GE A03B-0807-C002 Servo Driver

This servo driver regulates motor speed and position for CNC machine tools. It converts low-level command signals into high-power three-phase output. You can integrate this unit into Fanuc-compatible automation systems seamlessly.

Technical Specifications

Parameter	Value
Model	GE A03B-0807-C002
Category	Servo Driver
Input Voltage	200–230 VAC, 3-phase, 50/60 Hz
Output Current	7.5 Amps RMS continuous
Peak Output Current	15 Amps for 1.5 seconds
Power Rating	1.6 kW continuous
Control Mode	Position, speed, or torque (selectable)
Feedback Device	2000 PPR incremental encoder
PWM Frequency	8 kHz
Communication Interface	RS-485 serial (proprietary protocol)
Protection Functions	Overcurrent, overvoltage, undervoltage, overheating
Dimensions (W x H x D)	7.0 cm × 24.0 cm × 16.5 cm
Weight	2.8 kg (6.17 lbs)
Connector Type	1 × 50-pin ribbon + 1 × 4-pin power + 1 × encoder connector
Component Count	1 power PCB + 1 control PCB + 6 IGBTs + 1 heatsink + 1 cooling fan
Energy Storage	1000 µF DC link capacitor (450 V rating)
Regenerative Circuit	Internal with 30 Ω, 80 W resistor

Power Conversion and Control

This driver converts AC line power into regulated DC voltage for the servo motor. Six IGBT transistors generate a smooth 8 kHz PWM output waveform. The GE A03B-0807-C002 supports three distinct control modes for flexibility. You can select position, speed, or torque control through parameter settings.

Feedback and Precision

A 2000 PPR incremental encoder provides high-resolution position feedback to the driver. The unit closes the servo loop every 125 microseconds for precise motion. Consequently, your CNC axes maintain accuracy within a few microns. The driver also supports encoder simulation output for external monitoring.

Energy Storage and Regeneration

A 1000 µF DC link capacitor stores energy for peak torque requirements. When the motor decelerates, the driver returns excess energy through a regenerative circuit. An internal 30 Ω, 80 W resistor dissipates this power safely as heat. Therefore, the driver maintains stable bus voltage during rapid acceleration and braking.

Protection and Thermal Management

The driver continuously monitors current, voltage, and temperature for fault conditions. A built-in thermistor tracks heatsink temperature and triggers fan operation at 45°C. If the unit exceeds 80°C, it shuts down automatically to prevent component damage. An internal cooling fan runs whenever the driver powers up.

Installation and Connectivity

Mount this driver vertically on a flat metal plate for proper heat dissipation. You need 8 cm of clearance above and below the unit for airflow. A 50-pin ribbon connector carries all command and status signals. Separate terminal blocks handle three-phase motor power and the DC bus supply.

Why Choose This Servo Driver

This driver matches perfectly with Fanuc spindle and servo motor combinations. Its 1.6 kW rating suits small to medium machining centers and lathes. Therefore, this unit works well for machine retrofits or as a spare replacement part.