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Mitsubishi FX1S-14MR-001 Programmable Logic Controller PLC (8 DI / 6 Relay DO)

Mitsubishi Electric MELSEC-F FX1S series micro PLC, 14 I/O points (8 inputs / 6 relay outputs), 100–240V AC supply, built-in 2000-step EEPROM program memory (no battery required), for sequential logic and timing/counting control of small machinery.
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Product Details

1. Product Overview

The FX1S-14MR-001 is a micro programmable logic controller (PLC) from Mitsubishi Electric's MELSEC-F series, integrating power supply, CPU, 8 digital inputs and 6 relay outputs into a single compact housing. At only 60 mm wide, it supports DIN-rail or screw mounting and is an ideal control core for space- and cost-sensitive small equipment.

The unit features a built-in 2000-step EEPROM program memory (no battery backup, programs retained on power-off), an on-board real-time clock and hour meter, and a built-in 24V DC / 400mA sensor supply for directly powering proximity switches, photoelectric sensors and other field devices. The relay output version switches ≤240V AC / ≤30V DC loads at 2A per point, suitable for solenoid valves, contactor coils, indicator lights and more.

2. Specifications

表格

Item Specification
Brand Mitsubishi Electric 三菱电机
Series MELSEC-F FX1S (micro PLC)
Model FX1S-14MR-001
Total I/O 14 points (8 in / 6 out)
Digital inputs 8 points (X0–X7), 24V DC ±10%, 7mA/point, sink input
Digital outputs 6 relay outputs (Y0–Y5), 2A/point, 8A/COMMON
Output switching voltage ≤240V AC, ≤30V DC (resistive load)
Power supply 100–240V AC +10%/−15%, 50/60 Hz
Power interruption ride-through <10 ms continues operation
Program memory Built-in EEPROM 2000 steps (no battery; EEPROM life approx. 10,000 writes)
Programming language Ladder logic
Basic instruction speed Approx. 0.55–0.7 μs/step
Auxiliary relays (M) 384 points general (incl. latched)
Timers (T) 199 × 100 ms + 46 × 10 ms
Counters (C) 16 general (C0–C15) + 16 latched (C16–C31), range 1–32,767
Data registers (D) 128 general (D0–D127) + 128 latched (D128–D255), 16-bit
On-board sensor supply 24V DC, 400mA
Clock / hour meter Built-in RTC and run-hour meter
Expansion Expansion boards (4EX-BD, 2AD-BD, 1DA-BD, 2EYT-BD) and communication boards (232-BD, 485-BD)
Operating temperature 0–55 °C
Storage temperature −20–70 °C
Humidity 35–85% RH (non-condensing)
Mounting DIN rail or direct screw mounting
Dimensions (W×H×D) Approx. 60 × 90 × 75 mm
Weight Approx. 0.3 kg
Version note "-001" = Japanese domestic spec (fixed sink input)

Per Mitsubishi FX1S hardware manual JY992D83901. The FX1S series is an earlier-generation model; new designs are recommended to use its successor FX3S-14MR/ES. Relay outputs have no internal short-circuit protection; for DC inductive loads, fit a free-wheeling diode across the load.

5. Model Information

  • Model (ordering number): FX1S-14MR-001
  • Product description: Mitsubishi Electric MELSEC-F FX1S micro PLC, 14 I/O (8 in / 6 relay out), 100–240V AC supply, Japanese domestic spec.
  • Official catalog description: FX1S is the fit-and-forget PLC solution for space and cost conscious applications requiring up to 30 I/O.
  • Material number note: FX1S-14MR-001 is the official Mitsubishi Electric ordering model (Japanese domestic spec). The equivalent international CE/UL-certified version is FX1S-14MR-ES/UL. The "-001" suffix denotes Japanese domestic production with fixed sink input. If you have questions about the successor FX3S-14MR/ES compatibility or program migration, please contact us by email.
  • Series features:
    • Compact integrated design, only 60 mm wide, DIN-rail mountable
    • Built-in EEPROM program memory, no battery, program retained on power-off
    • On-board 24V DC / 400mA sensor supply simplifies field wiring
    • Relay outputs switch both AC and DC loads, 2A per point
    • Built-in real-time clock and hour meter
    • Expansion boards add analog I/O, special I/O and RS-232/RS-485 communication
    • Fast instruction processing (approx. 0.55 μs basic instruction) for most sequential control tasks
  • Related models in series: FX1S-10MR (6 in / 4 out), FX1S-20MR (12 in / 8 out), FX1S-30MR (16 in / 14 out); transistor-output versions carry the MT suffix
  • Matching products: Programming cable (SC-09 / USB-SC09), expansion boards (FX1N-4EX-BD, FX1N-2AD-BD, FX1N-1DA-BD, FX1N-232-BD, FX1N-485-BD), text display (FX-10DM), GOT HMI
  • Official documents: Mitsubishi Electric FX1S Hardware Manual JY992D83901; FX1S replacement guide FAM-A-0042-A (FX1S → FX3S)

6. Why Choose Us

  1. Exact model match: We verify supply against your full model FX1S-14MR-001, distinguishing the 001 (Japanese spec) from ES/UL (international spec) to avoid wrong shipment.
  2. Authorized channel supply: Mitsubishi Electric PLC supplied through regular channels, with product documentation available on request.
  3. Selection support: We help confirm I/O count, output type (relay/transistor), power supply and matching with field sensors and actuators; we can advise on upgrading to FX3S.
  4. Delivery & after-sales: Quotation, lead-time confirmation and order follow-up provided; for any parameter questions or alternative options, please contact us by email.

7. FAQ

Q1: How many I/O points does the FX1S-14MR-001 have?

A: 14 points total: 8 digital inputs (X0–X7, 24V DC) and 6 relay outputs (Y0–Y5).

Q2: Can the relay outputs directly drive contactors and solenoid valves?

A: Yes. Relay outputs switch ≤240V AC / ≤30V DC at 2A per point and 8A per common. For AC contactors or DC solenoids, fit an RC snubber or free-wheeling diode across the inductive load to extend contact life.

Q3: Does this PLC need a backup battery?

A: No. The FX1S stores the user program in built-in EEPROM; there is no battery, and the program is retained on power-off. The EEPROM is rated for approx. 10,000 writes, which is not affected by normal program downloads.

Q4: What is the difference between the -001 suffix and the ES/UL version?

A: FX1S-14MR-001 is the Japanese domestic model with fixed sink input; FX1S-14MR-ES/UL is the international CE/UL-certified version with switchable sink/source input. The hardware functions are identical; the differences are certifications and input wiring configuration.

Q5: Is this PLC still in production? Is there a successor?

A: The FX1S series is an earlier-generation Mitsubishi micro PLC. Mitsubishi's official replacement guide recommends FX3S-14MR/ES (same I/O count, 100–240V AC, relay output, 16K-step program memory) for new designs. Migration requires program porting and wiring review; please email us for a migration plan.

Q6: How do I add analog I/O or communication?

A: The FX1S accepts face-plug expansion boards (no shell removal needed): 2AD-BD (2-channel analog input), 1DA-BD (1-channel analog output), 4EX-BD (4-point digital input), or 232-BD / 485-BD communication boards. If more I/O or analog channels are required, consider the FX3S series with expansion blocks.

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