Our new universal brushless servo drives (BLu series) combine an all digital design, sinusoidal commutation, multiple control modes, compact size with a 24-48 VDC input supply.


  • Ease to Use
  • Reliability
    • Opto-isolated I/O
    • Digital Protection Circuits
    • Surface Mount Technology
  • Flexibility
    • 100W and 200W versions
    • Compatible with both Brushed and Brushless motors
    • Control Modes:
      • Analog Input
      • Digital Input
      • Programmable Indexer
      • PC/PLC host control mode via RS-232/RS-485

Our BLu servo drives are available in 3 versions: D, S and Si.

Command Inputs
  • Analog ±10V 12 bit
  • PWM and Direction
  • Analog ±10V 12 bit
  • PWM and Direction
  • Pulse & Direction
  • Slave to master encoder
Control Modes
  • Torque or Velocity
  • Torque or Velocity
  • SCL Host Mode
  • X Command Mode
  • Si Programmer
  • SCL Host Mode
  • Alarm Reset
  • Limit Switches
  • Servo Enable
  • Alarm Reset
  • Limit Switches
  • Servo Enable
  • Alarm Reset
  • Limit Switches
  • Servo Enable
  • Up to 6 User inputs
  • Alarm
  • Alarm
  • In Position
  • Alarm
  • In Position
  • Brake
  • 4 User Outputs
  • RS-232 (setup)
  • RS-232 (setup & SCL)
  • RS-485 (SCL mode Only)
  • RS-232 (setup & SCL)
  • RS-485 (SCL mode Only)

Feature Table BLu
Command Inputs Analog ±10V 12 bitYY
PWM and DirectionYY
Pulse & DirectionY
CW and CCW PulseY
Master EncoderY
Command Modes SCL Command LanguageYY
Si IndexerY
X Command ModeY
Logic Input Functions Alarm ResetYYY
Counter ResetYY
Limit SwitchesYYY
Servo EnableYYY
Logic Output Functions AlarmYYY
In PositionY

Quick Tuner™ Configuration Software

Quick Tuner automates the commissioning process by providing a quick, easy method for configuring the drive, setting up the motor and tuning the system. The Timing Wizard makes setting up the motor a simple process with no need for the rewiring and troubleshooting often associated with configuring a drive to a motor. If you are using a brushless motor supplied by TOPS, configuration files are supplied with Quick Tuner.

Commissioning your system is done in 3 easy steps:

Drive Configuration Screen
1. Configure the drive

Select the Control Mode then enter values for:

  • Maximum Error
  • Positioning Error Fault
  • Electronic Gearing
  • Maximum Speed
  • Acceleration
  • Brake Delay

Motor Setup Screen
2. Setup the motor

If you are using one of TOPS motors, simply choose the configuration file and load it. And then enter your settings for Continuous and Peak Current.

If you are using another brand of motor, use the Timing Wizard to automatically determine the motor parameters.

System Tuning Screen
3. Tune the system
  • Enter a sample move
  • Select the variables you wish to plot
  • Start the test
  • View results on the Oscilloscope panel
  • Adjust system gains for optimum response
   You’re Done!

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