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GD350A series high-performance multifunction VFD
-258-
Fault
code
Fault type
Possible cause
Solution
occurred to resistor;
Long-time overload running or
exception occurred
sensor is proper;
Check the motor and perform
maintenance on the motor
STO
Safe torque off
Safe torque off function is enabled
by external forces
/
STL1
Exception
occurred to safe
circuit of
channel H1
The wiring of STO is improper;
Fault occurred to external switch
of STO;
Hardware fault occurred to safety
circuit of channel H1
Check whether terminal wiring
of STO is proper and firm
enough;
Check whether external switch
of STO can work properly;
Replace the control board
STL2
Exception
occurred to
channel H2 safe
circuit
The wiring of STO is improper;
Fault occurred to external switch
of STO;
Hardware fault occurred to safety
circuit of channel H2
Check whether terminal wiring
of STO is proper and firm
enough;
Check whether external switch
of STO can work properly;
Replace the control board
STL3
Exception
occurred to
channel H1 and
channel H2
Hardware fault occurred to STO
circuit
Replace the control board
CrCE
Safety code
FLASH CRC
check fault
Control board is faulty
Replace the control board
E-Err
Repetitive
expansion card
type
The two inserted expansion cards
are of the same type
Users should not insert two
cards with the same type;
check the type of expansion
card, and remove one card
after power down
ENCUV
Encoder UVW
loss fault
No electric level variation occurred
to UVW signal
Check the wiring of UVW;
Encoder is damaged
F1-Er
Failed to identify
the expansion
card in card slot
1
There is data transmission in
interfaces of card slot 1, however,
it cannot read the card type
Confirm whether the expansion
card inserted can be supported;
Stabilize the expansion card
interfaces after power down,
and confirm whether fault still
occurs at next power-on;