256
Check first when you have some troubles
5.5.3
Motor generates heat abnormally
Is the fan for the motor is running? (Check for dust accumulated.)
Check that the load is not too heavy. Lighten the load.
Are the inverter output voltages (U, V, W) balanced?
Check that the
Pr. 0 Torque boost
setting is correct.
Was the motor type set? Check the setting of
Pr. 71 Applied motor
.
When using any other manufacturer's motor, perform offline auto tuning.
5.5.4
Motor rotates in opposite direction
Check that the phase sequence of output terminals U, V and W is correct.
Check that the start signals (forward rotation, reverse rotation) are connected properly.
Check that the
Pr. 40 RUN key rotation direction selection
setting is correct.
5.5.5
Speed greatly differs from the setting
Check that the frequency setting signal is correct. (Measure the input signal level.)
Check that the
Pr. 1, Pr. 2, Pr. 19, Pr. 245, calibration parameter Pr. 125, Pr. 126, C2 to C7
settings are correct.
Check that the input signal lines are not affected by external noise. (use shielded cables)
Check that the load is not too heavy.
Check that the
Pr. 31
to
Pr. 36 (frequency jump)
settings are correct.
5.5.6
Acceleration/deceleration is not smooth
Check that the acceleration and deceleration time settings are not too short.
Check that the load is not too heavy.
Check that the torque boost
(Pr. 0, Pr. 46)
setting is not too large to activate the stall function under V/F control.
5.5.7
Motor current is large
Check that the load is not too heavy.
Check that the
Pr. 0 Torque boost
setting is correct.
Check that the
Pr. 3 Base frequency
setting is correct.
Check that the
Pr. 19 Base frequency voltage
setting is correct
Check that the
Pr. 14 Load pattern selection
setting is correct.
5.5.8
Speed does not increase
Check that the
Pr. 1 Maximum frequency
setting is correct. (If you want to run the motor at 120Hz or more, set
Pr. 18
High speed maximum frequency
.
Check that the load is not too heavy. (In agitators, etc., load may become heavier in winter.)
Check that the torque boost
(Pr. 0, Pr. 46)
setting is not too large to activate the stall function under V/F control.
Check that the brake resistor is not connected to ter and P1 or P1-PR accidentally.
Содержание FR-D700 Series
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