INVT IPE300 Series - Page 262

IPE300 series engineering VFD Troubleshooting
-251-
Fault
code
Fault
No.
Fault type
Possible cause
Solution
ENC1O
37
Encoder offline fault
Encoder line sequence is
wrong, or signal wires are
poorly connected.
Check the encoder wiring.
ENC1D
38
Encoder reversal
fault
The encoder speed signal is
contrary to the motor running
direction.
Reset encoder direction.
ENC1Z
39
Encoder Z pulse
offline fault
Z signal wires are
disconnected.
Check the wiring of Z signal.
OT
59
Motor
over-temperature
fault
Motor over-temperature input
terminal is valid;
The temperature detection
resistance is abnormal.
Long-time overload running or
exception occurred.
Check the wiring of the
motor over-temperature
input terminal (terminal
function 57);
Check whether the
temperature sensor is
proper;
Check the motor, and
perform maintenance on the
motor.
STO
40
Safe torque off
Safe torque off function is
enabled by external forces.
/
STL1
41
Exception occurred
to safe 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 1
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.
STL2
42
Exception occurred
to safe circuit of
channel 2
The wiring of STO is improper;
Fault occurred to external
switch of STO;
Hardware fault occurred to
safety circuit of channel 2
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.
STL3
43
Exception occurred
to channel 1 and
channel 2
Hardware fault occurred to
STO circuit.
Replace the control board.
CrCE
44
Safety code FLASH
CRC check fault
Control board is faulty.
Replace the control board.