FANUC A16B-1210-0510 is a legacy Power Supply Unit A for compatible FANUC Series 0 and Series 10 CNC controls. It mounts to the master PCB and supplies regulated DC power to the CNC control, display and interface circuits.

FANUC documentation specifies a selectable 200/220/230/240VAC input and +5V, +15V, -15V, +24V and +24E outputs. ENABLE and PA-PB signals monitor power status and abnormal outputs.

A16B-1210-0510 Product Information

Multi-Voltage CNC Power Distribution

The A16B-1210-0510 converts AC input into the regulated rails used by the CNC electronics. ENABLE remains high while all DC outputs are normal and changes state when a fault is detected. The PA-PB contact supports power holding and abnormal-output indication in the configured control.

Compatibility and Nameplate Checks

Confirm the complete marking, including suffixes or revisions after A16B-1210-0510, plus the master-board number, CNC series, input-unit arrangement and connectors. Do not substitute A16B-1211-0850, A16B-1210-0511 or another similar supply solely because its housing appears alike.

Testing and Installation Notes

REACO CNC checks the label, housing, fuses, capacitors, connectors, AC input, every DC output rail, ENABLE signal and stability under load. After replacement, qualified personnel should verify the documented 10.00V reference test point. Isolate incoming power, discharge stored energy and use ESD-safe handling.

Related resources: FANUC CNC and robot parts and FANUC CNC power supply repair service.