AEP-090-18 Copley Controls
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The Copley Controls AEP-090-18 is part of the Accelnet CanOPEN Modules series and features a continuous current rating of 6 Amps DC with a peak current of 18 Amps DC for up to 1 second. This module supports 8 digital inputs and 3 digital outputs, with an encoder max rate of 20 million counts per second. Its operating voltage ranges from 20 to 90 VDC and it measures 196.3 by 99.1 by 29.7 millimeters.
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Product Description:
The AEP-090-18 is a DC motor amplifier produced by Copley Controls and supplied in the Accelnet CANopen Modules series. The device converts a unipolar high-voltage bus into bidirectional motor current under commands transmitted over the CANopen fieldbus. By closing current and velocity loops internally, it enables coordinated motion in pick-and-place systems, indexing tables, and other installations that demand submillisecond torque response. Because the module handles command decoding, fault monitoring, and encoder processing inside a narrow enclosure, it simplifies cabinet layouts and shortens wiring runs on distributed machines.
The drive supplies a continuous output of 6 A DC and supports bursts up to 18 A DC for 1 second to overcome inertia during acceleration. It accepts DC sources from 20 V DC to 90 V DC, allowing it to share a common bus with low-voltage linear axes and higher-voltage rotary stages. An output resistance of 0.075 Ω limits conduction loss and stabilizes current regulation. Carrier modulation occurs at 16 kHz, keeping switching artifacts above the audible range, while internal logic doubles the effective ripple frequency to 32 kHz for smoother motor torque. If the heat sink reaches 70 °C, the overtemperature trip disables the output to protect the semiconductors from thermal stress.
Eight digital inputs and three digital outputs convey limit-switch signals, drive-ready states, and fault-relay signals without additional I/O cards. The quadrature or incremental encoder port handles feedback rates up to 20 million counts per second, supporting high-resolution linear encoders on fast gantries. A minimum motor inductance of 200 µH prevents current ripple from exceeding design limits. An auxiliary bus draw of 2.5 W keeps the control electronics powered during DC-link brownouts. The anodized housing measures 196.3 × 99.1 × 29.7 mm and weighs 0.45 kg, allowing the amplifier to mount directly on moving carriages where space and mass are constrained.
