GSK DA98A - Page 49

DA98A AC Servo Drive Unit User Manual
39
U, V, W of drive unit are short
circuit.
Check the connection.
Grounding is not good. Be grounded correctly.
Motor insulation is damaged. Change the motor.
12 Overcurrent
AC servo drive unit is damaged.
Change the AC servo drive
unit.
Occuring
as
control
power
supply is
powered
on
Circuit board is at fault.
Change the AC servo drive
unit.
Running exceeds the rated torque.
① Check the load.
② Reduce the on-off
frequency.
③ Reduce the torque limit.
④ Change the drive unit
and motor with larger
power ones.
Hold brake is not open. Check the hold brake.
Motor vibrates unstablely.
① Regulate the gain.
② Increase the
acceleration/
deceleration time.
③ Reduce the load inertia.
13 Overload
Occuring
as motor
is
running
① One of the drive unit U, V, W is
broken off.
② The encoder connection is wrong.
Check the connection.
Occuring
as
control
power
supply is
powered
on
Circuit board fault.
Change the AC servo drive
unit.
Brake resistance connection is
broken off.
Connect the wire again.
① Brake transistor is damaged.
② Internal brake resistance is
damaged.
Change the AC servo drive
unit.
Brake loop capacity is not enough.
① Reduce the on-off
frequency.
② Increase the
acceleration/ deceraltion
time constant.
③ Reduce the torque limit.
④ Reduce the load inertia.
⑤ Change the drive unit
and motor with larger
power ones.
14 Brake fault
Occuring
as motor
is
running
Main circuit power voltage is too
high.
Check the main power
supply.