FANUC A20B-8000-0341 is the printed circuit board used in the AIA16G 16-point AC digital input module for FANUC I/O Unit-MODEL A systems. It receives 100–115VAC field input signals and transfers their ON/OFF status to the associated CNC or robot control system.

The board is associated with complete module number A03B-0819-C107 and earlier A03B-0807-C107 configurations. A20B-8000-0341 is the internal PCB number, so the supplied item and included terminal hardware should be confirmed from the quotation or product photos.

A20B-8000-0341 Product Specifications

AIA16G AC Input Operation

The AIA16G monitors sixteen external AC input signals, with all sixteen points sharing one common circuit. Individual LEDs provide visual input-status indication. The documented response time is the internal module value; total machine response also depends on the CNC, PMC or robot-controller scan time.

PCB and Complete Module Identification

A20B-8000-0341 identifies the internal PCB, while A03B-0819-C107 identifies the assembled AIA16G module. Confirm whether the order requires the bare PCB, PCB with terminal block, or complete module assembly. The supplied configuration should match the product photos and quotation.

Compatibility and Installation

Verify the original A20B and A03B numbers, input voltage, terminal layout, base unit and I/O Link configuration. Do not substitute a 24VDC input board or an AC output module because the connector appears similar. Installation should be performed with all control and field power isolated by qualified personnel.

Related resources: FANUC CNC and robot parts and FANUC I/O module and PCB repair services.