GE Fanuc A03B-0819-C161 Relay Output Module

The GE Fanuc A03B-0819-C161, also cataloged as the A03B-0819-C161 Relay Output Module, operates as a dedicated hardware component for discrete load switching within GE Fanuc I/O Model A control platforms. This 16-point relay output board (type AOR16G) provides galvanically isolated physical execution for medium-power AC and DC industrial loads. Engineered for direct integration into modular I/O rack bases, it manages field actuator control without requiring external interposing relays.

Hardware Specifications

Backplane Bus Communication and I/O Density Scaling

The functional architecture of the GE Fanuc A03B-0819-C161 is built for high-reliability load switching within industrial automation networks:

• Backplane Bus Communication Velocity: High-speed parallel switching logic over the I/O bus enables low-latency transfer of output register states directly to internal relay coil drivers.
• I/O Density Scaling: Integrates 16 high-capacity 2 A relay contacts within a single compact module footprint, optimizing cabinet space for control valve and contactor driving loops.
• Firmware Flash Compatibility: Fully compatible with standard GE Fanuc PMC and CNC backplane control architectures, maintaining standard coil memory assignment without complex address remapping.

Frequently Asked Questions

Q: What is the maximum switching capacity per output point on the A03B-0819-C161?

A: Each individual relay channel supports up to 2 A continuous load current at maximum voltage limits of 250 VAC or 30 VDC.

Q: Can the A03B-0819-C161 module be hot-swapped while the base rack is energized?

A: No, power to the rack unit and external field power circuits must be completely switched off before removing or installing the module to protect edge connector contacts from electrical arcing.

Field Installation Guidelines

When mounting and wiring the A03B-0819-C161 module in field enclosures, follow these core installation procedures:

• Isolate all AC/DC incoming supply sources and main rack backplane power prior to module handling.
• Utilize proper ESD preventive measures, including grounded wrist straps, during hardware installation.
• Securely latch module retaining clips into the base slot to maintain proper physical edge contact engagement with the backplane.
• Install external inductive surge suppressors (RC networks for AC, flyback diodes for DC) across inductive loads to prolong relay contact operating life.
• Maintain strict routing separation between relay output field cables and low-voltage analog or communication signal lines inside cable conduits.