Product Description:

The BEL-090-06 is a digital motor drive module manufactured by Copley Controls in the Accelnet CANopen Modules series. It is intended for integration into distributed automation networks where it regulates the torque and velocity of brushless or brushed DC motors through the CANopen fieldbus. By combining power electronics with embedded control loops, the module supplies regulated current to the load while exchanging real-time status and command data with a central controller.

The drive delivers a continuous output of 3 Adc and can reach a momentary peak of 6 Adc for up to 1 s during acceleration or shock loading. Current regulation is refreshed every 16 kHz, allowing tight control bandwidth for dynamic axes. PWM switching tops out at 100 kHz, which reduces current ripple and audible noise in low-inductance windings. Internally, the control loop samples the load current at a high rate and compensates for motor back EMF, while an external minimum load inductance of 200 µH protects the transistors from excessive di/dt. The unit also includes a dedicated brake output capable of 1 Adc to manage energy dissipation on vertical or high-inertia mechanisms, and its pulse-width modulation can generate pulse widths as short as 220 ns for fine duty-cycle resolution.

The power stage accepts DC bus voltages up to 90 Vdc and remains operational down to 14 Vdc, making it suitable for battery-based or rectified supplies. Command inputs include a ±10 V analog channel processed with a 12-bit converter, enabling standalone torque or velocity modes without network traffic. Mechanical packaging without a heatsink measures 129 × 86.6 × 50.4 mm, allowing placement in compact control cabinets. Because these dimensions do not include an external heatsink, the installation must provide adequate thermal management. The brake output should also match the motor's mechanical holding requirements.