Servo Drives
Harmonic Drive provides digital servo drives for brushless (AC) and brush (DC) actuators. They work with our Harmonic Drive Motion (HDM) software, which you must install on a computer to complete the setup using our parameters. The drives can communicate through CANopen®, MACRO, DeviceNet and EtherCAT®, and you can operate them with indexer, ACSII and discrete I/O, step/direction or PWM or + or 10V commands.
In addition to supporting our encoder protocols, the servo drives are compatible with various motor OEM encoder formats.
AC Servo Drives Back to top
At Harmonic Drive, we prioritize building high-quality digital drives to meet your manufacturing needs. Our catalog of AC bus components includes:

REL
REL combines EtherCAT® networking with total digital motor control in an AC-line-powered package that can run using three- or single-stage mains with a consistent power output of up to 4 kW.

RTL
RTL communicates through CANopen with 100% digital control of brush or brushless motors in an AC system that can operate from three- or single-stage mains with a constant power flow of up to 4 kW.

HA-800
This AC Servo drive features MECHATROKLINK and CC-Link for open field network and autotuning.
DC Digital Servo Drives Back to top
Similar to our AC drives, our DC bus products undergo a meticulous and consistent design and production process to ensure quality and reliability. They include:

DDP
DDP is a high-performance, DC-powered servo drive for controlling position, velocity (using an encoder, Halls or BEMF) and torque of brushless and brush motors.

DCJ
The DCJ is a compact, DC-powered servo drive for controlling a motor's torque, position and velocity. It can run on a distributed control network with external motion controllers or as an independent indexing drive.
Reasons to Consider Our Servo Drives
For over 60 years, Harmonic Drive has produced high-quality servo drives for different manufacturing applications. We're continually innovating to meet and exceed performance expectations.
Sourcing your company's servo drives from us benefits you in these ways:
- Peace of mind: Our fully in-house manufacturing team builds all the products we sell. We adhere to strict quality standards and use our decades of experience to design precision motion control components with your manufacturing needs in mind.
- Access to innovative products: Our drives are Harmonic Drive innovations, which means you'll partner directly with the innovator.
- Reliable quality control: We are ISO 9001:2015 and AS9100 certified, demonstrating our commitment to meeting industry standards and delivering quality digital servo drives. Our experts maintain consistent quality standards to ensure dependable performance.
- Convenience: Our team can customize solutions to your unique OEM specifications. We'll work closely with you to deliver a component that suits your application.
Contact Us for Innovative Servo Drives
Harmonic Drive is a reputable company with a history of spearheading innovation in precision motion control components. We focus on product quality because we care about producing high-performance products. Our team also ensures that you'll receive all the support you need every step of the way.
Contact us online to talk to an expert about your servo drive needs or request a quote.