FANUC Terminal I/O Unit P/N A03B-0823-C003

Technical Specifications

Model:A03B-0823-C003

Brand:FANUC

System compatibility:Compact terminal type 32-point combined digital I/O unit for FANUC 16i/18i/21i CNC systems. Supports I/O Link bus communication,installed in CNC electrical cabinet,widely used on vertical machining centers and CNC lathes.

Function:Integrated I/O terminal unit combining digital input and output channels. Collects machine side limit switch,proximity sensor signals,output 24VDC transistor signals to control solenoid valves,relays and indicator lights. Realizes data exchange with CNC host through I/O Link.

Installation:DIN rail mounting inside electric cabinet,screw terminal block for field wiring.

Interface:

‑I/O Link bus communication port

‑32 combined digital I/O channels

‑Screw terminal block for field wiring

‑24VDC power supply terminal

‑LED channel status indicators

Circuit feature:Optocoupler isolation input circuit,transistor output drive circuit,per-channel short-circuit and overcurrent protection,signal surge suppression.

Feature:Legacy FANUC compact terminal I/O unit,all-in-one design without needing separate base rack. Common faults:terminal corrosion,channel burnout,I/O link communication failure. Verify CNC system software version before replacement.

Diagnostic:CNC system displays I/O communication or channel alarm when fault occurs;LED indicators show each channel working state.

Power supply:24VDC

Protection class:IP20

Horizontal operating temperature:0℃ ~ +55℃

Storage temperature:-20℃ ~ +80℃

Relative humidity:5%‑90% non‑condensing

Vibration:Complies with machine tool industrial environmental requirement

Weight:0.85kg

Dimensions:200mm ×130mm ×65mm

Certification:CE,UL

Built‑in function

A03B-0823-C003 terminal I/O unit realizes signal exchange between FANUC CNC controller and machine field sensors and actuators. Widely used for CNC machine electrical cabinet spare‑part replacement.

Product Brief

A03B-0823-C003 belongs to FANUC A03B series I/O spare parts family,32-point integrated terminal I/O unit with DI and DO channels. This unit is an independent compact I/O station,no additional base rack required. Confirm CNC system compatibility before ordering. Check I/O link cable and terminal wiring during commissioning. Widely applied for CNC equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation.