5 Troubleshooting
5
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Er.105: Internal program abnormal
Cause Conrming Methods Corrective Action
1. An EEPROM fault
occurs.
Check causes according to the method
of Er.101.
Restore default setting (H02-31 = 1), and
power on the servo drive again.
2. The servo drive is
faulty.
The fault persists after you power on
servo drive several times.
Replace the servo drive.
Er.108: Parameter storage fault
Cause Conrming Methods Corrective Action
1. EEPROM writing is abnormal.
Modify a parameter, power on
servo drive again, and check
whether modication is saved.
If modication is not saved and the fault
persists after servo drive is powered on
several times, replace the servo drive.
2. EEPROM reading is abnormal.
Er.120: Product model matching fault
Cause Conrming Methods Corrective Action
1. Product (motor or
servo drive) SN does
not exist.
View servo drive and servo motor nameplates
to check that the equipment you are using is
IS620P series servo drive and 20-bit servo
motor (-U2***) of Inovance. Meanwhile, check
whether H00-00 (Motor SN) is 14000.
Servo motor SN does not exist. If you
use IS620P series servo drive and 20-
bit servo motor (-U2***) of Inovance,
ensure that H00-00 = 14000.
View servo drive SN (H01-02) and check
whether servo drive SN exists.
Servo drive SN does not exist. Set
servo drive SN correctly.
Power class of servo
motor and servo drive
does not match.
Check whether servo drive SN (H01-02) and
serial encoder motor SN (H00-05) match.
Replace unmatched product.
Er.121: S-ON signal invalid
Cause Conrming Methods Corrective Action
When servo drive is enabled
internally, external S-ON
signal is valid.
Check whether auxiliary functions (H0D-02,
H0D-03, H0D-12) are used and whether DI
function FunIN.1: S-ON is ON.
Set DI function FunIN.1: S-ON (both
hardware DI and virtual DI) to OFF.
Er.122: Product matching fault in absolute position mode
Cause Conrming Methods Corrective Action
The motor in absolute position
mode does not match or motor
SN is set incorrectly.
Check whether motor nameplate is multi-turn
absolute encoder motor.
Check whether H00-00 (motor SN) is correct.
Set H00-00 correctly or replace
matching motor according to
motor nameplate.
Er.130: Different DIs allocated with the same function
Cause Conrming Methods Corrective Action
1. The same function
is allocated to different
DIs.
Check whether parameters in
groups H03 (H03-02 to H03-
20) and H17 (H17-00 to H17-
30) are set for the same non-
zero DI function.
Re-allocate the parameters that have been allocated
with the same non-zero DI function with different DI
functions. Then re-connect control power to make
modication take effect. Or set the S-ON signal to OFF
and give the reset signal to make modication take
effect.