Copley Controls Corp 413H DC Brush Servo Amplifier

The Copley Controls Corp 413H is a DC brush servo amplifier engineered for precise motor control across torque, velocity, and voltage feedback modes. Operating from unregulated DC supplies between +24VDC and +225VDC, it delivers continuous output current of 15A @ ~80V and peak current of 30A @ ~80V with settable limits. The amplifier accepts industry-standard ±10V differential control signals and employs a MOSFET H-bridge output stage for four-quadrant bidirectional operation.

Technical Specifications

Input Power Supply: +24VDC to +225VDC (unregulated)

Continuous Output Current: 15A @ ~80V (settable)

Peak Output Current: 30A @ ~80V (settable)

Control Signal Input: ±10V differential, 100kΩ impedance, ±20V maximum rating

Bandwidth: 3kHz (current mode, 200µH load at maximum supply voltage)

PWM Switching Frequency: 25kHz

Load Inductance: Selectable 200µH to 40mH via header socket components

Technology: Surface-mount construction

Key Features

Three operating modes: torque (with encoder feedback), velocity (brush-tachometer feedback for low-speed regulation), and voltage feedback with IR compensation

Differential control signal interface with switch-selectable logic levels

Logic inputs: /Enable, /Pos Enable, /Neg Enable supporting ground-to-enable or ground-to-inhibit configurations

Configurable gain and current limits via internal 40-pin header socket (no soldering required)

DIP switch configuration support

Output short-circuit protection (output-to-output and output-to-ground faults)

Heatplate overtemperature protection with latch-off or self-reset modes (50ms interval)

Undervoltage and overvoltage protection

Status LEDs: Normal/Enable, Power-OK, Fault (Short or Overtemp)

Typical Applications Motor positioning systems requiring closed-loop encoder feedback, speed regulation via brush-tachometer, and cost-effective open-loop speed control in tachless implementations.

Compatibility & Integration The 413H interfaces with standard ±10V control electronics and supports multiple enable/inhibit logic configurations for integration with industrial control cards and embedded systems.