BL Series Linear Amplifiers

Description

Design Features

  • Drive brush or brushless motors
  • Modular design
  • 10 or 20 A peak models
  • Self-commutation
  • Complete electrical isolation
  • Integrated or external power supply

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 provide the designer with servo drive flexibility for use in applications such as CMM (Coordinate Measurement Machines), X-Y stages, inspection and scanning, medical device fabrication, and semiconductor fabrication.

The BL drives feature a self-commutation mode using analog or digital Hall effect feedback signals. The BL drives even 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 in current (torque) mode, velocity mode, etc.

Complete electrical isolation is provided between the control stage and the power stage for all models of the BL series. This is accomplished with a transformer-isolated control voltage power supply and opto-isolation of the drive signals, current command signals, and fault signal between the control and power stages. Each drive is fully protected against control power supply under voltage, rms current limit exceeded, power stage bias supplies under voltage, over temperature, over current, and excessive power transistor dissipation.

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, current, and velocity outputs simplify monitoring drive status. In addition, the BL drive can drive three individual brush motors in torque mode.

Specifications

BL Series Specifications

Units BL 10-40BL 20-40BL 10-80
Peak Output Current(1) Apk 10 20 10
Continuous Output Current(1) Arms 5 10 5
Output Voltage (Brushless)(2) VDC ±40 ±40 ±80
Output Voltage (Brush) VDC 40 40 80
Input Voltage VAC 100 to 230 (Model Dependent)
Peak Power Dissipation (per Phase) watts 360
Peak Output Power(3) watts 675 1350 1350
Continuous Output Power watts 280 560 560
Power Amplifier Gain (Each Phase) A/V 1 2 1
Power Amplifier Bandwidth(4) kHz 2
Minimum Load Inductance mH 0
Min. Load Resistance (Line to Neutral) ohms 0.5
Operating Temperature °C 0 to 50
Storage Temperature °C -30 to 85
Weight kg (lb) 8.5 (18.8)
  1. Actual peak and continuous output current is load dependent.
  2. The BL series can drive each of its phases rail to rail since the drive supply for each phase is not derived from the ± bus voltages.
  3. This specification based on the output power transistors in the saturated (e.g., full on) condition.
  4. Driving BLM-203-A (RLL = 4 W, LLL = 3.2 mH)
  • BLSeriesAmplifiersSpecImage
  • BLSeriesAmplifierSpecImage-2

Dimensions

  • BL Series

Ordering Information

Ordering Example

BL 20 40 A AH

Ordering Options

Series Output CurrentOperating Bus VoltageInput VoltageOptions
BL 10
20
40
80
A
B
C
D
EP
VM1-VM4
CM1-CM3
AH
TP
PKn
CCn
DDP
FLTO
SPO
AUXPWR

BL Series Linear Amplifiers

Option Description
BL1040x Brushless linear amplifier with ±40 V output and 10 A peak current, with cooling fan and isolation transformer
BL1080x Brushless linear amplifier with ±80 V output and 10 A peak current, with cooling fan and autotransformer
BL2040x Brushless linear amplifier with ±40 V output and 20 A peak current, with cooling fan and autotransformer
x = A for 115 VAC single phase input power (standard)
x = B for 230 VAC single phase input power
x = C for 100 VAC single phase input power
x = D for 208 VAC single phase input power
x = EP for external power supply

BL Series Amplifier Options

Option Description
VM1 Brushless motor, electronic tachometer, 0° commutation offset (Aerotech standard)
VM2 Brushless motor, electronic tachometer, 30° commutation offset
VM3 Brush motor, analog tachometer
VM4 Brush motor, electronic tachometer
CM1 Brushless motor, 0° commutation offset (Aerotech standard)
CM2 Brushless motor, 30° commutation offset
CM3 Brush motor
AH Analog Hall
TP Three independent current regulators (one enable/fault)
PKn Peak current output n% of max (where n can equal 6, 13, 19, 27, 33, 40, 46, 54, 60, 67, 73, 81, 87, 94, 100)
CCn Continuous current output before automatic shutdown n% of max (where n can equal 3, 7, 10, 14, 17, 21, 24, 27, 30, 34, 37, 41, 44, 47, 50)
DDP Differential dual phase
FLTO Fault output active low (nonAerotech standard; not failsafe)
SPO Shutdown input active low (nonAerotech standard; not failsafe)
AUXPWR Auxiliary power option

Feedback Cables

Option Description
C1529150 Feedback cable, BM series brushless motor to controller, 15 ft, MS, DB25
PFC15 Feedback cable, BM series brushless motor to controller, 15 ft, MS, FL
C1839150 Feedback cable, BMS series slotless motor to controller, 15 ft, DB25, DB25

Motor Power (Brushless) Cables

Option Description
C1580150 Motor power cable, BL amplifier to : BM75, BM130, BM200, BM250, 15 ft
C1581150 Motor power cable, BL amplifier to : BM500, BM800, BM1400, 15 ft
PMC215 Motor power cable, BL amplifier to : BM2000, BM3400, BM4500, 15 ft
C1789150 Motor power cable, BL amplifier to BMS series motors, 15 ft

Control Cables

Option Description
BAC23 Amplifier cable, BL amplifier to control for brushless series motors, 3 ft
BAC63 Amplifier cable, BL amplifier to control for DC brush series motors, 3 ft