MANUAL# 5005-2040-000-F UPDATED: 6/1/2021
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D. Calibration of the Current Mode of a High Performance Drive
(SMA5005-4 Series)
The Drive in this configuration receives an analog, bi-polar input command, which is proportional to
the required motor current (motor torque). The following potentiometer (pot) will be set during
calibration: (Note: Balance Pot is a 20-turn pot.)
Calibration is minimal compared to standard performance Drives. The Drive will be custom tuned at
the factory for the specific application. Therefore, voice coil/motor parameters, operating voltage,
and desired current loop bandwidth are required upon ordering. The only user tunable parameter is
balance/current offset.
PROCEDURE:
1. Apply main power and fan power. Visually confirm a green LED. Depending on the
configuration of the Inhibit and Reset pins, it may be necessary to make appropriate
connections to those terminals before the Drive will be enabled and energize the motor.
2. The Motor should be stopped or turning slowly. Set the Balance Pot for 0V across DC
Input/Motor Output pin 4 to DC Input/Motor Output pin 5.
3. If the motor is rotating in the wrong direction for a given input polarity, power down and reverse
the motor leads.
4. Calibration complete.
Name of Pot
Notes
BALANCE POT
Used to null any offset in the system.
