44
No Fault
Code
Possible Causes
Solutions
Fault
Type
◆
◆
Check if the
load is too short, or the AC
drive starts during the rotation
of the motor or it needs to
increase the energy
consumption components.
Check the input
power;
DEC time of the
◆
DEC time;
◆
Check the input power;
◆
Select the AC drive with a
larger power;
◆
Check if the load is short
circuited (the grounding
short circuited or the wire
short circuited) or the
rotation is not smooth;
◆
Check the output
configuration;
◆
Check if there is strong
interference.
Increase the ACC and
◆
the supply line
Check the input power of
◆
◆
There is large energy
feedback.
Input voltage is abnormal;
◆
deceleration is too fast;
◆
The voltage of
is too
low;
◆
The
power of AC drive is
too low;
◆
The load transients or is
abnormal;
◆
The grounding is short
circuited and the output
is phase loss;
◆
There is a strong external
interference
The acceleration and
grid
◆
The voltage of power
supply is too low.
Accelerating
overvoltage
Constant
overvoltage
Bus
undervoltage
fault
1
2
3
7
E.oU1
E.oU2
E.oU3
6
E.oc3
4
5
E.oc1
E.oc2
E.LU
Decelerating
overvoltage
Accelerating
overcurrent
Decelerating
overcurrent
Constant
overcurrent
◆
Check voltage of power
supply
◆
Reset the rated current of
the motor;
◆
Check the load and adjust
torque boost.
◆
The voltage of power
supply is too low;
◆
The motor setting rated
current is incorrect;
◆
The
motor stall or load
transients is too strong.
Motor
overload
8
E.oL1
Chapter 5 Troubleshooting
Only qualified electricians are allowed to maintain the AC drive. Read the safety
ª
instruction in chapter safety precaution before working on the AC drive.
Danger
5.1 Fault
Code List
