Digital servo drive is compact, economical

Elmo Motion Control's recently launched HARmonica Digital Servo Drive offers 750-W (1-hp) output for controlling brush dc or brushless motors. The servo drive also incorporates various commutation methods, including sinusoidal and trapezoidal vector control; trapezoidal six-step; high-efficiency dc power switching; and distributed networking via CANopen DS-301 protocol.

01/01/2004



Elmo Motion Control's recently launched HARmonica Digital Servo Drive offers 750-W (1-hp) output for controlling brush dc or brushless motors. The servo drive also incorporates various commutation methods, including sinusoidal and trapezoidal vector control; trapezoidal six-step; high-efficiency dc power switching; and distributed networking via CANopen DS-301 protocol.

Basic configuration for HARmonica is a trimmerless velocity servo amplifier. Four models are available: standard and advanced versions, each with either RS-232 or CANopen communication option. Velocity, current, and commutation function adjustments are made through a PC, using RS-232 or CANopen. The drive runs on 12-180 V dc input, while a 24-V dc power supply performs dual duty as an auxiliary and backup power source. Particularly for servo positioning systems, this power backup is an essential safety feature. Software-based tuning can be done manually or automatically. www.elmomc.com

  • 750-W output for brush dc or brushless motors

  • Trimmerless velocity servo amplifier configuration

  • 24-V dc power supply doubles as backup

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