Senlan Hope800 Series Manual page 143

Fault code Fault type
Overvoltage
during
constant-speed
Er.oun(7)
operation
Overvoltage in
standby state
Er.ouE(8)
Fault code Fault type
Undervoltage
during running
Er.dcL(9)
Input phase loss
Er.PLI(10)
Output phase loss
Er.PLo(11)
Power device
protection
Er.FoP(12)
Inverter
overheating
Er.oHI(13)
Inverter overload
Er.oLI(14)
Possible causes
Input voltage abnormal
Accel/decel time too short
Input voltage changes irregularly
Large load inertia
Input voltage overhigh
Error of DC bus voltage test circuit
Possible causes
Input voltage abnormal or power loss
during running
There is heavy-load impact
Charging contactor failed
Input phase loss
R, S or T phase loss
Three input phases imbalanced
Serious oscillation of output
Loss of output ( U, V or W)
Output has interphase short-circuit or
grounding short-circuit
Wiring of or components on the
control board loose
Wiring of the motor or inverter too
long
Overcurrent of braking unit of 15kW
inverter or below
Serious interference or failure of
inverter
Ambient temperature overhigh
Air path blocked or the fan failed
Load too heavy
Load too heavy
Inverter temperature too high
Accel time too short
Carrier frequency too high
V/F curve improper
7 Troubleshooting
Remedies
Check the input power
Increase the accel/decel time
Install an input reactor
Employ a dynamic braking unit
Check the input power
Call us
Remedies
Check input power and wiring
Check the load
Check and replace it
Input the input power and wiring
Check the wiring
Check input voltage
Adjust parameters to eliminate
the oscillation
Check the output wiring
Check the motor and cables
Rewire
Check and rewire
Add output reactor or filter
Check the external braking
resistance and wiring
Call us
Lower the ambient temperature
Clean air path or replace the fan
Check the load or select an
high-capacity inverter
Check the load or select an
high-capacity inverter
Check the fan, air path and
ambient temperature
Increase the accel time
Lower the carrier frequency or
select an inverter with a higher
capacity
Regulate V/F curve and torque
boost level
139