Sunfar C300 Series User Manual

80 SUNFAR C300
C300 series of non-sensor current vector-control inverter manual
7. FAULT DIAGNOSIS AND COUNTERMEASURES
7.1 Protective functions and Countermeasures
Code Faults Probable Causes Solutions
Fu.1
over-current during
Acc
1. Acceleration time is too
short.
2. V/F curve is not suitable.
3. You hasn’t set the right
motor parameters
4. User start rotating motor
directly, but doesn’t set
function of detecting speed
and restart.
5. Value of torque boost set
too high.
6. Power grid voltage is too
low
1.Prolong the acceleration
time
2. Descend the torque boost
or adjust the V/F curve
3.Input motor’s parameter once
again and do self-determination
to parameter.
4.To set function of detecting
speed and restart.
5.To decrease voltage of torque
boost
6. Check power gird voltage,
and reduce power then use
Fu.2
over-current
during Dec
Deceleration time is too short. Prolong the deceleration time
Fu.3
Over-current during
Running or stopping
1.Load occurs mutation
2.Power grid voltage is too low
1. Decrease power supply
load fluctuation
2.Check voltage.
Fu.4
over-voltage
during Acc
1.Input voltage is too high
2. Power supply is switched
on or off frequently.
1.Check power supply voltage
2.Decrease setting value of
F4.11
3.Control the on-off of inverter
by the control terminal
Fu.5
over-voltage
during Dec
1.Deceleration time is too
short.
2.Input-voltage is abnormal
1.Extend the deceleration time
2.Check power supply voltage
3.Install or select the brake
resistance
Fu.6
over-voltage
during running
1.Power supply is abnormal
2.There are energy feedback
load
1.Check power supply
2.Install or select brake resistor
Fu.7
over-voltage
during stop
Power supply is abnormal Check power supply voltage
Fu.8
Under-voltage
during running
1. Power supply is abnormal2.
There is great fluctuation of
load in electric network.
1.Check power supply voltage
2.Provide the power supply
separately
Fu.9
protective action of
inverterr
1. Output is short-circuit or
ground
2. Load is too heavy
1. Check wiring
2. Reduce the load
3. Check whether brake resistor
is short-circuit

Sunfar C300 Series Specifications

General

Brand	Sunfar
Model	C300 Series
Category	Inverter
Language	English