64
Fault
code
Fault type
Possible fault cause
Solutions
Er. FbL
Check the brake
reliability of
brake
mechanical
Brake performance of brake
mechanical decline
Check the mechanical spring, change brake pads
Er.oSP Overspeed
fault
Encoder disconnection
Check encoder wiring
The encoder parameters are set
incorrectly
Set parameters correctly
Overspeed threshold setting is too
small
Change the overspeed threshold
Er.oFL
Load loss fault
Manual operating error or wire-break
Avoid the bottom collision caused by misoperation,
or check whether the wire rope is broken
Er. Fbr
Brake contactor
fault
Brake contactor damage
Replace the contactor
Feedback contact wiring fault
Check the feedback contact wiring
Feedback contact of contactor damage
Check the contact of feedback contact
MV600L will conduct special handling on the fault that will not affect the drive’s control motor according to the
customer demand, the special handling includes ordering the drive to immediately decelerate to stop when
certain faults are detected. The fault types meeting this function are as follows: Er.IrF, Er.oL2, Er.PST, Er.dEv,
Er.oFL. For some other faults, direct stopping or free stopping can be determined according to the relevant
options.
All the possible alarm types for MV600L are summarized as shown in table 6-2. For details, please refer to the
group P97 function code setting. If the fault disappears automatically during the running process, the drive will
also automatically reset to the status before the alarm (except AL.SC1, for details, please refer to the group
P97 function code description).
Table 6-2 Alarm code table
Alarm
code
Alarm type
Possible alarm causes
Solutions
AL.oL1
Drive overload
The motor parameters are incorrect.
Perform the parameter auto-tuning of the motor
The load is too large.
Adopt the drive with higher power
The DC braking amount is too large.
Reduce the DC braking current and lengthen the
braking time
When instantaneous stop happens,
restart the rotating motor
Set the start mode P08.00 as the speed tracking
restart function
The acceleration time is too short.
Lengthen the acceleration time
The grid voltage is too low.
Check the grid voltage
V/F curve is improper.
Adjust V/F curve and torque increase
