The FX3G-60MT/ESS is Mitsubishi Electric’s 60-point transistor sink output base unit for the MELSEC FX3G compact PLC series, providing 36 digital inputs and 24 NPN open-collector transistor outputs in a self-contained AC-powered controller — the largest and highest-density base unit in the entire FX3G range, combining the FX3G’s entry-level cost and simplicity with transistor output durability and built-in pulse output capability across 60 I/O points. As the top-of-range FX3G base unit, the FX3G-60MT/ESS delivers the maximum standalone I/O count available in the FX3G family for applications where the FX3G platform’s capabilities are sufficient and 60-point I/O coverage from a single compact controller eliminates the need for expansion modules. Atlantech Drives holds stock of the FX3G-60MT/ESS. Contact us for fast worldwide delivery and competitive pricing.
What Is the FX3G-60MT/ESS?
The FX3G-60MT/ESS is a MELSEC FX3G series compact PLC base unit with transistor sink (NPN open-collector) outputs, providing 36 input points (X0–X43, octal numbering) and 24 transistor output points (Y0–Y27, octal). The «ESS» suffix designates sink (NPN) transistor outputs with AC power supply — the output common terminal connects to the external +24 VDC positive, and the NPN transistors pull output terminals to 0 VDC when activated, compatible with PNP-input field devices. The FX3G-60MT/ESS provides the same FX3G CPU core (0.21 µs per basic instruction, 32,000-step program memory, real-time clock) as all FX3G base units, with 6 built-in high-speed counter inputs at up to 10 kHz and pulse output on Y0 (100 kHz) and Y1 (10 kHz) for stepper and servo positioning. The 24 transistor outputs provide unlimited electrical switching life compared to the relay contact output of the FX3G-40MR/ES-A, making the FX3G-60MT/ESS the correct choice for high-cycle 24 VDC applications where contact wear would necessitate frequent base unit replacement. With 60 total I/O points from a single base unit, the FX3G-60MT/ESS covers most standalone machine applications without the cost and complexity of extension modules.
Key Technical Specifications
- Model: FX3G-60MT/ESS
- Total I/O Points: 60 (36 inputs + 24 outputs)
- Input Type: 24 VDC sink (X0–X43)
- Output Type: Transistor sink/NPN open-collector (Y0–Y27), 0.5 A per point, 5–30 VDC
- Output Polarity: Sink (NPN) — common terminal to +24 VDC positive
- High-Speed Pulse Output: Y0 (100 kHz), Y1 (10 kHz)
- Power Supply: 100–240 VAC, 50/60 Hz
- Program Memory: 32,000 steps
- Execution Speed: 0.21 µs per LD instruction
- Built-in High-Speed Counters: 6 inputs (10 kHz maximum)
- Communication: RS-422 (built-in)
- Real-Time Clock: Built-in
- Battery Backup: Yes
- Expansion: Up to 128 total I/O (base + extension modules)
- Operating Temperature: 0°C to 55°C
- Dimensions (W × H × D): 175 mm × 90 mm × 75 mm
- Weight: Approx. 0.95 kg
Replacement & Upgrade Notes
The FX3G-60MT/ESS is the recommended upgrade path from the FX2N-64MT-ESS/UL (64-point transistor sink model from the previous FX2N generation) in retrofit projects where the I/O count is within the FX3G’s 60-point base unit capacity and the FX2N’s performance limitations have become a constraint. The FX3G provides improved instruction execution for applied instructions and a larger built-in high-speed counter channel count (6 versus 3 for the FX2N-64MT). FX2N programs transfer to the FX3G-60MT/ESS with GX Works2 compatibility checking — most standard ladder instructions are compatible, with differences primarily in some special function and motion instructions. For customers currently operating FX2N-64MT-ESS systems who require more than 60 I/O points or more than 32,000 program steps, migrating to the FX3U-64MT/ESS or FX3U-80MT/ESS provides a larger FX3-generation platform with the full FX3U feature set. For new designs requiring more than 60 I/O points with transistor output within the FX3G platform, two options exist: add FX3G transistor output extension modules to expand to the 128-point maximum, or migrate to the FX3U platform for the larger native base unit I/O count (FX3U-80MT/ESS: 40 inputs, 40 transistor outputs, 80 total). The FX3G-60MT/ESS’s 60-point I/O count from a single base unit — without extension modules — is a specific advantage for machine builders preferring a single-unit controller over a base unit plus extension combination for mechanical simplicity and reduced wiring.
Frequently Asked Questions
Q: Can the FX3G-60MT/ESS be expanded beyond 60 I/O points with extension modules?
A: Yes. The FX3G-60MT/ESS supports FX3G extension I/O modules connected to the right side of the base unit, expanding total I/O to a maximum of 128 points (60 base + up to 68 extension points). However, with 60 points already on the base unit, most applications that specify the FX3G-60MT/ESS specifically because the base unit I/O meets their requirements will not require extension modules. For applications requiring more than 128 total I/O points, the FX3U or FX5U platform (which supports up to 256 I/O with extension modules) is the appropriate specification.
Q: Does the FX3G-60MT/ESS support the same communication option boards as the FX3U?
A: The FX3G-60MT/ESS supports FX3G-series option boards installed on the base unit’s option board slot — including FX3G-232-BD (RS-232C), FX3G-485-BD (RS-485), and FX3G-422-BD (additional RS-422). The FX3U-series option boards (FX3U-232-BD, FX3U-485-BD) are physically and electrically different from FX3G option boards and are not interchangeable. Verify the «FX3G» prefix on any option board ordered for the FX3G-60MT/ESS to ensure compatibility.
Q: Is the FX3G-60MT/ESS suitable for use with Mitsubishi GOT2000 HMI panels?
A: Yes. The FX3G-60MT/ESS communicates directly with GOT2000 HMI panels (GS2107, GS2110, GT2104, GT2107, GT2310 series and others) using Mitsubishi’s standard FX communication protocol via the built-in RS-422 port and a GT-FX cable. The GOT2000 provides full read/write access to all FX3G device data — X inputs, Y outputs, M relays, T timers, C counters, D data registers, and R file registers — for HMI screen display and operator data entry.
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