Product Overview
When a small automation system demands reliable logic control, the Mitsubishi FX1S-20MR-001 delivers. This compact PLC main unit from the FX1S series offers 20 I/O points—12 digital inputs and 8 relay outputs—powered by 24 V DC. With a small footprint and robust performance, it suits basic sequencing, OEM machinery, and standalone control tasks.
Key Features
- Total I/O: 20 points (12 inputs, 8 relay outputs)
- Output Type: Relay (2 A max per point)
- Power Supply: 24 V DC ±10%
- Program Memory: 2,000 steps
- Power Consumption: Approx. 10 W
- Mounting: DIN rail or panel
- Dimensions: 120 × 90 × 86 mm (W×H×D)
- Protection Class: IP10 (open type)
- Operating Temperature: 0 °C to +55 °C
- Certifications: CE, UL (E175732), cUL
Technical Specifications Breakdown
Inputs and Outputs
The FX1S-20MR-001 provides 12 sink/source digital inputs and 8 relay outputs. Each relay output handles up to 2 A, making it suitable for driving small motors, solenoids, and indicators. The 24 V DC input voltage with ±10% tolerance ensures stable operation in industrial environments.
Memory and Processing
With 2,000 steps of program memory, this controller handles moderate logic sequences. The compact design integrates CPU, power supply, and I/O in one unit, simplifying installation and reducing wiring.
Physical and Environmental
Measuring 120 × 90 × 86 mm and consuming only 10 W, the FX1S-20MR-001 fits tight enclosures. Its IP10 rating means it requires a clean, dry environment, but its 0 °C to +55 °C operating range covers most factory floor conditions.
Industry Applications
Packaging Machinery
In small packaging lines, the FX1S-20MR-001 controls conveyor sequencing, product counting, and actuator timing. The relay outputs directly drive pneumatic valves and small motors, while the compact size allows panel mounting in space-constrained areas.
Material Handling
For simple pick-and-place stations or conveyor diverters, this PLC manages sensor inputs and relay outputs reliably. The 24 V DC power requirement aligns with common industrial sensors, reducing the need for separate power supplies.
Installation & Setup Guidance
Mount the FX1S-20MR-001 on a DIN rail or panel using the integral clips. Connect 24 V DC power to the designated terminals, observing polarity. Wire digital inputs as sink or source per your sensor configuration. For relay outputs, ensure load current does not exceed 2 A per point. Use GX Developer software to program logic and download via the programming port.
Maintenance & Reliability
From a maintenance engineer's perspective, the FX1S-20MR-001 offers straightforward serviceability. Periodically inspect terminal connections for tightness and check for dust accumulation. The relay outputs have a finite mechanical life; plan for replacement after 100,000 operations under rated load. The unit's power consumption of 10 W minimizes heat buildup, contributing to long-term reliability.
Compatibility & Integration
This PLC works with GX Developer programming software and supports basic communication via optional expansion boards (e.g., RS232, RS485). It integrates with Mitsubishi HMI panels and can interface with other FX series units through simple I/O linking.
Selection Guide & Purchasing Advice
Before ordering, verify that the 20 I/O count meets your application needs. If you require more I/O or analog capabilities, consider the FX3G or FX3U series. SpareTechPLC stocks the FX1S-20MR-001 and can advise on availability and compatible accessories.
Frequently Asked Questions
Q: Can the FX1S-20MR-001 be expanded with additional I/O modules?
A: No, the FX1S series does not support expansion modules. However, you can add a small number of I/O points using optional BD boards.
Q: What is the maximum load per relay output?
A: Each relay output is rated for 2 A maximum at resistive load. Inductive loads may require derating or external snubbers.
Q: Does this PLC support high-speed counters?
A: Yes, the FX1S-20MR-001 includes built-in high-speed counters and timers, useful for pulse counting and simple motion control.
Q: What programming software is required?
A: Use GX Developer software (version 8 or later) to create and download ladder logic programs.
Q: Is the FX1S-20MR-001 still in production?
A: Please verify current lifecycle status and availability with SpareTechPLC before ordering.
