CodeCode
Programmer displayProgrammer display
Probable fault reasonProbable fault reason
Deep faultDeep fault
reason/troubleshootingreason/troubleshooting
Fault displayFault display
and “Temp cutback” must setand “Temp cutback” must set
“OFF”.“OFF”.
temperature sensor to the normaltemperature sensor to the normal
scope.scope.
3131
Coil 1 Driver Open/ShortCoil 1 Driver Open/Short
Driver 1 output shutDriver 1 output shut
1. Connected load open or short.1. Connected load open or short.
2. Connecting pin stained.2. Connecting pin stained.
3. Wrong wiring.3. Wrong wiring.
ReasonReason：： Driver 1 (pin 6) is eitheDriver 1 (pin 6) is eitherr
open or shorted. This fault can beopen or shorted. This fault can be
set only when “Main Enable” setset only when “Main Enable” set
to “OFF”.to “OFF”.
TroubleshootingTroubleshooting
：：
Correct open orCorrect open or
short circuit, restart output.short circuit, restart output.
3131
Main Contactor Coil Open/ShortMain Contactor Coil Open/Short
Motor stops workingMotor stops working
Main contactor disconnectsMain contactor disconnects
Electromagnetic brake disconnectsElectromagnetic brake disconnects
Throttle invalidThrottle invalid
BrakeBrake
Pump stops workingPump stops working
1. Connected load open or short.1. Connected load open or short.
2. Connecting pin stained.2. Connecting pin stained.
3. Wrong wiring.3. Wrong wiring.
ReasonReason
：：
Main contactor driver Main contactor driver
(pin 6) is either open or shorted.(pin 6) is either open or shorted.
This fault can be set only whenThis fault can be set only when
“Main Enable” set to “ON”.“Main Enable” set to “ON”.
TroubleshootingTroubleshooting：：Correct openCorrect open
circuit/short circuit, restart output.circuit/short circuit, restart output.
3232
Coil2 Driver Open/ShortCoil2 Driver Open/Short
Driver 2 output shutDriver 2 output shut
1. Connected load open or short.1. Connected load open or short.
2. Connecting pin stained.2. Connecting pin stained.
3. Wrong wiring.3. Wrong wiring.
ReasonReason
：：
Driver 2 output(pin 5) isDriver 2 output(pin 5) is
either open or shorted. This faulteither open or shorted. This fault
ccan be set only when “EM brakean be set only when “EM brake
Type” set to 0.Type” set to 0.
TroubleshootingTroubleshooting
：：
Correct open orCorrect open or
short circuit, restart output.short circuit, restart output.
3232
EM Brake Open/ShortEM Brake Open/Short
Electromagnetic brake disconnectsElectromagnetic brake disconnects
Throttle invalidThrottle invalid
BrakeBrake
1. Connected load open or short.1. Connected load open or short.
2. Connecting pin stained.2. Connecting pin stained.
3. Wrong wiring.3. Wrong wiring.
ReasonReason：： EM Brake output(pin 5)EM Brake output(pin 5)
is either open or is either open or shorted. Thisshorted. This
fault only occurs when “EM brakefault only occurs when “EM brake
Type” set to 0.Type” set to 0.
TroubleshootingTroubleshooting：：Correct open orCorrect open or
short circuit, restart output.short circuit, restart output.
3333
Coil3 Driver Open/ShortCoil3 Driver Open/Short
Driver 3 output shutDriver 3 output shut
1. Connected load open or short.1. Connected load open or short.
2. Connecting pin stained.2. Connecting pin stained.
3. Wrong wiring.3. Wrong wiring.
ReasonReason
：：
Driver 3 output (pin 4) isDriver 3 output (pin 4) is
either open or shortedeither open or shorted
TroubleshootingTroubleshooting
：：
Correct open orCorrect open or
short circuit, restart output.short circuit, restart output.
3434
Coil4 Driver Open/ShortCoil4 Driver Open/Short
Driver 4 output shutDriver 4 output shut
1. Connected load open or short.1. Connected load open or short.
2. Connecting pin stained.2. Connecting pin stained.
3. Wrong wiring.3. Wrong wiring.
ReasonReason：： Driver 3 Driver 3 output (pin output (pin 3)3)
is either open or shortedis either open or shorted
TroubleshootingTroubleshooting
：：
Correct open orCorrect open or
short circuit, restart output.short circuit, restart output.
3535
PD Open/ShortPD Open/Short
PD shutPD shut
1. Connected load open or short.1. Connected load open or short.
2. Connecting pin stained.2. Connecting pin stained.
3. Wrong wiring.3. Wrong wiring.
ReasonReason：：PD(pin 2) is either openPD(pin 2) is either open
or shortedor shorted
TroubleshootingTroubleshooting
：：
Correct open orCorrect open or
short circuit, restart output.short circuit, restart output.
3636
Encoder FaultEncoder Fault
Electromagnetic brake disconnectsElectromagnetic brake disconnects
1. Motor encoder error.1. Motor encoder error.
2. Wrong wiring.2. Wrong wiring.
ReasonReason：：Encoder faultEncoder fault
TroubleshootingTroubleshooting
：：
Restart keyRestart key
switch.switch.
3737
Motor OpenMotor Open
Motor stops workingMotor stops working
Main contactor disconnectsMain contactor disconnects
Electromagnetic brake disconnectsElectromagnetic brake disconnects
Throttle invalidThrottle invalid
BrakeBrake
Pump stops workingPump stops working
1. Motor phases is open.1. Motor phases is open.
2. Wrong wiring.2. Wrong wiring.
ReasonReason
：：
Motor phase, U,V,WMotor phase, U,V,W
detected opendetected open
TroubleshootingTroubleshooting：：Check phaseCheck phase
and restart the key switch.and restart the key switch.
3838
Main Contactor WeldedMain Contactor Welded
Motor stops workingMotor stops working
Main contactor disconnectsMain contactor disconnects
Electromagnetic brake disconnectsElectromagnetic brake disconnects
Throttle invalidThrottle invalid
BrakeBrake
Pump stops workingPump stops working
1. Main contactor tips are welded.1. Main contactor tips are welded.
2. Motor phases U and V i2. Motor phases U and V iss
disconnected or open.disconnected or open.
3. An alternate voltage path is3. An alternate voltage path is
providing a current to capacitor( B+providing a current to capacitor( B+
connection terminal)connection terminal)
ReasonReason：：Main contactor keep tooMain contactor keep too
much connecting, capacitormuch connecting, capacitor
voltage can’t discahrge.voltage can’t discahrge.
TroubleshootingTroubleshooting
：：
Restart the keyRestart the key
switchswitch
3939
Main Contactor Did Not CloseMain Contactor Did Not Close
Motor stops workingMotor stops working
Main contactor disconnectsMain contactor disconnects
Electromagnetic brake disconnectsElectromagnetic brake disconnects
Throttle invalidThrottle invalid
1. Main contactor does not close1. Main contactor does not close
2. Contactor contacts have2. Contactor contacts have
oxidized, melted, or connectionoxidized, melted, or connection
status is unstable.status is unstable.
3. External load on the 3. External load on the capacitorcapacitor..
ReasonReason
：：
When the mainWhen the main
contactor is closed, capacitorcontactor is closed, capacitor
voltage does not charge B+voltage does not charge B+
voltage.voltage.
TroubleshootingTroubleshooting：：Check theCheck the
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