5-2
LED display
Description
Cause
Possible solutions
Over voltage
DC bus voltage exceeds
the OV detection level:
200V class: 410Vdc
400V class: 820Vdc
Deceleration time set too
short, resulting in regenerative
energy flowing back from motor
to the inverter.
The inverter input voltage is too
high.
Use of power factor correction
capacitors.
Excessive braking load.
Braking transistor or resistor
defective.
Speed search parameters set
incorrectly.
Increase deceleration time
Reduce input voltage to
comply with the input
voltage requirements or
install an AC line reactor to
lower the input voltage.
Remove the power factor
correction capacitor.
Use dynamic braking unit.
Replace braking transistor
or resistor.
Adjust speed search
parameters.
Low Voltage
DC bus voltage is lower
than the UV detection
level or the pre-charge
contactor is not active
while the inverter is
running.
200V class: 190Vdc
400V class: 380Vdc
The detection value
can be adjusted by
07-13).
The input voltage is too low.
Input phase loss.
Acceleration time set too short.
Input voltage fluctuation.
Pre-charge contactor damaged.
DC bus voltage feedback signal
value not incorrect.
Check the input voltage.
Check input wiring.
Increase acceleration time.
Check power source
Replace pre-charge
contactor
Replace control board or
complete inverter.
Input phase
loss
Phase loss at the input
side of the inverter or
input voltage imbalance,
active when 08-09 = 1
(enabled).
Wiring loose in inverter input
terminal.
Momentary power loss.
Input voltage imbalance.
Check input wiring / faster
screws.
Check power supply.
Output phase
loss
Phase loss at the output
side of the inverter,
active when 08-10 = 1
(enabled).
Wiring loose in inverter output
terminal.
Motor rated current is less than
10% of the inverter rated current.
Check output wiring / faster
screws.
Check motor & inverter
rating.
OH1
Heatsink
overheat
The temperature of the
heat sink is too high.
Note: when OH1 fault
occurs three times within
five minutes, it is
required to wait 10
minutes before resetting
the fault.
Ambient temperature too high.
Cooling fan failed
Carrier frequency set too high.
Load too heavy.
Install fan or AC to cool
surroundings.
Replace cooling fan.
Reduce carrier frequency.
Reduce load / Measure
output current
Summary of Contents for E510-201-SH
Page 1: ......
Page 28: ...3 14 b 200V 2HP 1 3PH 200V 3HP 20HP 400V 3HP 25HP IP20 NEMA1 ...
Page 29: ...3 15 c 200V 25HP 400V 30HP d 200V 30HP 40HP 400V 40HP 75HP ...
Page 51: ...3 37 3 5 Standard Wiring 10V AI1 AI2 AGND E P P ...
Page 72: ...4 6 4 1 4 Example of keypad operation Example 1 Modifying parameters ...
Page 74: ...4 8 4 1 5 Operation control ...
Page 206: ...4 140 Acceleration Deceleration calculation of mode 2 ...
Page 316: ...4 250 6 Timer mode 6 FLASH Timer mode 2 7 Timer mode 7 FLASH Timer mode 3 ...
Page 424: ...REVISIONS Date Manual Number Revision May 2017 4KA72X645T01 First edition ...
Page 425: ......