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The FANUC A03B-0815-C002 I/O Module is an original and high-precision input/output unit designed for FANUC CNC systems. This module ensures efficient signal transmission between the CNC control and external devices, delivering stable and accurate performance in demanding industrial automation environments.
As part of FANUC’s proven A03B-series, the A03B-0815-C002 offers exceptional reliability, robust electrical insulation, and long-term durability—making it a preferred choice for users seeking consistent control accuracy and low maintenance downtime.
High-Speed Data Processing:
Capable of fast signal transmission for precise and synchronized CNC machine operation.
Reliable Electrical Design:
Built with industrial-grade insulation and noise suppression to prevent interference in complex automation setups.
Compact and Modular Construction:
Space-efficient design suitable for modern control cabinets and easy module replacement.
Seamless FANUC Compatibility:
Fully compatible with FANUC Series 0i, 16i, 18i, 21i, and 31i control systems.
Proven Reliability:
Tested under real manufacturing conditions to meet FANUC’s rigorous quality standards for stability and endurance.
| Specification | Details |
Model Number | A03B-0815-C002 |
Product Type | FANUC I/O Module |
Function | Digital Input/Output Signal Control |
Input Voltage | 24V DC |
Installation Type | Rack-mounted |
Compatibility | FANUC 0i / 16i / 18i / 21i / 31i Series |
Condition | Brand New / Original |
Warranty | 12 Months |
Country of Origin | Japan |
The A03B-0815-C002 is commonly used in a wide range of CNC-controlled systems and automation environments, including:
CNC machining centers and milling machines
FANUC-controlled robotic cells
Automated production lines
Servo and spindle control systems
Manufacturing and assembly applications
This module enables stable signal exchange between the control unit and external actuators, ensuring smooth coordination of mechanical movements and system feedback.
Always power off the system before installation or replacement.
Check the module slot alignment before insertion to prevent connector damage.
Keep connectors clean and free from oil, dust, or oxidation.
Verify 24V DC input stability and grounding before use.
Schedule periodic system diagnostics using the FANUC CNC interface to monitor I/O health.
| Symptom | Possible Cause | Solution |
Output not functioning | Damaged external wiring or connector | Inspect connections and re-seat module |
I/O Link Error | Slot misalignment or grounding problem | Verify proper slot configuration |
Overcurrent Fault | Shorted output load | Check external load circuit |
Intermittent signal delay | Dust or oxidation on connector pins | Clean terminals and recheck |
It serves as the main communication bridge between the CNC controller and external components such as sensors, relays, and actuators, managing signal input and output operations precisely.
Testing can be done using the CNC diagnostic menu. Monitor real-time I/O signals, or use a test jig to verify voltage levels and continuity.
While both belong to the same series, the configuration and channel count differ. Always confirm part compatibility with your FANUC system specifications before substitution.
Common reasons include poor grounding, backplane connector issues, or incorrect module addressing. Regular system maintenance minimizes these occurrences.
At FANUCBUY, we provide 100% authentic and factory-tested FANUC modules sourced directly from Japan.
We guarantee:
Competitive prices and in-stock availability
12-month warranty on all products
Fast global shipping via DHL / FedEx
Professional FANUC technical support and installation guidance
Whether you need an I/O module, servo drive, or control board, FANUCBUY ensures reliable supply and expert assistance for all your CNC automation needs.
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