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Solar Pump Controller Manual
18
3.2 Fault information and troubleshooting
Fault
code
Type of fault Possible fault reason Troubleshooting
S.C System fault
1.Acceleration time is set too
short
2.Frequency inverter output
phase or grounding short
circuit;
3.Module failure;
4.Disturbance;
1.Lengthen acceleration time;
2.Chect the peripheral device,
reset after troubleshooting;
3.Ask for technical support;
4. Check peripheral device,
grounding line, shield line
grounding condition, distance
condition of terminals and control
machine;
o.C.1
Acc over
current
1.Acc time is too short;
2. Restart the machine in running
when momentary stop occurs.;
3. V/F curve setup is not suitable
or torque is boosted too high
4.Frequency inverter capacity is
too low;
1. lengthen acceleration time;
2.restart after the machine totally
stop or set [E-30] as“2”;
3. Reset V/F curve or torque boost
value;
4. Select frequency inverter with
proper capacity;
o.C.2
Dec over
current
1.Deceleration time is too short;
2.Potential load or inertia is too
big;
3. Frequency inverter capacity is
too low;
1.Lengthen deceleration time
2.Connect external resistor or
braking unit;
3.Select frequency inverter with
proper capacity;
o.C.3
Over current
at constant
speed
1.Load change suddenly;
2.Network voltage is
relatively low.
1. Check the load change condition
and eliminate it;
2.Check the input power;
o.U.1
Acc over
voltage
1.Supply voltage overrun;
2. Restart the machine in
running(no tracking start);
1.Check the network voltage,
troubleshooting;
2. Restart after the machine totally
stop or set
[E-30] as“2”;
o.U.2
Dec over
voltage
1.Dec time is too short;
2. Potential load or inertia is too
big;
3. Supply voltage overrun;
1. Lengthen deceleration time;
2. Decrease potential load, or
amplify the frequency inverter
capacity, or install more braking
unit;
3.Check the network voltage,
Troubleshooting;
o.U.3
Over voltage
at constant
speed
1.Supply voltage overrun;
2.Input voltage is abnormal
1.Check the network voltage,
troubleshooting;
2.Install input reactor;