What Is the Mitsubishi FX3G-60MR/ES?
When your production line demands a reliable, compact controller that can handle a mix of sensors and actuators without overcomplicating the design, what do you turn to? The Mitsubishi FX3G-60MR/ES delivers a balanced solution. This base unit from the MELSEC-F SERIES integrates 36 digital inputs (24 V DC) and 24 relay outputs, all powered by a universal AC 100-240 V supply. With 32K steps of program memory stored in EEPROM, it retains your logic without a battery backup. The FX3G-60MR/ES supports up to 128 local I/O points and 256 total I/O points when expanded, making it a flexible building block for evolving automation needs.
Technical Specifications Breakdown
The FX3G-60MR/ES offers a well-rounded set of specs that matter in real-world applications:
- Power Supply and Consumption: It operates on AC 100-240 V and consumes only 40 W, keeping energy costs low.
- Program Memory: 32K steps in EEPROM ensure fast, reliable storage without battery dependency.
- Cycle Times: The LD instruction executes in 210 ns, and the MOV instruction in 500 ns, providing responsive control for most discrete automation tasks.
- Environmental Range: Rated for ambient temperatures from 0 °C to 55 °C, with an IP10 protection class, suitable for clean indoor environments.
- Dimensions and Weight: Compact footprint of 175 mm (W) x 90 mm (H) x 86 mm (D) and a weight of 0.85 kg, simplifying panel mounting.
These parameters make the FX3G-60MR/ES a strong choice for applications requiring moderate I/O counts and relay switching capability.
Industry Applications
Packaging Machinery
In a packaging line, the FX3G-60MR/ES can manage conveyor belt sensors (36 inputs) and control pneumatic actuators or motors via its 24 relay outputs. The relay outputs handle inductive loads like solenoid valves directly, while the fast cycle times keep throughput high.
Material Handling Systems
For small sorting stations or lift systems, the 32K step memory allows complex sequences. The expandable architecture (up to 256 I/O points) means you can add remote I/O as the system grows, without replacing the main unit.
HVAC Control Panels
Building automation controllers benefit from the wide AC input range and low power consumption. The relay outputs switch fans, dampers, and pumps reliably, while the USB and RS-422 ports simplify programming and monitoring.
Installation & Setup Guidance
Mount the FX3G-60MR/ES on a DIN rail or directly onto a panel using the integrated slots. Ensure adequate ventilation around the unit to stay within the 0 °C to 55 °C ambient range. Connect the AC power supply (100-240 V) to the designated terminals, observing local electrical codes. Wire the 36 DC inputs (24 V DC) using shielded cable for noise immunity. The 24 relay outputs are form-A contacts rated for general-purpose loads; use external suppression diodes for inductive loads. The USB port provides convenient connection to GX Works2 or GX Developer software for programming and diagnostics. Always verify that the total I/O load does not exceed the 40 W power budget.
Maintenance & Reliability
The FX3G-60MR/ES uses EEPROM for program storage, eliminating the need for battery-backed memory. However, an optional buffer battery can be added for real-time clock retention. The IP10 protection class means the unit is not sealed against dust or moisture, so install it in a clean, dry cabinet. Periodically inspect the terminal connections for tightness and check for any signs of overheating. The relay outputs have a finite mechanical life; for high-cycle applications, consider derating or using external solid-state relays. Following these simple steps extends the controller's service life and reduces unplanned downtime.
Compatibility & Integration
The FX3G-60MR/ES integrates seamlessly within the MELSEC-F SERIES ecosystem. It includes one USB port and one RS-422 port for programming and communication with HMIs, drives, or other controllers. Expansion units (I/O, analog, or communication) can be added to increase functionality. The 32K step memory supports structured programming with function blocks and subroutines. For network connectivity, optional communication modules (not included) can be added via the expansion bus. Always verify compatibility with your existing Mitsubishi components before ordering.
Buying Guide & Purchasing Advice
Before purchasing the FX3G-60MR/ES, confirm your application's I/O count: 36 inputs and 24 relay outputs. If you need more, plan for expansion modules. Check that your power supply matches the AC 100-240 V input. The unit does not include a buffer battery; order one separately if you require real-time clock backup. At SpareTechPLC, we stock this model and can advise on compatible expansion units and accessories. Contact our team to verify current lifecycle status and availability before ordering.
Frequently Asked Questions
Can the FX3G-60MR/ES be expanded with analog modules?
Yes, the FX3G series supports expansion units, including analog I/O modules. The base unit can handle up to 128 local I/O points and 256 total I/O points with expansion.
What software is used to program the FX3G-60MR/ES?
Mitsubishi's GX Works2 or GX Developer software can be used. The USB port on the unit provides a direct programming connection.
Does the FX3G-60MR/ES require a battery for program retention?
No. The program memory is EEPROM, which retains data without battery power. An optional buffer battery is available for real-time clock backup.
What is the maximum ambient temperature for operation?
The FX3G-60MR/ES is rated for 0 °C to 55 °C ambient temperature. Ensure proper ventilation to stay within this range.
How many relay outputs does the FX3G-60MR/ES have?
It has 24 relay outputs, suitable for switching AC or DC loads up to the relay contact ratings. Refer to the manual for specific load limits.
