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WIN-9_F Series User Manual
Fault
Display
*oH1
Name
Heatsink overheat (OH1)
Description
Corrective Action
The transistor heatsink temperature
exceeded the allowable value
(Fin temperature > OH1 detection
level).
Check the fan and ambient
The transistor heatsink temperature temperature.
exceeded the allowable value
oH2
Heatsink overheat (OH2)
oL1
Motor overload (OL1)
Inverter output exceeded the motor
overload level (see P011 & P013).
oL2
Inverter overload (OL2)
Inverter output exceeded inverter
theoverload level.
*oL3
Overtorque detection
(OL3)
Inverter output current exceeded
the overtorque detection level
(P075).
SC
Load short-circuit (SC)
Inverter output (load) is shortcircuited.
EF0
External fault from serial
communication
Fault occurred in the external control circuit.
Check the external control
circuit.
EF2
External fault at terminal
S2
EF3
External fault at terminal
S3
EF4
External fault at terminal
S4
Fault occurred in the external control circuit.
EF5
External fault at terminal
S5
Check the condition of the
input terminal. If the LED lights
when terminal is not connected, replace the inverter.
EF6
External fault at terminal
S6
SPI
●●
Inverter input power supply has
Excessive ripple in the DC open phase.
●●
bus
Large unbalance in input line
voltage.
(Fin temperature > OH2 detection
level).
Reduce the load.
Reduce the load, extend the
acceleration time.
Check the motor coil resistance.
●●
Check the motor installation.
●●
●●
Check the line voltage.
Re-tighten the output terminal screws.
●●
SPo
Output open-phase
Inverter output has open phase.
●●
*CE
MODBUS transmission
fault
Control data cannot be received
nor-mally.
Check the transmission devices or signals.
Transmission between the
●●
Insert the digital operator
inverter and digital operator cannot connector again.
be established 5 seconds after sup●●
Check the control circuit
plying power.
wiring.
●●
MPU peripheral element check
●●
Replace the control card.
fault (on-line)
●●
CPF0
Control circuit fault 1
(CPFO) Digital operator
transmission fault
Check the output wiring.
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