Servo and stepper drives. 40 years of them.
Featured Products
Xenus Plus Servo Drives
Copley's top-tier AC servo drives. Native EtherCAT and CANopen, fully digital, runs brush or brushless motors. The current loop and tuning algorithms are why Xenus shows up in semicon and high-end robotics.
Key Specifications:
- Power: Up to 4 kW continuous
- Current: 6A to 20A continuous (18A to 40A peak)
- Voltage: 100-240 VAC single or three-phase
Accelnet DC Servo Drives
DC-powered servo drives — position, velocity, or torque. Comes in micro, module, and panel form factors so you can pick the one that fits the cabinet you have, not the one you wish you had.
Key Specifications:
- Models: ACK (Micro), ACM (Module), ADP (Panel)
- Current: 3A to 20A continuous (6A to 40A peak)
- Voltage: 14-180 VDC
Nano Compact Servo Drives
Tiny digital servo drives for brush and brushless motors. Squeeze into spaces where most drives won't fit — embedded equipment, portable gear, OEM boards.
Key Specifications:
- Models: NPS-090, NPS-180 series
- Current: 5A to 35A continuous (10A to 70A peak)
- Voltage: 9-180 VDC
Junus DC Motor Drives
Digital drives for DC brush motors using Back-EMF feedback for velocity loop. Takes analog or PWM in. Good fit for retrofits and cost-down designs that don't need an encoder.
Key Specifications:
- Models: JSP Series (Panel Mount)
- Current: 5A to 15A continuous (10A to 30A peak)
- Voltage: 20-180 VDC
Stepnet Stepper Motor Controllers
Stepper controllers that run more like servos — closed-loop, with PVT, camming, and gearing modes you usually only see on real servo drives. DC and AC versions. CANopen on board.
Key Specifications:
- Models: STP (Panel), STM (Module), STL (Micro), STX (AC)
- Current: 3A to 5A continuous (4A to 7A peak)
- Voltage: 20-120 VAC or 14-90 VDC
Accelnet Plus DC Servo Drives
The Accelnet you know, with EtherCAT and STO safety baked in. Same compact footprint, panel/module/embedded/vertical mounts. If your machine has a safety circuit and an EtherCAT bus, this is probably what you want.
Key Specifications:
- Models: BEL, BPL, BE2, BP2, AEM, APM, AE2, AP2, AEV, APV
- Current: 3A to 20A continuous (6A to 40A peak)
- Voltage: 14-180 VDC
Accelus DC Servo Amplifiers
Compact DC servo amplifiers built for OEM boards. Current and velocity loops, no fluff, sized to drop into tight spaces. The ASC chip-mount in particular ends up on a lot of custom OEM PCBs.
Key Specifications:
- Models: ASP (Panel), ASC (Chip)
- Current: 6A to 12A continuous (18A to 24A peak)
- Voltage: 14-90 VDC
M-Series Multiaxis Modules
PCB-mount multi-axis modules — three or four axes on a single board. Great for pick-and-place, lab automation, and anywhere you've got coordinated motion but no room for four discrete drives.
Key Specifications:
- Models: MP3, MP4, ME3, ME4
- Axes: 3 or 4 axes per module
- Current: Up to 6A continuous per axis
Argus Ruggedized Drives
Mil-spec servo drives for things that get vibrated, shocked, and dropped into bad temperatures. Sealed enclosures, -40 to +70°C operating range, MIL-STD-810 rated. Defense, aerospace, and outdoor industrial.
Key Specifications:
- Models: GPM (Panel), GEM (Embedded)
- Current: Up to 25A continuous (50A peak)
- Voltage: 14-180 VDC
Integrated Motor Drives
Drive bolted directly to the motor. No power cable run, no separate enclosure, no wiring nightmare. The right move when you're trying to flatten a cabinet build or run distributed motion down a conveyor.
Key Specifications:
- Model: IES-060-30
- Current: Up to 6A continuous (12A peak)
- Voltage: 24-60 VDC
About Copley Controls
Copley Controls is in Canton, Massachusetts, and they've been building servo drives since the early '80s. The lineup runs from tiny Nano modules that fit on an OEM board up through Xenus Plus units pushing 4 kW with EtherCAT, CANopen, and analog interfaces.
What you actually get is consistency. The control architecture is the same across the catalog, so an engineer who learned to tune an Accelnet doesn't have to start over on a Xenus. CME makes setup approachable instead of painful. And the drives end up in places that punish bad electronics — medical equipment, semicon fabs, mil-spec gear — without surprises.
Bravo carries the full line. If you're not sure which family fits your machine, that's a phone call.
Core Capabilities
Control loops that work
100% digital control with EnDat, BiSS, encoder, resolver, and hall feedback. The tuning utilities make it bearable.
Talks to your fieldbus
Native EtherCAT, CANopen, and RS-232 — same drive family across all three. No protocol-specific SKUs to chase.
Whatever form factor you need
Chip, module, panel, integrated, ruggedized. Same control architecture across the catalog so engineers don't re-learn every part.
40+ years of drives
Copley has been doing this since the early '80s. The Xenus and Accelnet lines run in semicon fabs, medical equipment, and defense gear all over.
Software & Tools
CME 2
Copley Motion Explorer. The main tuning tool. Auto-tune, scope, real-time parameter edits. Honestly one of the better drive setup utilities — engineers usually pick it up in an afternoon.
CVM/Indexer 2
Lets you store motion programs on the drive itself — multi-segment profiles, homing, I/O logic. Useful when you don't want a PLC in the loop.
Copley Motion Objects
PLCopen function blocks for EtherCAT masters. Drops into TwinCAT, CODESYS, and the rest of the IEC 61131-3 world without much ceremony.
Copley Motion Library
C/C++ API for direct drive control on Windows and Linux. For people building custom motion apps without a PLC anywhere in the architecture.
Need Copley?
Quotes, sizing help, or just a conversation about which drive fits your move.