is
faulty.
-
Replace the servo drive with a new
one.
7. Er.922: The external regen resistor too small
Cause:
•
H02-27 (resistance of external regen resistor) is smaller than H02-21 (Allowed minimum
value of regen resistor).
Cause Conrming Method Corrective Action
When an external regen
resistor is used (H02-25
= 1 or 2), the resistance
of the external regen
resistor is smaller than
the minimum value
required by the servo
drive.
•
Measure the resistance of
the external regen resistor
connected between P and C
and check whether it is smaller
than H02-21 (allowed minimum
value of regen resistor).
•
If yes, connect an external regen
resistor matching the servo drive
between P and C and set H02-
27 (resistance of external regen
resistor) to the resistance of the
selected external regen resistor.
•
If not, set H02-27 to the resistance
of the selected external regen
resistor.