ACJ-090-09-S Copley Controls
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The Copley Controls ACJ-090-09-S is part of the Accelnet CanOPEN Modules series. This module delivers a continuous current of 3 Adc with peak current up to 9 Adc and features a peak output power of 800 W, while supporting an analog encoder frequency of 230 kHz and a step command rate of 2 MHz. It provides encoder interpolation of 1024 counts per cycle and uses a +5 Vdc encoder supply.
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Product Description:
Copley Controls produced the ACJ-090-09-S drive as part of the Accelnet CANopen Modules series. The module is a compact DC servo amplifier that interfaces with a CANopen network to regulate brushed or brushless motors in automated machinery. It converts motion commands from a controller into phase-modulated power, providing position or velocity control without external relays. In industrial automation systems, the device occupies a small panel slot yet delivers the closed-loop accuracy required for packaging axes, pick-and-place heads, and general factory motion stages.
The power stage supplies a continuous motor current of 3 A DC, which provides a sustained output capability of 267 W when the load inductance is at or above the recommended minimum of 200 µH. Within this operating range, the current loop closes at 2.5 kHz, so torque commands are tracked with low latency while the PWM carrier produces a 30 kHz ripple band that remains outside most mechanical resonance ranges. Position feedback is accepted through incremental encoders, and an internal interpolator increases analog encoder resolution by 1,024 counts per cycle while supporting analog encoder signals up to 230 kHz. The encoder interface is energized by +5 V DC and can supply up to 400 mA to external sensors, eliminating the need for separate sensor power connections on the machine.
For rapid acceleration, the drive can deliver 9 A DC for intervals of up to one second, producing a peak motor output of 800 W before returning to its continuous rating. The low phase output resistance of 0.075 Ω minimizes I²R losses during these surges, while thermal algorithms limit exposure to protect the power devices. Digital step and direction inputs accept rates of up to 2 MHz, allowing external indexers to bypass the CAN bus for microstepping tasks. Power quality is monitored continuously, and operation is inhibited below 14 V DC or above the 91 V DC ceiling to prevent saturation and regenerative overvoltage events in the DC link.
