LEESON Chassis Mount Regenerative Control: 175721.00 - Manual (Page 38)

Calibration 32
Reverse Torque (REV TQ)
The REV TQ setting determines the maximum torque for
accelerating and driving the motor in the reverse direction. It
also sets the maximum torque for decelerating in the forward
direction. Refer to the recommended REV TQ settings in
Figure 19 on Page 36, or recalibrate using the following
procedure:
1. With the power disconnected from the drive, connect a DC
ammeter in series with the armature.
2. Set the REV TQ trimpot to minimum (full CCW).
3. Set the speed adjust potentiometer for maximum reverse speed.
4. Carefully lock the motor armature. Be sure that the motor is
firmly mounted.
5. Apply line power. The motor should be stopped.
6. Slowly adjust the REV TQ trimpot CW until the armature
current is 120% of the motor nameplate current rating.
7. Turn the speed adjust potentiometer CCW until the motor stops.
8. Remove line power.
9. Remove the stall from the motor.
10. Remove the ammeter in series with the motor if it is no
longer needed.
Warning
REV TQ should be set to 120% of the motor nameplate
current rating. Continuous operation beyond this rating may
damage the motor. The decision to change the reverse
torque setting must be made after considering the gearbox
and drivetrain ratings, duty cycle, and motor characteristics.
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