Veichi SI10, Manual

Page: 20 / 42

Solar Pump Controller Manual
19
o.U.4
Close down
over voltage
1.Supply voltage overrun;
1. Check the network voltage,
Troubleshooting;
2. Ask for technical support;
o.L.1
Machine
overload
1. V/F curve setup or torque
boost is not suitable
2. Network voltage is
relatively low;
3. Machine overload protection
parameter is set improperly;
4.Machine block rotor operation
or heavy load;
5.Universal machine low speed
with heavy load works for a
long time;
1. Reset V/F curve or torque boost
value
；
2.Check the input power;
3.Check
[E-57] setting;
4.Adjust load or select and use
frequency inverter with matching
capacity grade
；
5. When requiring long term low
speed work, please use special
motor for frequency inverter;
o.L.2
Frequency
inverter over
load
1.Heavy load;
2.Acc time is set too Short;
3. Restart the machine in running
when momentary stop occurs;
4. V/F curve setup or torque
boost is not suitable
1. Select frequency inverter with
proper capacity;
2. Lengthen acceleration time;
3. Restart after the motor
completely stop or set
[E-30] as“2”;
4. Reset V/F curve or torque boost
value;
o.H.
Frequency
inverter inner
overheat
1. Too high ambient temperature;
2. Damaged fan;
3. Blocked air duct;
4.Carry wave frequency is too
big;
1. Ameliorate periphery
environment;
2.Replace fan;
3. Clear air duct, improve the
frequency inverter periphery
ventilation and dissipation
environment;
4.Check [E-20] and [E-21] setting;
LU1
Under-voltage
of supply power
1.Supply power is too Low;
2.Voltage detection circuit
abnormal;
1.check the supply voltage and
Troubleshooting;
2. Ask for technical support;
SEn
Feedback
sensor fault
In PID running mode, when the
analog feedback channel is
selected, the feedback
signal is lower than
[H-28] setting
value, alarm
1. Check wiring and re-wire again;
2. Adjust the feedback signal input
type;