Chapter 6 Troubleshooting
65
Fault
Display
Name of Protection
Possible Cause to Fault
Countermeasure
OL2 Driver
overloaded
The driver output
exceeds its overload
value
The DC brake quantity
is too large
The V/F curve is not
appropriate
The power grid voltage
is too low
The load is too large
The acceleration time
is too short
The current limit level
is too low
Reduce the load and
increase the
acceleration time
Reduce the DC brake
current and increase
the brake time
Adjust the V/F curve
and torque boost
Check the power grid
voltage
Select the driver with
the larger power
Increase the
acceleration time
Raise the current limit
level
SC
Load
short-circuit/output
earthing short-circuit
The driver output load
is short-circuited
The output side
earthing is
short-circuited
Check whether the
connection cable
between the driver and
the motor is damaged
Check the motor coil
resistance
Check the motor
insulation
EF0
External fault with the
RS485 serial
communication
The serial (MODBUS)
transmission error
Fault caused by the
external control circuit
Set the correct timeout
detection time or set
the Pb.03 timeout
detection time as 0.0s
Check the external
control circuit
Check the input
terminal conditions. If
terminals are not used
but the fault is still
displayed, please seek
the technical support
for settlement.
EF1
External fault with
terminals X1~X5
SP1
Input phase loss or
imbalance
Input R,S & T phase
loss or imbalance
Check the input
voltage
Check the input
connection line
SP0
Output phase loss or
imbalance
Output U,V,W phase
loss or imbalance
Check the output
connection line
Check the motor and
cable insulation
Summary of Contents for AS600M Series
Page 96: ...96 ...