Potomac Electric
Potomac Electric

BSA12-100 Brushless Servoamplifier

BSA Series Brushless

High-Performance DC Brushless Servo Amplifier

The BSA12-100 is a highly reliable servo amplifier, developed for the ARSR-4 (Air Route Surveillance Radar). These radars are used throughout the world.

Features & Benefits

Small size, rugged construction
Military-style connectors
Full digital control
Accepts +/-10V analog command
Accepts  RS485 MODBUS communication


The BSA12-100 is a flexible product and could be customized for many different industrial and military applications.




  Voltage, AC Peak Current Continuous Current
BSA 12-100 120 15 9



Motor Type Availability
BLDC with Hall sensors



Feedback Type Availability
Halls only



Command Source Availability
Analog input +/-10 V


Mode Of Operation

Mode Availability
Torque Control

Speed Control



Control Input Characteristics
Analog inputs 1 Input +/-10V, 12 Bit Resolution
Digital inputs 1 input, 5 Vdc
Digital outputs 1 output, 15 Vdc
Analog output 1 output, +/- 10 V


BSA is simple and reliable single axis drive for BLDC motors with Hall sensors and continuous current till 9 Amperes.

Features Benefits
Configuration software for PC Fast tuning for customer’s motors, regulators tune, monitoring drives coordinates, parameters tune, 2-channel oscilloscope, system diagnostics. It uses a USB interface for connection to PC.
Programmable digital and analog inputs/outputs Allows customers to choose the events and drive coordinates for changing the modes of work, parameters, control set, and outputs
Test modes Scalar control, Current/frequency control
Configurable protections OverVoltage, Undervoltage, OverCurrent, Short Circuit, I2T, OverTemperature, Incorrect order of power supply. Mode of faults resets manually via USB or power supply switch off/on.
Embedded diagnostics Led indicates the state of the device and its faults (for fast diagnostic without PC connection)
Additional Configurable current limitation, the configuration of Hall sensors order via USB, correction of scale and offset of analog input and output, space vector modulation for PWM with 3-rd harmonic injection for maximum use of DC-bus voltage

Model Number

Model Number


BSA12-100 Dimensions BSA12.PDF