A16B-1200-0880 Fanuc PCB Board A16B12000880 AI6B-I2OO-O88O

A16B-1200-0880 | FANUC Power Mate A and B Servo Control PCB — Compact CNC Servo Drive Board

FANUC Power Mate — Compact CNC Servo Control

The FANUC Power Mate series represents a class of compact CNC controllers designed to be integrated directly with servo drive systems. Where standard FANUC CNC systems use a separate control cabinet connected to standalone servo drives, the Power Mate embeds the CNC control intelligence within or alongside the drive hardware itself.

The A16B-1200-0880 is the dedicated servo control PCB for both Power Mate A and Power Mate B controllers. It manages the servo loop execution and control signals for the axes driven by the Power Mate system.

Key Product Information

Servo Control PCB Function

The A16B-1200-0880 performs the servo axis control function within the Power Mate system:

Velocity loop execution: The servo control PCB receives position commands from the Power Mate's CNC CPU and executes the velocity control loop — computing the motor speed command required to achieve the commanded position at the required rate.

Current regulation interface: The servo PCB provides the control signals to the drive's power stage, regulating the motor current that produces the required torque.

Feedback interface: Encoder feedback from the servo motor connects to the servo control PCB, closing the velocity and position loops in real time.

Application Scenarios

Power Mate A servo control fault: A FANUC Power Mate A controller develops servo alarms — axis motion stops and servo fault codes are displayed. The A16B-1200-0880 is identified as the servo control PCB fault. Replacement restores servo axis control.

Power Mate B maintenance: A Power Mate B-equipped grinding machine undergoes planned maintenance. The A16B-1200-0880 servo control PCB is replaced as part of the drive electronics renewal.

FAQ

Q1: What is the FANUC Power Mate, and how does it differ from a standard FANUC CNC?

The Power Mate is a compact CNC controller integrated with or directly adjacent to the servo drive system. Standard FANUC CNCs (Series 0, 16, 18) are full-featured machine controllers in a separate cabinet. The Power Mate is designed for simpler, single-to-limited-axis applications — CNC functionality in a compact form factor, directly controlling servo drives without a full CNC cabinet installation.

Q2: Does A16B-1200-0880 serve both Power Mate A and Power Mate B?

Yes. The servo control PCB A16B-1200-0880 is confirmed for both Power Mate A and Power Mate B controllers. Both share this common servo control board architecture. The compatible controller model determines any software or parameter differences — the hardware board itself is common to both variants.

Q3: What servo alarms indicate an A16B-1200-0880 fault?

Servo faults associated with the servo control PCB typically appear as servo amplifier alarms, current loop faults, or velocity control errors in the Power Mate's alarm display. These are distinct from encoder alarms (which point to the motor or encoder cable) and from power supply faults. If encoder and power supply are verified healthy but servo alarms persist, the A16B-1200-0880 is the next diagnostic step.

Q4: Does replacing A16B-1200-0880 require servo parameter re-entry?

Servo parameters for the Power Mate axes reside in the controller's parameter memory — separate from the servo control PCB. After fitting the replacement board, the Power Mate re-applies existing servo parameters. Verify servo response at low speed before returning to production. If the Power Mate's parameter memory was also affected, restore from a backup before testing.

Q5: What ESD precautions apply when handling A16B-1200-0880?

Handle with a grounded anti-static wrist strap on an ESD-safe mat. The servo control PCB contains electrostatic-sensitive components. Store and transport in anti-static packaging. Power down the Power Mate controller completely and verify all drive capacitors are discharged before removing or fitting this board.