Danfoss VFD500 Series Manual page 118

Chapter 6 Fault diagnosis and solutions
Fault Name
IGBT Module
overheat
Motor
overheat
By wave
current
limitingfault
Ground short
circuit
module
temperature
detection fault
Current
detection fault
VFD500 high performance vector control frequency inverter user manual
Faul
Disp
t
lay
cod
e
1: The ambient temperature is
too
high.
2: The air filter is blocked.
Er.
3: The fan is damaged.
14 oH
4: The thermally sensitive
resistor of
the IGBT module is damaged.
5: The inverter IGBT module is
damaged
1:The temperature sensor wiring
is loose
2:The motor temperature is too
Er.
16 high
oH3
3:Themotor temperature sensor
detects that the temperature is
greater than the set threshold.
1: The load is too heavy or
locked-
Er.C
rotor occurs on the motor.
17
bC
2: The frequency inverter model
is of
too small power class
1. Motor burnout or insulation
aging
2, The cable is damaged and
Er.G
contact, short circuit
18
F
3. The distributed capacitance of
the terminal and motor cable
is larger
motor cable
4, Hardware is damaged
1, Temperature detection line
broken
Er.t
2, Drive board is faulty
20 CK
3. Main control board is faulty
4 , T h e e n v i r o n m e n t a l
temperature is too low
1: The HALL device is faulty.
Er.C
21 2: The drive board is faulty.
ur
3: The control board is faulty
Possible Causes
115
Solutions
1:Lower the ambient
temperature.
2: Clean the air filter.
3: Replace thedamaged
fan.
4:Replace the damaged
thermally
sensitive resistor.
5: Replace the inverter
module.
1:check the temperature
sensor wiring
2:Improve the carrier
frequency, strengthen the
heat dissipation of the
motor, reduce the load,
and select a motor with
higher power.
3 : C h e c k i f t h e s e t
1: Reduce the load and
check
the motor and mechanical
condition.
2: Select a frequency
inverter of
higher power class.
1. Confirm the insulation
resistance of the motor. If
it is turned on, replace the
motor.
2. Check the power cable
of the motor to eliminate
the fault point.
3, reduce the carrier
frequency, install the
output reactor
1. Check the thermistor
wiring
2. Ask for technical
support
3. Ask for technical
support
4, manual intervention to
drive the temperature rise
1: Replace the faulty
HALL
device.
2: Replace the faulty
drive board.
3: Ask for technical
support.