1. Product Introduction

1.1 Part Number

1.2 Product Type

1.3 Code Definition

• A02B: FANUC CNC system series code

• 0303: Hardware base model code

• C074: Functional configuration and interface version code

1.4 Application

2. Technical Specifications

• Rated Working Voltage: DC 24V ±10%

• Operating Temperature: 0℃ ~ +55℃

• Storage Temperature: -20℃ ~ +70℃

• Relative Humidity: 10% ~ 90%, non-condensing

• Installation Type: Standard control cabinet slot plug-in mounting

• EMC Standard: Industrial grade electromagnetic interference resistance

• Working Mode: Support 24-hour continuous stable operation

• Insulation Grade: Comply with industrial electronic safety standards

3. Product Features

1. Industrial-grade circuit design, stable performance and strong anti-electromagnetic interference ability.

2. Standard A02B-0303 series overall size, high compatibility and interchangeability.

3. C074 dedicated configuration with complete interface definition, perfectly matching original equipment.

4. Built-in over-current, over-voltage and anti-static protection circuits to avoid component damage.

5. Strict component screening and aging test, low failure rate and long service life.

6. Simple structure, easy installation, disassembly and daily maintenance replacement.

4. Installation Instructions

1. Cut off the equipment main power supply completely before installation and maintenance.

2. Take anti-static protection measures to prevent static electricity from damaging the circuit board.

3. Confirm the part number A02B-0303-C074 meets equipment matching requirements.

4. Clean the cabinet mounting slot, remove dust, metal scraps and foreign matter.

5. Align the circuit board with the guide slot, insert smoothly and fix in place.

6. Tighten mounting screws evenly; over-tightening is forbidden to prevent PCB deformation.

7. Connect power and signal cables strictly according to interface marks.

8. Recheck all connections, close cabinet door, then perform power-on test run.

5. Operation Precautions

1. Only use rated standard power supply; unstable or non-standard voltage input is prohibited.

2. Hot plugging and unplugging the circuit board are strictly forbidden when power is on.

3. Do not apply in environments with heavy dust, corrosive gas, water splash and strong vibration.

4. Keep away from high-power inverters and strong electromagnetic interference sources.

5. Do not disassemble, modify or replace internal components without authorization.

6. Immediately power off and inspect in case of system alarm, abnormal signal or startup failure.

6. Maintenance and Storage

6.1 Daily Maintenance

6.2 Storage Environment

6.3 Storage Conditions

6.4 Handling Requirements

6.5 Shelf Life

7. Quality Statement

1. A02B-0303-C074 complies with FANUC CNC industry manufacturing and testing standards.

2. All products pass functional test, aging test and full quality inspection before delivery.

3. This manual is applicable to original and compatible replacement parts of A02B-0303-C074.