1 PC Used Fanuc A20B-3300-0261 In Good Condition A2OB-33OO-O261 A20B33000261

A20B-3300-0261 | FANUC Power Mate-i Pentium MMX CPU Module — Model D/H / A02B-0259 / On-Board Chipset Guard / Robot & CNC

Power Mate-i — FANUC's Compact Motion Controller

The Power Mate i is FANUC's compact, stand-alone CNC designed for single-axis and multi-axis machine tools that do not require the full feature set of the Series 16i or 18i. The Power Mate i is commonly used in drilling units, pick-and-place machines, turntables, indexing fixtures, and in-line production stations — machine applications where a dedicated motion controller provides the necessary capability in a compact, cost-effective form.

Within the Power Mate i product range, Model D covers standard single-axis applications and Model H is the expanded variant, supporting larger configurations — more complex motion profiles, higher axis counts, and greater memory requirements. The A20B-3300-0261 is the Intel Pentium MMX CPU module that serves the Model D and H variants, providing the processing performance that the larger Model H configurations require.

Key Specifications

On-Board Chipset Guard — Protection in Industrial Environments

The A20B-3300-0261 includes an on-board chipset guard. This protective element covers the CPU chipset components on the board surface, providing physical protection against:

• Accidental contact or tool contact during installation or maintenance in tight cabinet spaces
• Metallic debris or conductive contamination that could bridge chip contacts
• Mechanical stress transmitted through the board mounting arrangement in high-vibration environments

In robot controller installations, vibration from the robot's motion is a constant environmental factor. The chipset guard adds a degree of robustness to the most sensitive components on the board, contributing to reliable operation in the production environment.

Application Scenarios

Power Mate i-H controller replacement: A Power Mate i-Model H controller driving a multi-axis drilling unit develops a CPU-related alarm. The A20B-3300-0261 is fitted as the replacement CPU card. The controller restores normal multi-axis operation with the Pentium MMX performance level appropriate for Model H configurations.

Robot-integrated motion controller: A FANUC robot uses a Power Mate i-Model D for coordinated auxiliary axis control — driving a workpiece positioner in synchronisation with the robot arm. The A20B-3300-0261 provides the CPU module in this compact controller setup.

FAQ

Q1: Can the A20B-3300-0261 be fitted in a Power Mate i-Model A or Model B controller?

The A20B-3300-0261 is specified for Power Mate i-Model D and Model H (A02B-0259 series controls). Model A and Model B Power Mate-i controllers use different hardware configurations and different CPU card interfaces. Confirm the Power Mate-i model designation from the controller's nameplate before ordering.

Q2: What does "on-board chipset guard" mean in practice for installation?

The chipset guard is a physical cover or protection structure on the CPU card PCB, positioned over the critical chipset components. During installation, the guard should not be removed — it is a permanent part of the board design. During handling, avoid applying pressure directly to the guard. The guard does not require any special installation procedure; the CPU card fits into the controller's CPU slot in the same manner as other A20B-3300 series cards.

Q3: What FANUC controller type is the A02B-0259 designation?

A02B-0259 is a FANUC control unit order designation that identifies Power Mate i controls in a specific hardware configuration. When FANUC documents refer to "A02B-0259 type controls" in the context of the A20B-3300-0261, they are identifying the motherboard and chassis type that accepts this Pentium MMX CPU card. The physical controller unit's order number will begin with A02B-0259 for the relevant Power Mate i-H configurations.

Q4: Does the Pentium MMX processor in the A20B-3300-0261 require a larger power supply than a 486-based card?

The Pentium MMX processor consumes somewhat more power than the 486DX architecture — the core voltage is lower (2.8V for Pentium MMX vs 5V for older 486) but the increased transistor count and faster clock rate result in slightly higher power consumption overall. The Power Mate i controller's power supply is designed to accommodate the A20B-3300-0261's power requirements. No power supply modifications are needed when replacing a 486-generation CPU card with the A20B-3300-0261 in a compatible controller.

Q5: Is the A20B-3300-0261 also used in FANUC robot applications?

Yes. The user description confirms this card is used in both Robot and CNC applications (ROBOT/CNC). The Power Mate i controller is deployed both as a stand-alone CNC and as an auxiliary motion controller within FANUC robot workcells. The A20B-3300-0261 serves the same CPU card role in both application types — the hardware is identical regardless of the deployment context.