Inovance IS620P Series Manual

5 Troubleshooting
5
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Er.900: DI emergency braking
Cause Conrming Methods Corrective Action
DI function FunIN.34:
EmergencyStop is triggered.
Check whether logic of DI set for
FunIN.34: EmergencyStop is valid.
Check the running mode and clear DI
braking valid signal on the prerequisite of
ensuring safety.
Er.909: Motor overload warning
Cause Conrming Methods Corrective Action
1. Wiring of motor and
encoder is incorrect or poor.
Check wirings between servo drive, servo
motor and encoder according to correct
wiring diagram.
Connect wirings based on correct
wiring diagram.
Prefer to use the cable congured by
Inovance as standard.
When self-made cable is used, make
and connect wirings according to
hardware wiring guidance.
2. The load is too heavy.
The motor keeps output of
effective torque higher than
rated torque for a long time.
Conrm overload characteristic of servo
drive or servo motor.
Check whether average load rate (H0B-12)
is greater than 100.0% for long time.
Replace a large servo drive and
matching servo motor.
Reduce the load and increase
acceleration/deceleration time.
3. Acceleration/deceleration
is too frequent or load inertia
is too large.
Calculate load inertia ratio or perform load
inertia ratio auto-tuning. Then view H08-15
(load inertia ratio).
Conform single running cycle when servo
motor runs in circular.
Increase acceleration/deceleration
time.
4. The gain is improper,
causing too high rigidity.
Observe whether motor vibrates and
generates noise during running.
Adjust the gain.
5. The servo drive or motor
model is set incorrectly.
For IS620P series products, view serial
encoder motor model in H00-05 and servo
drive model in H01-02.
View servo drive nameplate and
set servo drive model (H01-02)
correctly and replace matching servo
motor according to the IS620P User
Manual.
6. Locked-rotor occurs due to
mechanical factors, resulting
in very heavy load during
running.
Check running reference and motor speed
(H0B-00) by using the drive debugging
platform of Inovance or operating panel.
Running reference in the position control
mode: H0B-13 (input reference pulse
counter)
Running reference in speed control: H0B-
01 (speed reference)
Running reference in torque control: H0B-
02 (internal torque reference)
Check running reference in corresponding
mode is not 0 but the motor speed is 0.
Eliminate mechanical factors.
7. The servo drive is faulty.
Power off the servo drive and then power it
on again.
If the fault persists after re-power-on,
replace the servo drive.

Inovance IS620P Series Specifications

General

Brand	Inovance
Model	IS620P Series
Category	Servo Drives
Language	English