GE A20B-0008-0480/03A Circuit Board

This circuit board provides control and interface functions for GE Fanuc CNCs. The GE A20B-0008-0480/03A processes signals between the main controller and peripheral devices. It measures 220 mm in width and 160 mm in height. This unit weighs approximately 0.38 kg for cabinet mounting.

Technical Specifications Table

Parameter	Value
Product Model	GE A20B-0008-0480/03A
Brand	GE Fanuc
Category	Circuit Board / CNC Interface
Compatible Series	GE Fanuc CNC Systems
PCB Layers	4-layer circuit board
Surface Finish	Gold-plated pads and connectors
Dimensions (W x H x D)	220 mm x 160 mm x 20 mm
Weight	0.38 kg
Connector Types	2 x 20-pin headers, 1 x 10-pin ribbon port
Internal Components	1 x main processor, 2 x memory chips, 1 x buffer IC
Memory Type	Flash ROM (128 KB) + SRAM (64 KB)
Energy Storage	1 x 0.047 F super capacitor (data retention: 72 hours)
Digital I/O	8 channels (configurable)
Clock Speed	12 MHz
Operating Voltage	5 V DC
Power Consumption	200 mA maximum
LED Indicators	2 x status (Power, Run)
Operating Temperature	0°C to 55°C

Internal Design and Processing Architecture

This circuit board uses a 4-layer PCB with gold-plated contact pads. A main processor runs at 12 MHz for interface control tasks. The GE A20B-0008-0480/03A stores firmware in flash ROM for field updates. SRAM provides temporary data storage during normal operation. A super capacitor retains critical configuration data for 72 hours without power. Consequently, this board maintains settings during short maintenance shutdowns.

Installation and Configuration Guide

First, mount this circuit board onto standoffs inside your CNC cabinet. Next, connect the ribbon cables to matching headers on adjacent boards. Then, connect 5 V DC power supply to the designated terminals. Verify all connector orientations before applying power to the board. The module automatically initializes when you power up the system. Two LED indicators show power and run status. This circuit board works with GE Fanuc CNC systems and compatible interface modules. Always use a grounded ESD strap when handling this board to prevent static damage.