BTM-090-10 Copley Controls
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The Copley Controls BTM-090-10 is part of the Bantam M-Axis Controllers series and has overall dimensions of 53.3 x 45.7 x 15.2 mm, weighing 0.037 kilograms. It features a continuous output current of 5 Adc and peak output current of 10 Adc, with a continuous output power of 427 W and peak output power of 855 W. The controller operates with an input voltage range from 20 to 90 Vdc and a PWM switching frequency of 33 kHz.
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Product Description:
The BTM-090-10 is a single-axis amplifier from Copley Controls that belongs to the Bantam M-Axis Controllers series. Intended for use in distributed motion systems, the module converts low-level command signals into motor drive currents for compact DC brushless or brushed stages. By integrating power electronics and signal conditioning in a small board-level package, it lets machine builders position axes precisely while keeping cabinet space and wiring to a minimum. This controller suits laboratory instruments, semiconductor tooling, and miniature pick-and-place modules where tightly regulated torque and velocity are required. Its compact layout also supports placement close to the actuator, which can help simplify routing in densely packed equipment.
Its continuous output capability is 5 Adc, providing steady current to the motor windings without thermal derating. For short bursts, the unit supplies 10 Adc, and this peak is allowed for 1 s to protect silicon and copper paths. The amplifier delivers 427 W continuously and up to 855 W during rapid moves. A 0.075 Ω output resistance limits I²R losses, while the 200 µH minimum load inductance keeps ripple under control. Current is pulse-width modulated at 33 kHz, a switching frequency that reduces audible noise and eases output filtering. This output behavior supports acceleration, settling, and steady motion without requiring a larger amplifier for compact axes.
Operating voltage flexibility comes from an HV bus that accepts +90 Vdc at the upper limit and remains functional down to +20 Vdc, allowing the module to run from battery stacks or regulated supplies. Command information enters through an analog reference range of ±10 Vdc, and the 100 kΩ input impedance helps prevent loading of upstream motion cards. Two isolated digital outputs can switch external devices up to 30 Vdc, while the built-in Hall supply provides +5 Vdc at 250 mA for commutation sensors. The analog command path and isolated outputs allow the module to interface cleanly with supervisory controls and small auxiliary devices in compact assemblies. Mechanical integration is simplified by an outline of 53.3 × 45.7 × 15.2 mm and a mass of 0.037 kg, so multiple amplifiers can be mounted close to each axis without stressing lightweight frames.
