Product Description:

The 800-1474 is a DC servo amplifier produced by Copley Controls as part of the DC Servo Amplifiers series. It conditions power and command signals so a motion controller can accurately regulate brushed or brushless DC servo motors used in pick-and-place modules, web handling lines, and general automation axes. By supplying controlled current rather than raw voltage, the amplifier closes the torque loop at the drive, improving response times and eliminating motor-mounted power components.

The current loop bandwidth reaches 3 kHz, allowing tight speed and position correction when paired with high-resolution feedback devices. A continuous output capability of 10 A supports steady-state loads, while short bursts up to 20 A accommodate acceleration or shock events without saturation. Pulse-width modulation is executed at 25 kHz; this switching rate places inverter noise above most audible ranges and reduces ripple current in the motor windings. Protection thresholds are integrated so the unit disconnects at an overvoltage of 390 VDC or when the heat sink reaches 70 °C. Continuous thermal loading is managed through a 61 W dissipation rating, and input supply draw is limited to 16 A with a measured inrush of 37 A at power-up.

An output on-resistance of 0.15 Ω minimizes conduction losses and improves efficiency during high current demand. The amplifier requires a minimum load inductance of 400 µH, ensuring stable current regulation with standard industrial motors. Undervoltage trip occurs at 45 VDC to avoid control dropout, and a 20 A / 250 V fuse protects upstream wiring. Idle operation generates only 7 W of heat, assisting cabinet thermal planning. Mechanical integration is straightforward: the package measures 190 × 174 × 69 mm and weighs 1.69 kg, so it can be panel-mounted inside compact control enclosures without additional support hardware.