Err
40
Eliminate external faults.
Perform motor auto-
tuning.
Increase the acceleration/
deceleration time.
No
Adjust the input voltage to the
normal range.
Yes
No
No
No
V/F control
Remove the sudden load.
Install the braking unit and
braking resistor.
No
Contact the agent or Inovance.
No
Reduce the load.
No
No
Increase the capacity level of the
servo drive.
Yes
Yes
Yes
Yes
Yes
Yes
Check whether the servo drive output circuit is
earthed or short circuited.
Check whether motor auto-tuning
is performed properly.
Check whether the acceleration/
deceleration time is too short.
Check whether the input voltage of the
servo drive is too low.
Check whether a sudden load is added
during deceleration.
Check whether the braking unit and braking
resistor are installed.
Can the load be reduced?
Check whether the fault is eliminated
after increasing the capacity level of the
servo drive.
Err42
Set correct CAN communication
parameters.
No
Wire CAN+ and CAN- correctly.
Yes
Yes
Yes
Secure the CAN communication
cable.
No
Replace with the cable that complies
with the specification.
Yes
No
Contact the agent or
Inovance.
Check whether the CAN communication parameters A2-
00 and A2-01 are set correctly.
Check whether the CAN communication cable is
in good contact.
Check whether CAN+ and CAN- are
connected reversely.
Does the CAN communication cable comply with the
specification? Is it too long, too thin or non-twisted pair?