ACJ-090-03 Copley Controls
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The ACJ-090-03 module is produced by Copley Controls and is part of the Accelnet CanOPEN Modules series. It features a continuous output power of 89 Watts with a peak output power of 270 Watts and can supply a peak current of 3 ADC for up to 1 second. The module has 9 digital inputs, 4 digital outputs, and weighs 0.14 kg.
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Product Description:
The ACJ-090-03 is a DC motor drive module produced by Copley Controls within the Accelnet CANopen Modules series. It mounts near the load and interfaces with a CANopen network to regulate current and velocity loops for brushless or brushed servomotors used in automated machinery. By converting a low-voltage DC bus into pulse-width-modulated phase currents, the unit provides closed-loop control that suits multi-axis pick-and-place, labeling, and small gantry systems where distributed nodes minimize cabinet wiring.
An analog command channel enters the drive through an input with 5.36 kΩ impedance, so upstream signal sources are not heavily loaded. The power stage delivers a continuous phase current of 1 A DC, which provides a sustained thermal output of 89 W to the motor windings, while the output resistance of 0.075 Ω keeps conduction losses low. Internal switching occurs at 15 kHz, and a secondary ripple component at 30 kHz shapes the current waveform seen by the inductive load. The minimum recommended motor inductance is 200 µH to prevent excessive ripple. Nine optically isolated digital inputs accept limit, home, and enable signals, while four digital outputs report drive status to the PLC. A regulated encoder rail supplies 5 VDC at 400 mA for incremental or SSI feedback devices.
During acceleration bursts, the drive can supply 3 A DC for up to 1 s, increasing mechanical torque while limiting thermal stress; the associated peak electrical power reaches 270 W. Quadrature feedback is tracked by a counter that handles edge rates up to 20 MHz, allowing precise position control at high motor speeds. The module has an overall mass of only 0.14 kg, so it can be mounted directly on moving axes without adding significant inertial load.
