Rockwell Automation DC3E Non-Regenerative DC Drive User Guide 1/4 - 2 HP, 115/230 VAC - Manual (Page 61)

53 Calibration
CURRENT LIMIT
ATTENTION: Although the CURRENT LIMIT
trimpot is set to 120% of the maximum drive current
rating, continuous operation at that rating may damage
the drive or motor.
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The CURRENT LIMIT setting determines the maximum
armature current output of the drive. It is factory set at
120% of maximum drive current. If you use a lower
horsepower motor, CURRENT LIMIT must be recalibrated
for the motor.
To calibrate CURRENT LIMIT, refer to Figure 13 on
page 59, or use the following procedure:
1. With the power disconnected from the drive, connect a
DC ammeter in series with the armature.
2. Set the CURRENT LIMIT trimpot to minimum (full
CCW).
3. Lock the motor armature shaft. Be sure that the motor is
firmly mounted in order to withstand torque generated
by the motor.
4. Connect power to the drive. The motor should remain
stopped.
5. Set the speed adjust potentiometer or external reference
signal for maximum speed.
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