Aerotech BL 10-40, Hardware Manual

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Introduction BL
Chapter 1: Introduction
The BL Series amplifiers are highly reliable linear brushless servo amplifiers that are easily adaptable to drive
brush or brushless servomotors. The BL amplifier package is a complete modular unit that includes heat
sink, metal cover, control and bus power supplies that operate at ±40 VDC (@ 20 amps peak) or ±80 VDC
(@ 10 amps peak).
The BL drives feature self commutation with analog or digital Hall-effect feedback signals and include a 5
VDC, 250 mA supply to power encoders and Hall-effect devices (HEDs). Each model is jumper selectable,
providing the capability to drive both brush and brushless motors. Complete electrical isolation is provided
between the control stage and the power stage for all models of the BL. This is accomplished with a trans-
former isolated control voltage power supply and opto-isolation of the drive signals, current command signals
and fault signal between the control and power stages.
Operating modes include current command, velocity command or dual-phase command (for brushless
modes of operation only). For brush modes of operation, the available operating modes are current command
and velocity command. Differential inputs are used for better noise immunity. Velocity feedback is from
either an encoder or tachometer and logic inputs include directional current limits and shutdown. Fault, cur-
rent, and velocity outputs simplify monitoring drive status. In addition, there is an option to drive three brush
motors in torque mode.
Figure 1-1: BL Linear Amplifier Connection Overview
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