Product Introduction
When small-scale automation projects require a balance of performance and cost, the Mitsubishi FX3SA-30MT-CM Programmable Logic Controller delivers a reliable solution. This compact PLC from the FX3SA series is designed for applications needing analog I/O and communication functions like MODBUS and Ethernet. With 30 total I/O points (16 inputs and 14 outputs) and a transistor (source) output type, it provides precise control for machinery while keeping power consumption at just 21W. The FX3SA-30MT-CM operates on a universal AC100-240V supply, making it adaptable to various global installations. Its small footprint (100x90x75mm) and lightweight design (0.45kg) simplify panel mounting and reduce shipping costs, contributing to long-term savings.
Technical Specifications Breakdown
- Input/Output Configuration: The FX3SA-30MT-CM features 16 input points and 14 output points, with a maximum expandable I/O of 48 points. This scalability allows you to start with a basic setup and add modules as needs grow, avoiding upfront overinvestment.
- Output Type: Transistor (source) outputs offer fast switching and long service life compared to relays, reducing maintenance downtime and replacement costs in high-cycle applications.
- Power Supply and Consumption: Rated for AC100-240V, the unit consumes only 21W, minimizing energy bills over its operational life. The built-in power supply eliminates the need for an external converter, simplifying installation.
- Memory and Speed: With 32,000 steps of built-in program memory and fast instruction execution (basic: 0.21µs, application: 0.5µs), the controller handles complex logic without performance lag, boosting throughput.
- Physical Dimensions: At 100x90x75mm and 0.45kg, the compact form factor reduces enclosure size requirements, saving material costs.
Industry Applications
Packaging Machinery
In automated packaging lines, the FX3SA-30MT-CM controls conveyor belts, sensors, and actuators. Its transistor outputs enable high-speed cycling, while the analog input capability (via expansion modules) allows precise temperature or pressure monitoring. This reduces scrap rates and energy waste, directly improving ROI.
Material Handling Systems
For small sortation or transfer stations, the PLC manages up to 48 I/O points, coordinating multiple sensors and motor starters. The built-in MODBUS communication simplifies integration with HMIs or SCADA, lowering integration costs. The compact size fits tight control cabinets, reducing panel fabrication expenses.
HVAC Control
In building automation, the FX3SA-30MT-CM handles fan coil units, dampers, and temperature sensors. Its low power consumption (21W) contributes to green building certifications, while the real-time clock enables scheduling functions without extra hardware.
Installation & Setup Guidance
Mount the FX3SA-30MT-CM on a DIN rail or panel using the provided slots. Ensure adequate ventilation around the unit to maintain operating temperature. Connect the AC power supply (100-240V) to the designated terminals, observing local electrical codes. For input wiring, use shielded cables for analog signals to reduce noise. The RUN/STOP switch on the panel allows easy mode changes during commissioning. Use the online program editor to fine-tune logic without stopping production, minimizing downtime costs.
Maintenance & Reliability
Regular inspection of terminal connections and environmental conditions (dust, humidity) extends the PLC's life. The transistor outputs have no moving parts, reducing wear. The built-in clock and hour meter help schedule preventive maintenance, avoiding unexpected failures. By following a simple quarterly check of power supply voltage and I/O status, you can achieve over 100,000 hours of reliable operation, maximizing asset value.
Compatibility & Integration
The FX3SA-30MT-CM supports up to 8 special function modules, including analog I/O, high-speed counters, and temperature modules for J/K thermocouples or Pt sensors. It communicates via MODBUS and Ethernet (through expansion boards), enabling seamless connection to Mitsubishi and third-party devices. This flexibility allows you to expand functionality incrementally, aligning capital expenditure with project phases.
Selection Guide & Purchasing Advice
Before ordering, verify your I/O count and output type requirements. The FX3SA-30MT-CM is ideal for applications needing 16 inputs and 14 transistor outputs. If you need relay outputs or more I/O, consider other FX3SA variants. SpareTechPLC stocks this model and can advise on compatible expansion modules. Always confirm lifecycle status with our team to ensure long-term support.
Frequently Asked Questions
Q1: Can the FX3SA-30MT-CM handle analog inputs without an expansion module?
No, the base unit does not include analog inputs. You must add an analog I/O special function module (up to 8 modules per main unit) to process analog signals.
Q2: What is the maximum program memory size?
The built-in program memory is 32,000 steps, sufficient for most small to medium applications. An EEPROM memory cartridge is available for program transfer.
Q3: Does this PLC support MODBUS communication?
Yes, the FX3SA series supports MODBUS communication via expansion boards or special adaptors, enabling integration with various devices.
Q4: What is the weight and size of the FX3SA-30MT-CM?
It weighs 0.45kg and measures 100x90x75mm (WxHxD), making it compact for space-constrained panels.
Q5: Can I replace an older FX1S with this model?
Yes, the FX3SA is an enhanced replacement for FX1S, offering more memory, faster processing, and expanded communication options while maintaining a similar form factor.
