ACJ-090-03-S Copley Controls
Wake Industrial LLC is not an authorized distributor of this product.
The Copley Controls ACJ-090-03-S is part of the Accelnet CanOPEN Modules series and features a continuous current of 1 Adc with peak current reaching 3 Adc for 1 second. It operates with a maximum bus voltage of 90 Vdc and delivers continuous power of 89 W, with peak output power of 270 W.
Internal Product Review
The ACJ-090-03-S is a Copley Controls Accelnet CanOPEN motion control module with 90 Vdc max bus voltage and 89 W continuous power. Encoder interpolation at 1024 counts/cycle and 230 kHz encoder line frequency support precise closed-loop response. Peak output power of 270 W for 1 s makes this module an excellent choice for high-response motion applications.
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Product Description:
The ACJ-090-03-S is a compact, DC-powered servo drive module produced by Copley Controls for the Accelnet CANopen Modules series. It is used in industrial automation to regulate current and velocity loops for brushless or brushed servo motors while communicating with a higher-level controller over the CANopen fieldbus. By converting a DC bus supply into high-frequency pulse-width modulation outputs, the unit delivers controlled torque and speed to motion axes in packaging, semiconductor, and material-handling equipment. Its module format supports installation in systems where space is limited and centralized motion commands must be distributed among multiple axes.
The drive delivers a continuous output current of 1 A DC, which provides 89 W of sustained electrical power to the motor terminals. For rapid acceleration, it can supply 3 A DC for up to one second, producing 270 W of peak power before the internal timer limits the burst. A maximum bus voltage of 90 V DC feeds the power stage, and a minimum load inductance of 200 µH is required to keep current ripple within acceptable limits. The H-bridge uses a 15 kHz pulse-width modulation carrier with a 30 kHz ripple frequency. The low output resistance of 0.075 Ω reduces conduction losses. Protective logic disables the drive at 91 V DC to prevent an overvoltage condition and at 14 V DC to avoid control dropout.
The digital encoder interface interpolates raw quadrature signals to 1,024 counts per cycle and accepts line frequencies up to 230 kHz without losing edge integrity. The encoder port can source 400 mA, allowing it to power compatible optical or magnetic sensors directly. Thermal monitoring shuts down the amplifier at 70 °C, protecting internal components from excessive heat. Current and voltage shutdown functions provide additional protection during overloads or abnormal supply conditions. These safeguards operate within the drive electronics and respond without requiring a separate protection module. Stable encoder processing also supports accurate velocity feedback when the connected motor operates across rapidly changing speed profiles.
