Sanken Samco SVC06, Инструкция по эксплуатации, Страница: 110 / 136

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9. Fault Analysis
Problem Check points
Motor does not
rotate Main circuit

Voltages at input terminals R, S and T are normal?

Is the motor wired correctly?
Load side

Load too heavy?

Motor locked?
Operation panel

Starting frequency setting too high (F1103)?

Operation start frequency (F1104) setting too high?

Is operation command selected for control by external signal
(F1102=2)?

Upper frequency limit set too low (F1007)?

2nd upper frequency limit (F1316) and 3rd upper frequency
limit selected by multi-function input signal are setting too
low?

Check if no setting is specified for the direction of rotation of
motor (F1109)?
Input signal

Are operation signals (FR, RR) being input?

FR and RR signals are input simultaneously?

Free run stop signal input (MBS)?

Analog signal for frequency setting is zero?
Rotation direction
different from what
it should be
Wrong wiring of output terminals U, V and W?
Is the wiring for forward and reverse run mixed up?
Rotation speed does
not increase

Upper frequency limit (F1007) activated?

Output current limiting Is setting of F1701 too low?
function activated? Torque boost (F1004) too high?

Load too heavy?

PG sensor connected correctly?
Rotation is not
constant

Load fluctuating?

Frequency setting (analog) signal fluctuating?

Are the capacity and number of poles appropriate for the inverter capacity specified for use in the
sensorless vector control mode?

PG sensor set correctly?
Acceleration /
deceleration is not
constant

Acceleration / deceleration time too short?

Output current limiting function activated?

Load too heavy?
Motor heating up

Wrong setting for V/f mode?

Torque boost too high?
Rotation speed
changes abnormally
during operation

Is the load fluctuating?

Output current limiting function activated?
Is setting of F1701 too low?
No display on the
interface of
operation panel

Voltages at input terminals R, S and T are normal?

Connection between inverter and operation panel satisfies the standard?