LEESON PWM DC Control: 174299 - Manual (Page 24)

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The MOTOR CURRENT LIMIT setting determines the maximum armature current output of the drive.
Recalibrate the MOTOR CL setting when a lower current limit is required. Refer to the MOTOR CL
settings in Figure 12 or 13, or recalibrate using the following procedure:
1. With the power disconnected from the control, connect a DC ammeter in series with the armature.
2. Set the MOTOR CL trimpot to minimum (full CCW).
3. Set the speed adjust potentiometer to maximum (full CW).
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 MOTOR CL trimpot CW slowly until the armature current is 120% of motor rated
armature current.
7. Set the speed adjust potentiometer, or input voltage to minimum.
8. Remove the power from the drive and unlock the motor shaft.
9. Remove the ammeter in series with the motor armature if it is no longer needed and re-apply
power to the drive.
MOTOR CURRENT LIMIT (MOTOR CL)
m
WARNING
MOTOR CURRENT LIMIT should be set to 120% of motor nameplate current rating.
Continuous operation beyond this setting may damage the motor. If you intend to operate
beyond the rating, contact your Leeson representative.
REGENERATIVE CURRENT LIMIT (REGEN CL)
The REGENERATIVE CURRENT LIMIT setting determines the maximum armature current available
for braking. Set the REGEN CL based on the desired amount of braking.