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.
