Copley Controls Corp 800-262 DC Brush Servo Amplifier

The Copley Controls Corp 800-262 is a four-quadrant DC brush servo amplifier engineered for precision motor control across industrial applications. This MOSFET H-bridge output stage accepts standard ±10V control signals and operates in torque, velocity, or voltage feedback modes with IR compensation. Configurable via internal 40-pin header socket, the amplifier allows gain and current-limit adjustment without soldering, accommodating load inductance from 200 µH to 40 mH. Individual peak and continuous current limits, plus a settable peak current time limit, protect against motor and amplifier overload while enabling high-acceleration performance. The unit includes output short-circuit and heatplate overtemperature protection.

Technical Specifications

Input Supply: +24 to +225 VDC unregulated

Control Signal Input: Differential reference, ±10V maximum, 100 kΩ input impedance

Peak Output Current: 10 to 30 A (selectable)

Continuous Output Current: 5 A

Maximum Output Voltage: 50 V

PWM Switching Frequency: 25 kHz

Load Inductance Range: 200 µH to 40 mH (header-selectable)

Logic Input Voltage: 0 to +24V

Reference Gain Pot: Attenuates input 100% to 0%

Key Features

Four-quadrant bidirectional acceleration and deceleration

Selectable enable inputs with ground-to-enable or ground-to-inhibit logic configuration

Settable peak current time limit matching motor thermal and commutation requirements

LED status indicators (green for normal operation)

Compact form factor: 0.17 lbs

Control Modes

Torque mode

Velocity mode with brush-tachometer feedback or open-loop speed control

Voltage feedback mode with IR compensation for tachless operation

Typical Applications Precision industrial motor control, servo-driven automation, open-loop and closed-loop speed regulation, and applications requiring flexible current-limit configuration.