INVT Goodrive350-19 Series Operation Manual page 401

Goodrive350-19 series VFD
Fault
Fault type
code
Encoder reversal
ENC1D
Encoder Z pulse
ENC1Z
offline fault
OT over-temperature
STO Safe torque off
Exception occurred
STL1 to safe circuit of
channel H1
Exception occurred
STL2 to channel H2 safe
Exception occurred
STL3 to channel H1 and
channel H2
The encoder speed signal is
contrary to the motor running
fault
direction
Z signal wires are
disconnected
Motor over-temperature
input terminal is valid;
Exception occurred to t
Motor
temperature detection
Exception occurred to
fault
resistor;
Long-time overload running
or exception occurred
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 H1
The wiring of STO is
improper;
Fault occurred to external
switch of STO;
circuit
Hardware fault occurred to
safety circuit of channel H2
Hardware fault occurred to
STO circuit
Possible cause
- 394 -
Troubleshooting
Corrective measure
Reset encoder direction
Check the wiring of Z signal
Check the wiring of motor
over-temperature input terminal
(terminal function 57);
Check whether temperature
sensor is proper;
Check the motor and perform
maintenance on the motor
/
Check whether terminal wiring
of STO is proper and firm
enough;
Check whether external switch
of STO can work properly;
Replace the control board
Check whether terminal wiring
of STO is proper and firm
enough;
Check whether external switch
of STO can work properly;
Replace the control board
Replace the control board