Current Regulator Adjustment - Aerotech BA10 SERIES User Manual

BA10/20/30 Series User's Manual Installation and Operation
2.7.

Current Regulator Adjustment

The three-phase current regulator circuit is illustrated in Figure 2-12. Details to this
circuit, like the "Pre-amplifier" circuit described in the previous section, are provided so
that the user may optimize gains.
The BA amplifier provides three independent current regulator circuits, one for each
phase of the DC brushless motor (for DC brush motors, only "Phase A" regulator is used).
Regulators "A" and "B" are each provided with a current command from either the
internal "six step" commutation circuit or an external current command input (ICMDA
and ICMDB), depending on the settings of JP11 and JP13.
Two internally isolated circuits, one for phase "A" and the other for phase "B", provide
the motor current feedback signals.
The two current command signals as well as the two current feedback signals are each
summed with the result providing the current command and current feedback signals for
phase "C".
Aerotech, Inc.
Version 1.6 2-17