Mitsubishi FX3SA-20MR-CM PLC: Compact Transistor Output Controller

Product Overview

This programmable logic controller (PLC) from the FX3SA series offers a balanced mix of inputs and outputs in a compact footprint. It handles basic control tasks efficiently, making it a practical choice for machinery and process applications.

Technical Specifications Breakdown

The FX3SA-20MR-CM provides 20 input and output points total, with 12 input points and 8 output points. The output form is relay output, suitable for switching moderate loads. Power supply is AC100-240V, accommodating standard industrial mains. Power consumption is rated at 20W, and the unit weighs 0.4 kg. Outline dimensions are 75x90x75mm, fitting easily into control panels. These specifications ensure straightforward integration into existing systems.

Industry Applications

Its relay outputs can directly drive contactors, solenoid valves, and indicator lamps. The compact size allows installation in tight spaces, while the AC power supply simplifies wiring. For example, in a labeling machine, the 12 inputs can handle sensors and pushbuttons, while the 8 relay outputs control actuators and alarms.

Installation & Setup Guidance

Mount the FX3SA-20MR-CM on a DIN rail or directly on a panel using the provided slots. Ensure adequate ventilation around the unit. Connect the AC power supply (100-240V) to the designated terminals. Wire input devices (sensors, switches) to the input terminals, observing polarity if required. Connect output loads to the relay output terminals, respecting contact ratings. Use appropriate wire sizes and fusing per local codes. After wiring, verify all connections before powering up.

Maintenance & Reliability

Periodically inspect the PLC for dust accumulation and ensure ventilation openings remain clear. Check terminal connections for tightness. The relay outputs have a finite mechanical life; plan for eventual replacement based on switching frequency. The unit operates reliably in typical industrial environments. Regular visual checks and functional testing help maintain uptime.

Compatibility & Integration

The FX3SA-20MR-CM integrates with Mitsubishi programming software (GX Works2 or earlier) for ladder logic development. It supports basic communication via built-in ports (if available on this model). For expanded I/O, compatible extension modules can be added. The PLC can also interface with HMIs and other devices using standard protocols. Verify specific communication capabilities in the product manual.

Selection Guide & Purchasing Advice

Before ordering, confirm that the FX3SA-20MR-CM meets your I/O count and output type requirements. Ensure your power supply matches the AC100-240V input. Check physical dimensions for panel fit. AutoDCSTech stocks this model and can advise on availability and lead times. Contact our team for assistance with your application.