BA Series PWM Amplifiers

Description

Design Features

  • Wide output power range from 10 A peak to 100 A peak at 320 VDC
  • No transformer required; direct connection to AC line
  • Capable of running brushless or single-phase DC brush motors
  • Velocity, torque, and dual-phase mode input command
  • Accepts both encoder or tachometer feedback for velocity control
  • Can be externally commutated
  • CE approval on low-power models

The BA series amplifiers are Aerotech's stand-alone drive for three-phase AC brushless and single-phase DC brush motors. This versatile amplifier can run in velocity mode or torque mode using a self-commutating, low ripple, modified six-step algorithm.

All BA amplifiers accept a standard ±10 VDC as a velocity or torque (current) command from any motion controller.

The dual-phase mode is used for external commutating controllers such as Aerotech's U100I, U500, and U600 position controllers to bypass the BA’s commutation and perform sinusoidal commutation. This provides the smoothest velocity control.

The BA amplifier is based on a 20 kHz IGBT for reliable operation in a compact package. It is completely selfcontained, requiring only AC line power, and the amplifier is fully protected. The DC-isolated power stage minimizes loop noise. The amplifier accepts a quadrature encoder or tachometer input for velocity feedback. The encoder signal is converted to a voltage representing speed.

The BA is available in six models up to 100A peak to match your application power requirements. Standard models are delivered from stock, and custom versions can be engineered to your requirements in minimal lead times.

Specifications

ModelUnitsBA10BA20BA30BA50BA75BA100
Output Voltage (1) VDC 40320(2)
Peak Output Current Apk 10 20 30 50 75 100
Continuous Output Current Apk 5 10 15 25 37 50
Peak Output Power W 2,720 5,440 8,160 13,600 20,160 28,800
Continuous Output Power W 1,360 2,720 4,080 6,800 10,080 14,400
Power Amplifier Bandwidth kHz 2
PWM Switching Frequency kHz 20
Minimum Load Inductance mH 0.8 @ 160 VDC (1 mH @ 320 VDC)
Operating Temperature °C 0 to 50
Storage Temperature °C -30 to 85
Weight kg (lb) 1.1 (2.5) 3.9 (8.5) 5.7 (12.5)
Maximum Shunt Regulator Dissipation W 40 (optional) 40 (optional) 40 100 (10 A Ext.)
Brushless Operation Torque (Current), Velocity, Dual Phase
BrushType Operation Torque, Velocity
Power Input 28-230 VAC, Single Phase, 50-60 Hz 28-230 VAC, 50-60 Hz, 1-3 Phase
Protection Output Short Circuit (phase-to-phase and phase-to-ground); Peak Overcurrent, RMS Overcurrent; DC Bus Overvoltage; Overtemp; Control or Power Stage Bias Power Supply Undervoltage. Galvanic Isolation Between Signal and Power Stages.
Indicators Drive Enable LED Indicator, Power-ON LED. Drive Enable LED Indicator, Power-ON LED. Fault & Overload LEDs
  1. Depends on AC input voltage
  2. 40-80 VDC bus requires external transformer, 110 VAC auxiliary input for control input power

Dimensions

  • BA 10, 20, 30 Series
  • BA 50, 75, 100 Series

Ordering Information

Ordering Example

BA 20 -160 -S

Ordering Options

ProductOutput Current, PeakOperating Bus VoltageInternal Shunt Power Resistor
BA 10, 20, 30,
50, 75, 100		 40
80
160
320		 S

BA Series Amplifiers

OptionDescription

BA10-x
5 A cont., 10 A peak servo amplifier/power supply
BA20-x 10 A cont., 20 A peak servo amplifier/power supply
BA30-320-S 15 A cont., 30 A peak servo amplifier/power supply, w/shunt regulator
BA50-320-S 25 A cont., 50 A peak servo amplifier/power supply, w/shunt regulator 230 VAC, 1 phase input
BA75-320-S 37 A cont., 75 A peak servo amplifier/power supply, w/shunt regulator 230 VAC, 3 phase input
BA100-320-S 50 A cont., 100 A peak servo amplifier/power supply, w/shunt regulator 230 VAC, 3 phase input

Bus Voltage

OptionDescription
-40* 40 VDC bus; 28 VAC input required (use TV0.3-28)
-80* 80 VDC bus; 56 VAC input required (use TV0.3-56)
-160 160 VDC bus; 100-115 VAC input, direct line operation (for 80 VDC bus use TV0.3-56 transformer)
-320 320 VDC bus; 230 VAC input, direct line operation (includes shunt regulator)
*Note: Requires transformer such as TV0.3-28 OR TV0.3-56 for 56 VAC input voltage.

BA Series Amplifier Options

OptionDescription

-S
Add shunt resistor network for BA10 or BA20 (standard on the BA30, BA50, BA75, BA100)
EX: BA20-160-S

BA Accessories

OptionDescription

TV0.3-28
0.3 kVA autotransformer; 28 or 56 VAC out for 40 or 80 VDC bus, 115/230 VAC, 50/60 Hz input
TV0.3-56 0.3 kVA autotransformer; 56 or 115 VAC out for 80 or 160 VDC bus, 115/230 VAC, 50/60 Hz input
TV1.5 1.5 kVA isolation transformer, 115/230 VAC input; 28, 43, 56, 70, 115 VAC output
TV2.5 2.5 kVA isolation transformer, 115/230 VAC input; 28, 43, 56, 70, 115 VAC output
TV5 5 kVA isolation transformer, 115/230 VAC input; 28, 43, 56, 70, 115 VAC output
TB Screw terminal block for BA DB25 control connector
LF AC line filter, general noise supression (not for CE compliance)
UFM AC line filter module (required for BA amplifiers to meet CE compliance)

Motor Feedback (Brushless)

OptionDescription
C15291-50 Feedback cable, BM series brushless motor to controller, 15 ft., MS, DB25
PFC-15 Feedback cable, BM series brushless motor to controller, 15 ft., MS, FL
C18391-50 Feedback cable, BMS series slotless motor to controller, 15 ft., DB25, DB25

Motor Power (Brushless)

OptionDescription
C15801-50 Motor power cable, BA amplifier to: BM75, BM130, BM200, BM250, 15 ft.
C15811-50 Motor power cable, BA amplifier to: BM500, BM800, BM1400, 15 ft.
PMC2-15 Motor power cable, BA amplifier to: BM2000, BM3400, BM4500, 15 ft.
C17891-50 Motor power cable, BA amplifier to BMS series motors, 15 ft.

Motor Feedback & Power (DC brushtype)

OptionDescription
BADC-MSO-15 Integral cable, BAS to 1017, 1035, 1050, 1075, 1135, 1210, 1410 DC motor
with MSO1, 15 ft, MS -> DB25, FL
BAMS-O-15 Integral cable, BAS to 1580, 1960 DC motor with MSO1, 15 ft, MS -> DB25, FL

Control Cables

OptionDescription
BAC2-3 Amplifier cable, BA amplifier to control for brushless series motors, 3 ft.
BAC6-3 Amplifier cable, BA amplifier to control for DC brush series motors, 3 ft.