A02B-0120-C121 FANUC MDI Keypad Unit

FANUC A02B-0120-C121 Separate-Type MDI Keypad Unit for Series 16/18 CNC

Technical Specifications

• Brand: FANUC
• Model: A02B-0120-C121
• Series: FANUC Series 16/18 CNC
• Category: Separate-type MDI keypad unit (keypad only, no display)
• Supply voltage: The manufacturer does not publish a value for this order code, because the CNC control unit powers the MDI unit internally.
• Power supply capacity: 0 A — the CNC control unit feeds the keypad internally (GFZ-63523EN/03 Table 3.2.1(c), p.32).
• Communication ports: None. This passive component carries no built-in communication interface.
• Operating temperature: 0 to 55 °C — family-level reference from GFZ-63523EN/03 p.233; confirm for your order code.
• Storage temperature: -20 to 60 °C — family-level reference from GFZ-63523EN/03 p.233; confirm for your order code.
• Relative humidity: 75%RH or less, with no condensation (GFZ-63523EN/03).
• Weight: 1.3 kg for the stand-alone MDI unit (GFZ-63523EN/03 p.486).
• Dimensions (H×W×D): Not published for this specific order code.
• Lifecycle status: Legacy — the Series 16/18 control generation is a legacy FANUC platform (last verified: 2026-09).

Key Performance Notes

• Environmental tolerance: The 0 to 55 °C operating window suits most machine-shop floors, and the unit tolerates storage down to -20 °C.
• Humidity resistance: The keypad handles up to 75%RH without condensation, which covers typical workshop air.
• Noise immunity: The keypad relies on the CNC control unit for signal conditioning, because it carries no active electronics of its own.
• Power draw: The unit draws 0 A from the supply, since the control unit powers it internally.
• Measurement and resolution specs: FANUC publishes no measurement range, frequency response, sensitivity, linearity, or resolution figures for this passive keypad, because it performs no analog measurement.

Installation Guide

• Power down the FANUC Series 16/18 control unit and lock out the main breaker before you start.
• Remove the old MDI unit from the panel and keep the mounting screws in a safe tray.
• Connect the keypad ribbon cable to the matching connector on the CNC control unit.
• Seat the A02B-0120-C121 into the panel cutout and tighten the mounting screws evenly.
• Restore power and test every key, then confirm the display responds to each keypress.
• Verify offset entry and program editing before you return the machine to production.

Package List

• 1 × FANUC A02B-0120-C121 separate-type MDI keypad unit
• 1 × Keypad ribbon cable (as supplied)
• 1 × Mounting screw set
• 1 × Protective shipping carton

Shipping

• We ship worldwide through FedEx, UPS, and DHL.
• We dispatch in-stock orders within 5 days.
• We pack each unit in a shock-resistant carton to protect the keypad during transit.

FAQ

• Q: Does the A02B-0120-C121 include a display?
  A: No. This is a separate-type MDI keypad unit, and it ships without a display. You pair it with the existing display on your Series 16/18 control.
• Q: What operating temperature does this MDI unit support?
  A: The family reference lists 0 to 55 °C for operation and -20 to 60 °C for storage. Confirm these values against official FANUC documentation for your order code.
• Q: Does the keypad need its own power supply?
  A: No. The CNC control unit powers the MDI unit internally, and the power supply capacity is 0 A.
• Q: Does this unit have communication ports?
  A: No. It is a passive component with no built-in communication ports. It communicates through the control unit's keypad interface.
• Q: How much does the unit weigh?
  A: The stand-alone MDI unit weighs 1.3 kg, per the FANUC manual reference.
• Q: Is the product new and in stock?
  A: Yes. We offer brand-new original units, and we hold stock for immediate order processing.
• Q: How fast do you ship?
  A: We dispatch within 5 days, and we ship through FedEx, UPS, and DHL.
• Q: What is your return policy?
  A: We support returns within 30 days of delivery.