Product Introduction
When space constraints and tight budgets challenge your automation project, the Mitsubishi FX3G-14MT/ES-A delivers a proven solution. This compact PLC base unit from the MELSEC-F SERIES integrates 8 digital inputs (DC 24V) and 6 transistor outputs (sink type) in a single, rugged package. With AC 100-240 V power supply, it fits directly into global control panels without extra converters. The FX3G-14MT/ES-A handles up to 128 local I/O points, expandable to 256 with remote I/O, making it suitable for both standalone machines and distributed systems.
Technical Specifications Breakdown
The FX3G-14MT/ES-A offers a balanced set of performance metrics for real-world control tasks. Its program memory of 32K steps, stored in EEPROM, ensures reliable retention of your logic without battery backup. Cycle times are fast: 210 ns for a basic LD instruction and 500 ns for a MOV instruction, enabling responsive control loops. Power consumption is 31 W, and the unit operates in ambient temperatures from 0 °C to 55 °C, with an IP10 protection class suitable for clean indoor environments. The built-in USB and RS-422 ports simplify programming and connectivity to HMIs or other controllers.
Industry Applications
A common pain point in packaging lines is the need for precise, high-speed output switching. The FX3G-14MT/ES-A's 6 transistor sink outputs provide fast, solid-state switching ideal for controlling solenoids, indicators, or small motors. In material handling systems, the 8 DC 24V inputs reliably sense limit switches and proximity sensors. The expandability to 256 I/O points allows the same controller to grow with your production line, reducing redesign costs.
Installation & Setup Guidance
Mount the FX3G-14MT/ES-A on a DIN rail or directly to a panel using its 90 mm width and 90 mm height footprint. Connect AC power (100-240 V) to the designated terminals, ensuring proper grounding per local codes. Wire DC 24V sensors to the input terminals and transistor loads to the output terminals, respecting sink logic polarity. Use the USB port for initial programming with Mitsubishi GX Works2 software. For larger systems, add expansion modules via the built-in extension bus.
Maintenance & Reliability
To maximize uptime, inspect the FX3G-14MT/ES-A periodically for dust accumulation on the ventilation slots, especially in environments near the 55 °C maximum temperature. The EEPROM memory requires no battery backup, eliminating a common failure point. Verify that the ambient temperature stays within 0 °C to 55 °C to prevent overheating. Since the unit has no moving parts, the primary wear items are external wiring and connectors—check these annually for tightness and corrosion.
Compatibility & Integration
The FX3G-14MT/ES-A integrates seamlessly with Mitsubishi MELSEC-F SERIES expansion modules, allowing you to add analog I/O, temperature control, or additional digital points. The RS-422 port supports connection to Mitsubishi HMI panels or SCADA systems via a simple converter. The USB port provides direct programming access without special interface cards. For remote I/O expansion, the unit supports up to 256 total I/O points, making it compatible with distributed control architectures.
Selection Guide & Purchasing Advice
Before ordering the FX3G-14MT/ES-A, verify that your application requires 8 DC 24V inputs and 6 transistor sink outputs. If you need relay outputs or more inputs, consider alternative models in the FX3G series. The unit ships without a buffer battery—order one separately if you need real-time clock backup. SpareTechPLC stocks this model and can confirm current lifecycle status and availability. Contact our team for volume pricing or expedited shipping options.
Frequently Asked Questions
What is the program memory size of the FX3G-14MT/ES-A?
The FX3G-14MT/ES-A has 32K steps of program memory stored in EEPROM, which retains data without a battery.
Can I expand the I/O points beyond the built-in 8 inputs and 6 outputs?
Yes, the FX3G-14MT/ES-A is expandable. It supports up to 128 local I/O points and up to 256 total I/O points with remote expansion modules.
What type of outputs does the FX3G-14MT/ES-A have?
The unit has 6 transistor outputs configured as sink type, suitable for switching DC loads such as solenoids and indicator lights.
What is the power supply requirement for this PLC?
The FX3G-14MT/ES-A operates on AC 100-240 V power supply, making it compatible with standard industrial mains voltages worldwide.
Does the FX3G-14MT/ES-A include a USB port for programming?
Yes, it includes one USB port for direct connection to a PC for programming and monitoring using GX Works2 software.
