Veichi AC300 Series Technical Manual page 19

AC300 Series Vector Control Inverter Manual
● Deceleration time is too short.
● Load potential energy or
Decel. inertia is too large.
8
over-voltage ● Power voltage fluctuation
over limit.
Constant
● Power voltage fluctuation
9 speed
over limit.
over-voltage
Over-voltage ● Power voltage fluctuation
28
while stop over limit.
● Acceleration time is too short.
● Start running motor.
● V/F curve setting is not
Accel.
4 suitable.Or torque boost too
over-current
high.
● Inverter capacitance is too
small.
● Deceleration time is too short.
● Load potential energy or
Decel.
5 inertia is too large.
over-current
● Power voltage fluctuation
over limit.
Constant
● Sudden load change.
6 speed
● Power grid voltage is too low.
over-current
● V/F curve setting is not
suitable. Or torque boost too
high.
● Power grid voltage is too low.
Motor ● incorrect overload protection
11
over-load setting.
● Locked-rotor run or too heavy
load.
● Universal motor long time low
speed run.
● Load is too heavy.
● Acceleration time is too short.
Inverter
12
● Start running motor.
over-load
● V/F curve setting is not
Fault Diagnoses and Processing
● Prolong Deceleration time.
● Reduce load inertia or
improve inverter capacitance or
add braking unit.
● Detect power voltage and
clear fault.
● Detect power voltage and
clear fault.
● Install input reactor.
● Check input power,clear
fault.
● Seek support from factory.
● Prolong acc time.
● Restart motor until it totally
stop.Set E-30 as 1or2.
● Reset V/F curve or torque
boost value.
● Select inverter with right
capacitance.
● Prolong Deceleration time.
● Connect external braking
resistance or braking unit.
● Select inverter with right
capacitance.
● Check load change and clear
it.
● Check input power,clear
fault.
● Reset V/F curve or torque
boost value.
● Check input power,clear
fault.
● Unreasonable H-56 setting.
● Adjust load or select inverter
with right capacitance.
● If need long time low speed
run, please choose special
motor for inverter.
● Select inverter with right
capacitance.
● Prolong acceleration time
● Restart motor until it totally
34
AC300 Series Vector Control Inverter Manual
suitable.Or torque boost too
high.
● Acceleration time is too short.
● Short circuit between inverter
System output phases or earth.
1/2/3
abnormality ● Module is damaged.
● Electromagnetic disturb.
● Temperature is too high.
Inverter
● Air channel is blocked.
16
over-heat
● Fan connection parts is loose.
● Fan is damaged.
Rectifier
● Temperature detection circuit
17 bridge
fault
over-heat
● Detection overtime
● Perform static detection while
motor is running.
Motor
20 ● Capacitance difference is too
detection fault
big between motor and inverter.
● Motor parameter setting
mistake.
● Electromagnetic disturb in
21/69 Memory fault memory period.
● EEPROM damage.
30 Reserved
13 Input phase
● 3 input phase missing
missing
/65
Output phase ● 3 phase output of inverter
14
missing missing connection with motor
Output ● The output side of the inverter
-
Ground is shorted to ground.
Current ● Detect circuit fault.
19
detection fault ● Phase imbalance
Inverter ● Peripheral equipment fault
17
external fault protection.
E.PAn Keyboard ● Keyboard wire fault.
Fault Diagnoses and Processing
stop.Set E-30 as 1or2.
● Reset V/F curve or torque
boost value.
● Prolong acceleration time.
● Check periphery equipments
and restart after fault cleared.
● Seek support from factory.
● Check system wiring, earth,
shield and deal as required.
● Make the environment
meeting the requirement.
● Clear the air channel.
● Check and re-connect the
wire
● Change the same new fan.
● Seek support from factory.
● Check motor connection
wire.
● Detect after motor stop
totally.
● Change inverter model.
● Reset parameter according
to nameplate.
● re-input and save.
● Seek support from factory.
●Seek support from factory.
● Check 3phase input power
and phase.
● Check 3phase input power
wiring.
● Check wire between inverter
and motor, earth and motor
insulation.
● Check wiring and motor
insulation.
● Seek for technique support.
● Check motor and wiring.
●Check peripheral equipment.
● Check keyboard wire
35