ACJ-090-09 Copley Controls
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The ACJ-090-09 is a servo drive from Copley Controls and is part of the Accelnet CanOPEN Modules series. It offers a continuous current of 3 Adc and a peak current of 9 Adc, with continuous output power of 267 W and peak output power reaching 800 W for 1 second. The drive is designed for 20 to 90 Vdc input voltage and measures 97.28 by 62.74 by 32.77 mm.
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Product Description:
The ACJ-090-09 is a DC-input servo amplifier manufactured by Copley Controls for the Accelnet CANopen Modules series. Intended for distributed motor control, the module bridges a low-voltage power bus and a CANopen network, producing pulse-width-modulated phase currents that drive brushless or brushed servomotors in compact automation axes. By integrating power conversion and control logic in one package, it allows the drive to be placed near the motor, reducing the amount of wiring routed to the control cabinet.
The amplifier accepts an input range of 20–90 VDC, allowing it to operate with vehicle batteries, rectified DC links, or regulated power supplies without modification. Under continuous duty, it provides 3 ADC and delivers up to 267 W of sustained output power to the motor. For short bursts, it allows a peak current of 9 ADC and can deliver up to 800 W for moves lasting no longer than the one-second peak interval. Current control maintains commanded torque through a dual-shunt topology that measures phase output during every PWM cycle. This approach keeps the response linear across the operating range.
Control bandwidth is supported by a 15 kHz current loop and a velocity and position loop that updates at 3 kHz. The drive supports loads with inductance as low as 200 µH and has a phase resistance of 0.036 Ω, helping limit power loss during operation. Protective thresholds disconnect the output stage if the bus voltage rises above 91 VDC or falls below 14 VDC. PWM operation at 30 kHz shifts switching artifacts outside most feedback frequencies, while a one-second peak timer supervises thermal limits. The encoder port supplies 5 VDC at 400 mA for digital feedback devices. All circuits are housed in an enclosure measuring 97.28 × 62.74 × 32.77 mm, allowing installation on machine frames or inside mobile robots where space is limited.
