INVT Goodrive350-19 Series Operation Manual page 365

Goodrive350-19 Series VFD for Crane
Fault
Fault type
code
underload fault
[37] Encoder
ENC1O
disconnection fault
[38] Encoder reversal
ENC1D
[39] Encoder Z pulse
ENC1Z
disconnection fault
STO [40] Safe torque off
[41] Exception
STL1 occurred to safe circuit
of channel 1
[42] Exception
STL2 occurred to safe circuit
of channel 2
[43] Exception
occurred to both
STL3
channel 1 and channel
[44] Safety code
CrCE FLASH CRC check
[55] Duplicate
E-Err
expansion card type
pre-alarm according to the
setting.
Encoder line sequence is
incorrect, or signal wires are
poorly connected.
The encoder speed signal is
contrary to the motor running
fault
direction.
Z signal wires are
disconnected.
Safe torque off function is
enabled by external forces.
The wiring of STO is
improper.
Fault occurred to external
switch of STO.
Hardware fault occurred to
safety circuit of channel 1
The wiring of STO is
improper.
Fault occurred to external
switch of STO.
Hardware fault occurred to
safety circuit of channel 2
Hardware fault occurred to
STO circuit.
2
Control board is faulty.
fault
The two inserted expansion
cards are of the same type
Possible cause
-353-
Troubleshooting
Solution
pre-alarm threshold.
Check the encoder wiring.
Reset encoder direction.
Check the wiring of Z signal.
/
Check whether terminal wiring
of STO is proper and firm
enough.
Check whether the external
switch of STO can work
properly.
Replace the control board.
Check whether terminal wiring
of STO is proper and firm
enough.
Check whether the external
switch of STO can work
properly.
Replace the control board.
Replace the control board.
Replace the control board.
You should not insert two cards
with the same type. Check the
type of expansion card, and
remove one card after
power-off.