Danfoss VFD500 Series Manual page 117

VFD500 high performance vector control frequency inverter user manual
Fault Name
Motor
overload
Power input
phase loss
Power output
phase loss
Faul
Disp
t
lay
cod
e
1:The load is too large or the
motor is blocked.
2 : T h e l a r g e i n e r t i a l o a d
acceleration and deceleration
time is too short
3:When the VF is controlled, the
torque boost or V/F curve is not
Er.o
11 suitable.
L1
4:The motor selection is too
small
5 : o v e r l o a d a t l o w s p e e d
operation
6:Improper setting of motor
parameters and motor protection
parameters
1: The three-phase power input
is
abnormal.
Er.iL
2: The drive board is faulty.
12 P
3: Thelightning proof board is
faulty.
4: The main control board is
faulty.
1: The cable connecting the
frequency
inverter and the motor is faulty.
2: The frequency inverter's
Er.o
t h r e e - p h a s e o u t p u t s a r e
13 LP
unbalanced
when the motor is running.
3: The drive board is faulty.
4: The IGBT module is faulty.
Chapter6 Fault diagnosis and solutions
Possible Causes
114
Solutions
1. Reduce the load and
check the motor and
mechanical conditions.
Correctly set the motor
parameters and motor
protection parameters.
2, increase the
acceleration and
deceleration time
3. Adjust the torque boost
or V/F curve
4, select a motor with a
higher power level
5. Perform motor self-
learning in cold state and
reduce carrier frequency
at low speed
6, check the settings of
1 : E l i m i n a t e e x t e r n a l
faults.
2 : A s k f o r t e c h n i c a l
support.
3 : A s k f o r t e c h n i c a l
support.
4 : A s k f o r t e c h n i c a l
support.
1 : E l i m i n a t e e x t e r n a l
faults.
2: Check whether the
M o t o r t h r e e p h a s e
winding
is normal.
3 : A s k f o r t e c h n i c a l
support.
4 : A s k f o r t e c h n i c a l
support.