R120SFCPU-SET Programmable Logic Controller (PLC) - Mitsubishi Electric MELSEC iQ-R Series CPU Module

Mitsubishi R120SFCPU-SET

MELSEC iQ-R Safety CPU

Redundant System Safety Controller

R120SFCPU-SET

Mitsubishi R120SFCPU-SET is a MELSEC iQ-R Safety CPU designed for redundant system safety control, offering high-reliability safety functions in industrial automation applications requiring fail-safe operation and SIL3/PLe compliance.

Specification

SEODescription

The Mitsubishi R120SFCPU-SET, part of the MELSEC iQ-R Safety CPU series, is a high-reliability Redundant System Safety Controller designed for mission-critical industrial applications. This dual-CPU setup supports up to 30 direct safety I/O modules, with each CPU offering 1,024 safety input points and 1,024 safety output points. It features redundant Ethernet ports, USB, and Safety over EtherCAT interfaces for seamless communication. Operating within 24 VDC ±10% and a temperature range of 0–55°C, it excels in automotive, chemical, and heavy machinery sectors requiring SIL3/PLe safety compliance. Key advantages include fault-tolerant architecture, real-time diagnostics, and flexible expansion, though its complexity demands specialized programming expertise. Ideal for safety-critical processes, it ensures uninterrupted operation through synchronized redundancy while meeting global safety standards.

SEOSpecification

Parameter	Specification
Model Name	Mitsubishi R120SFCPU-SET
Controller Type	MELSEC iQ-R Safety CPU
System Architecture	Redundant System Safety Controller
Safety Standards	IEC 61508 SIL3, ISO 13849-1 PL e
Redundancy Method	Hot standby dual-CPU redundancy
Processing Speed	0.9 ns/instruction (base)
Program Memory	4 MB (Safety program area)
Safety I/O Capacity	Up to 256 safety I/O points
Communication Protocols	CC-Link IE Field Safety, Ethernet/IP Safety
Diagnostics Coverage	99%+ (hardware/software)
Operating Temperature	0°C to 55°C

SEOQandA

question:Do you provide technical selection services?
answer:Yes, we offer comprehensive technical selection support tailored to client needs.
question:Can shipments apply for low-value declaration?
answer:Yes, eligible shipments can apply for low-value declaration to reduce duties.
question:What payment terms do you accept?
answer:We accept T/T, L/C, and other flexible payment terms for global transactions.

SEOQandA_Product

question:How to resolve R120SFCPU-SET startup failure?
answer:Check power supply stability and configuration settings. Reset the CPU if necessary.
question:R120SFCPU-SET communication error with peripheral devices?
answer:Verify communication parameters (e.g., baud rate, protocol) and test network cables/connections.
question:R120SFCPU-SET firmware update failure?
answer:Re-download firmware file, ensure stable power, and retry with correct update procedure.
question:R120SFCPU-SET overheating during operation?
answer:Ensure proper ventilation, clean dust, and check for excessive load or ambient temperature.
question:R120SFCPU-SET I/O module not recognized?
answer:Confirm module compatibility, reseat connections, and verify configuration in the software.