Product Description:

The ACK-090-04 is a compact DC servo drive module produced by Copley Controls for the Accelnet CANopen Modules series. Designed for panel or embedded mounting, the unit interfaces with fieldbus networks to regulate torque, velocity, or position of brushless, DC-brush, or stepper motors used in pick-and-place gantries, indexers, and similar automation axes. By converting low-voltage bus power into bidirectional phase current, it provides closed-loop motion control while occupying only 2.50 by 1.60 inches of board space.

The drive delivers a continuous output of 2 Adc, letting attached motors sustain rated torque without thermal overload. During rapid accelerations, it supplies a peak current of 4 Adc for up to 1 s, doubling the available force for short bursts. These current limits correspond to a continuous mechanical output of 0.18 kW and a short-term peak of 0.36 kW. A high-voltage trip activates at 91 Vdc to protect the bus capacitors from regenerative surges. The converter’s switching stage runs at 15 kHz with a minimum pulse width of 220 ns to keep ripple low. Ten opto-isolated digital inputs accept limit, home, or enable signals, and the encoder interface streams differential quadrature up to 5 MHz while providing a regulated 5 V, 250 mA sensor supply.

The drive accepts an analog velocity or torque reference within a range of ±10 Vdc and, for pulse-train positioning, counts step inputs up to 2 MHz without missing edges. Its power stage starts at 14 Vdc for low-inertia motors and reaches full rating when the DC bus rises to 90 Vdc, giving original equipment manufacturers flexibility in battery-powered or rectified-mains applications. Bus integrity is monitored continuously; when line energy falls outside this window, the module disables PWM and asserts a fault via the programmable digital outputs. All command, feedback, and fieldbus connections are routed through edge connectors on one side, allowing several modules to be grouped in dense multi-axis panels.