Product Description:

The 800-1627-S digital loop module is produced by Copley Controls for the XENUS Digital Loop Modules series. It functions as a servo amplifier that converts velocity or torque commands into regulated motor currents, enabling coordinated motion in automated conveyors, pick-and-place arms, and other industrial axes. The unit mounts beside higher-level controllers and provides current regulation, feedback interfacing, and regeneration support in a compact package.

The module provides a continuous output of 12 Adc, allowing it to drive medium-frame brushless motors during sustained duty cycles. Acceleration reserves are available through a peak output of 36 Adc that can be maintained for 1 s before thermal foldback engages. Cabinet feeders experience a maximum draw of 20 Arms, so input protection can be sized accordingly. Stable current regulation requires at least 400 µH of line-to-line motor inductance, and analog sine/cosine feedback is accepted through differential encoder inputs. The encoder port supplies 400 mA from a regulated +5 Vdc rail maintained within ±2% for sensor excitation. Excess bus energy is routed to an internal resistor network that turns off below +380 Vdc, supports 4 kW of continuous dissipation, and must not be connected to a load below 15 Ω.

The analog input path offers a 7 kHz bandwidth, and its converter resolves commands in 12-bit steps, allowing controllers to issue precise torque requests with minimal lag. PWM switching is fixed at 15 kHz, which helps smooth motor torque by reducing current ripple. During rapid deceleration, the regeneration hardware can absorb up to 10 kW until the bus reaches +390 Vdc. At that threshold, surplus energy is diverted to the resistor bank to limit further increases in bus voltage. The command path, converter resolution, and switching frequency support responsive current regulation during rapid changes in motor load.