Reverse Rotation Prevention Function - Omron SYSDRIVE MX2 SERIES User Manual

Multi-function compact inverter
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*1.• As per sign (00) When the polarity of a torque bias signal is (+), the torque increases for forward
rotation, and when it is (−), the torque increases for reverse rotation, regardless of the RUN direction.
• Depends on the RUN direction (01)
The torque bias signal sign and torque bias direction vary depending on the RUN command direction.
Forward command: Applies torque in the same direction as the torque bias.
Reverse command: Applies torque in the reversed direction of the torque bias.

Reverse Rotation Prevention Function

This function is enabled only when Sensorless Vector Control is selected for control method
(A044/A244 = 03).
Because of its control characteristics, the Inverter may output a rotation signal in the direction
opposite to that of the RUN command under certain conditions such as in a low-speed range.
If the motor's reverse rotation may cause a problem, such as damage to the machine driven
by the motor, set Reverse Rotation Prevention Selection (b046) to "Enabled".
Parameter
No.
b046
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
Function name
Reverse Rotation
00: Disabled
Prevention
01: Enabled (No reverse rotation)
Selection
5-11 Sensorless Vector Control
Default
Data
setting
Unit
00
5-156
5

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