ME3-090-10 Copley Controls
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The Copley Controls ME3-090-10 is a three-axis controller from the Bantam M-Axis Controllers series. It features 3 analog inputs with 12-bit resolution, 19 digital inputs, and 9 digital outputs. The device supplies a continuous current of 5 Adc per phase and can provide a peak current of 10 Adc for up to 1 second.
Internal Product Review
The ME3-090-10 is a 3-axis controller from Copley Controls that fits coordinated motion systems very well. Continuous output of 5 Adc/phase with 10 Adc peak current gives the controller confident motor handling under changing load conditions. A 12.5 kHz current loop and 2.5 kHz velocity/position loop support crisp response and strong tuning stability.
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Product Description:
The ME3-090-10 motion controller is manufactured by Copley Controls within the Bantam M-Axis Controllers series. It is a compact multi-axis drive that supervises current, velocity, and position loops for brushless or brushed servo actuators. By coordinating feedback from incremental encoders with command data from a supervisory PLC, the unit generates phase-aligned PWM outputs that keep each motor synchronized during packaging, assembly, or semiconductor handling cycles. Its role is to lower cycle times by localizing fast loop control near the machine while leaving high-level sequencing to the host controller.
It drives 3 axes simultaneously, allowing coordinated moves such as linear interpolation or electronic gearing. Each phase can supply a continuous current of 5 Adc per phase, a level chosen to keep motor windings within thermal limits during sustained motion. The inner current loop closes at 12.5 kHz, so commanded torque changes are enforced every 80 µs for stiff disturbance rejection. For short acceleration bursts, the amplifier delivers up to 10 Adc for 1 s, providing extra headroom when overcoming static friction or bringing loads up to speed. The analog front end accepts three differential inputs at 12-bit resolution, enabling torque or velocity override signals from external sensors without digital latency.
19 digital inputs feed opto-isolated ports so start, limit, and fault switches reach the control logic without ground loops. Complementing them are 9 digital outputs that drive relays or annunciators for real-time status. The PWM switching frequency is set to 25 kHz, placing acoustic energy above the audible band and reducing motor ripple. Outer velocity and position controllers run at 2.5 kHz, enabling millisecond-scale path corrections that follow the command profile closely. A minimum load inductance of 200 µH maintains current stability with low-inductance servomotors, and the 30 Adc input peak capacity helps prevent supply droop when all axes demand surge power.
