503 Copley Controls
Wake Industrial LLC is not an authorized distributor of this product.
The Copley Controls 503 is a DC servo amplifier in the DC Servo Amplifiers series, offering a peak output current of 10 Amps and a peak power of 500 Watts. It provides continuous output current at 5 Amps, supports up to 250 Watts of continuous power, and features an input resistance of 20 kOhms. The amplifier includes an overtemperature shutdown at 70 degrees Celsius and operates with a PWM switching frequency of 25 kHz.
Internal Product Review
The 503 is a Copley Controls DC servo amplifier with 5 A continuous output and 10 A peak output. A 2.5 kHz bandwidth and 25 kHz PWM switching frequency support crisp current response and smooth motor control. A 500 W peak power rating makes the 503 a strong choice for compact motion-control assemblies.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The 503 DC servo amplifier is produced by Copley Controls within the DC Servo Amplifiers series. It converts command voltages from motion controllers into regulated armature currents so brushed servo motors can follow precise velocity or position profiles in automated machinery, pick-and-place axes, or laboratory equipment. By providing linear transconductance and built-in feedback monitoring, the unit closes the torque loop at the drive level, reduces the processing load on the host controller, and simplifies cabinet wiring in multi-axis installations.
The amplifier has a minimum power consumption of 2.5 W, while its power stage can sustain a continuous armature current of 5 A and deliver 250 W to the motor. The current loop has a closed-loop bandwidth of 2.5 kHz, allowing the drive to track rapid load changes without instability. Internal PWM switching occurs at 25 kHz, keeping ripple above the audible range and reducing motor heating. Command inputs have an impedance of 20 kΩ, and a transconductance of 1 A/V translates reference voltages into precise current levels. A current-monitor output reports motor current at a scale of 2 A/V. The host supply powers the control electronics, while two auxiliary rails provide +15 V at 10 mA and +5 V at 30 mA. Combined auxiliary power does not exceed 200 mW.
During transient events, the amplifier can deliver a peak current of 10 A and up to 500 W of instantaneous power for acceleration surges. An overvoltage trip activates at 55 VDC, and the amplifier reports an undervoltage condition below 18 VDC. Thermal shutdown engages at 70 °C to protect the semiconductors from excessive heat. These protective thresholds help prevent electrical and thermal stress during abnormal operating conditions. The current-monitor output also allows external control equipment to observe motor demand and respond when the measured current approaches the permitted range.
