Omron SYSDRIVE 3G3RV Series User Manual

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K
KK
K If the Direction of the Motor Rotation is Reversed
If the motor operates in the wrong direction, the motor output wiring is faulty. When the Inverter T1(U),
T2(V), and T3(W) are properly connected to the motor T1(U), T2(V), and T3(W), the motor operates in a for-
ward direction when a forward run command is executed. The forward direction depends on the manufacturer
and the motor type, so be sure to check the specifications.
The direction of rotation can be reversed by switching two wires among U, V, and W.
K
KK
K If the Motor Does Not Put Out Torque or If Acceleration Is Slow
Use the following information if the motor does not output torque or if acceleration is too slow.
nThe torque limit has been reached.
When a torque limit has been set in parameters L7-01 to L7-04, no torque will be output beyond that limit.
This can cause the torque to be insufficient, or the acceleration time to be too long. Check to be sure that the
value set for the torque limit is suitable.
If torque limits have been set for the multi-function analog input (H3-09 = 10 to 12 or 15), check to be sure
that the analog input value is suitable.
nThe stall prevention level during acceleration is too low.
If the value set for L3-02 (Stall Prevention Level during Acceleration) is too low, the acceleration time will be
too long. Check to be sure that the set value is suitable.
nThe stall prevention level during running is too low.
If the value set for L3-06 (Stall Prevention Level during Running) is too low, the speed will drop before out-
putting torque. Check to be sure that the set value is suitable.
nV/f control limit
The output torque at low frequencies is smaller with V/f control than it is for vector control. Consider whether
it is possible to change to vector control (A1-02 = 2).
nAutotuning has not been performed for vector control
Vector control will not be perform if autotuning has not been performed. Perform autotuning separately for the
motor, or set the motor constants through calculations. Alternatively, change the Control Method Selection
(A1-02) to V/f control (0 or 1).
K
KK
K If the Motor Operates Higher Than the Reference
Use the following information if the motor operates higher than the reference.

Omron SYSDRIVE 3G3RV Series Specifications

General

Brand	Omron
Model	SYSDRIVE 3G3RV Series
Category	Inverter
Language	English