Manufacturer: Mitsubishi Electric
Product No.: FX3U-32MR/ES
Country of origin:United States
Product Type: PLC CPU Modules
Payment: T/T, Western Union
Weight: 2000g
Dimensions: 150 mm x 90 mm x 86 mm
Shipping port: Xiamen
Warranty: 12 months
Designed for high-speed industrial control architectures, the Mitsubishi Electric FX3U-32MR/ES acts as a high-performance main processing unit within the MELSEC FX3U micro PLC family. This unit combines a compact physical footprint with an exceptional execution speed of 0.065 microseconds per basic instruction. Equipped with 16 integrated digital inputs (sink/source selectable) and 16 relay outputs, it manages complex automation logic directly or scales up to 384 local and network I/O points via extension blocks and network modules.
The platform utilizes a large 64,000-step internal RAM memory, which is continuously backed up by a built-in lithium battery to protect program integrity. Industrial communication protocols, high-speed counting inputs up to 100 kHz, and expandable positioning features make this main processing unit an incredibly flexible core for modern machine control.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Number | FX3U-32MR/ES |
| Series | MELSEC FX3U |
| Rated Supply Voltage | 100 V AC to 240 V AC (85 V AC to 264 V AC allowable) |
| Rated Frequency | 50/60 Hz |
| Power Consumption | 35 W |
| Built-In Digital Inputs | 16 points (24 V DC, sink/source compatible) |
| Built-In Digital Outputs | 16 points (Relay type, mechanical contacts) |
| Service Power Supply | 24 V DC, 400 mA |
| Internal Power Capacity | 5 V DC, 500 mA (for expansion communication) |
| Execution Speed | 0.065 microseconds (Basic instruction) |
| Max. Expandable I/O | Up to 256 local digital points (384 points total including network remote I/O) |
| Maximum Load Rating | 2 A per output point (Resistive load), 80 VA (Inductive load) |
| Insulation Type | Photocoupler insulation (Inputs), Mechanical relay separation (Outputs) |
| Output Response Time | Approx. 10 ms (both OFF to ON and ON to OFF) |
| Country of Origin | Japan |
| Shipping Weight (Calculated) | 0.65 kg |
| Package Dimensions (Calculated) | 150 mm x 90 mm x 86 mm |
The controller uses physical removable M3 terminal blocks to guarantee secure connections in high-vibration applications. The following physical wiring map outlines standard system power and input/output routing:
| Terminal Reference | Assignment / Signal Mapping |
|---|---|
| L, N | 100 V AC to 240 V AC System Power Input |
| Protective Ground (FG) | Functional and protective system grounding (minimum Class D 100 Ohm or less resistance) |
| 24V, 0V (Service Output) | Auxiliary 24 V DC power output (400 mA maximum) for sensors |
| S/S Terminal | Sink / Source configuration selector for input group X000 to X017 |
| X000 to X017 | Digital Inputs (X000 to X007 support high-speed hardware counting functions) |
| COM1 to COM4 | Common terminals for corresponding relay outputs |
| Y000 to Y017 | Physical Relay Output contacts |
The FX3U-32MR/ES serves as a direct hardware upgrade path for the legacy FX2N-32MR-ES/UL units. Although mounting footprints are comparable, users must verify total physical depth clearance because the FX3U model incorporates additional side-bus expansion adapters. If you require transistor switching for high-speed pulse-train outputs (e.g., servo/stepper control), the FX3U-32MT/ES (transistor output version) should be selected instead of this relay model.
When switching inductive loads (such as solenoid valves, magnetic contactors, or motor starters) through the integrated relay outputs, voltage surges can severely degrade contact life. To prevent contact welding and electromagnetic interference (EMI), engineers should install an external surge absorber (for AC loads) or a freewheeling diode (for DC loads) across the load. Additionally, keep the total maximum current of the common terminals below the 8 A limit to avoid thermal breakdown of the internal PCB traces.
Ensure the built-in RUN/STOP slider switch is set to STOP during initial program downloads via the peripheral port. When utilizing high-speed inputs (X000 to X007) for encoder counting, ensure that twisted-pair shielded cabling is run separately from high-voltage motor conductors. The shielding must be grounded at a single, clean grounding terminal (FG) close to the PLC base unit to avoid creating ground loops that could cause erroneous counting pulses.
CRITICAL WARNING: Ensure all input power sources (system power and field contact power) are physically isolated and locked out before working on terminal wiring. Failure to de-energize equipment can cause severe electric shock or permanent equipment damage.
Global Express Shipping
Returns & Warranty
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|
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