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Mitsubishi Electric FX3S-20MT/ES — PLCs (Programmable Logic Controllers)

Mitsubishi FX3S-20MT/ES PLC, 12 inputs 8 outputs, transistor

MPNFX3S-20MT/ES

Mitsubishi FX3S series compact PLC, 12 inputs / 8 transistor sink outputs, 2-axis independent positioning, 100 kHz high-speed counters, AC 100-240 V power, 75 mm wide.

$346.00 – $417.73Ref. price · indicative, final on quote

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Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

FX3S-20MT/ES key specifications
Parameter	Value
Output type (format)	Transistor / sink output
Device timer (on-delay) 1 ms integration type	T128 to T131 4 points (0.001 to 32.767 seconds)
Device timer (on-delay) 100 ms integration type	T132 to T137 6 points (0.1 to 3,276.7 seconds)
ON voltage	1.5V or less
Voltage	AC 100 to 240 V
Withstand voltage	When performing the withstand voltage test, make the voltage between each terminal and the ground terminal of the basic unit with the following voltage. Between the power supply terminal (AC power supply) and the earth terminal: AC 1.5 kV 1 minute DC 24 V service power supply and between the input terminal (24 VDC) and the earth terminal: 500 VAC for 1 min Between the output terminal (transistor)
Input signal voltage	DC 24 V ± 10%
Voltage tolerance range	AC 85 - 264 V
Inrush current	Maximum 15 A 5 ms or less / AC 100 V, 28 A maximum 5 ms or less / AC 200 V
Open-circuit leakage current	0.1 mA or less / DC 30 V
Input OFF sensitivity current	1.5 mA or less
Input signal current x000 to x007	7 mA / 24 VDC

All specifications

FX3S-20MT/ES additional specifications
Parameter	Value
Input signal current x010 or later	5 mA / 24 VDC
Input ON sensitivity current x000 to x007	4.5 mA or more
Input ON sensitivity current x010 or later	3.5 mA or more
Power consumption	In the case of the maximum configuration that can be connected to the 20 W basic unit, it is the value when using 24 VDC service power. It also includes input current (7 mA or 5 mA per point).
Power supply fuse	250V 1A
External power supply	DC 5 to 30 V
24 VDC service power supply	400 mA
Allowable momentary power outage time	Operation continues with an instantaneous blackout of 10 ms or less.
Rated frequency	50/60 Hz
Maximum frequency	100 kHz
Anti-vibration direct installation frequency	57 to 150 Hz : Acceleration: 9.8 m / s 2 X, Y, Z 10 times in each direction (80 minutes in total) The criteria are based on IEC 61131-2
Anti-vibration when DIN rail is installed frequency	57 to 150 Hz : Acceleration: 4.9 m / s 2 Ten times in each of X, Y, Z directions (total of 80 minutes each) The criterion is based on IEC 61131-2
1 phase 1 count input	[C235, C236] 60 kHz [C237 to C240] 10 kHz [C241] 60 kHz [C242 to C245] 10 kHz When using multiple high-speed counters, make sure that the total of operating frequencies is less than the total frequency.
1 phase 2 count input	[C246] 60 kHz [C248 (OP)] 10 kHz [C247 to C250] 10 kHz When using multiple high-speed counters, make sure that the total of operating frequencies is less than total frequency.
2 phase 2 count input	[C251] 30 kHz [C253 (OP), C252 to C255] 5 kHz When using multiple high-speed counters, ensure that the total operating frequency is less than the total frequency.
Input connection shape	Fixed terminal block (M3 screw)
Output connection shape	Fixed terminal block (M3 screw)
Input response time	Approximately 10 ms X000 to X017 have a built-in digital filter and can be changed in 1 ms increments to 0 to 15 ms according to application instructions and D8020. However, when set to 0, it becomes the following. X000, X001: 10 .mu.s X002 to X007: 50 .mu.s X010 to X017: 200 .mu.s
Response time (OFF ? ON)	Y000, Y001: 5 µs or less / 10 mA or more (DC 5 to 24 V) Y002 to Y015: 0.2 ms or less / 200 mA or more (DC 24 V)
Response time (ON ? OFF)	Y000, Y001: 5 µs or less / 10 mA or more (DC 5 to 24 V) Y002 to Y015: 0.2 ms or less / 200 mA or more (DC 24 V)
Operating temperature	0 to 55 ° C. ··· Operating, -25 to 75 ° C. ····· Save
Use altitude	It can not be used under an environment pressurized to 2,000 m or less under atmospheric pressure. It may break down.
Relative humidity	5 to 95% RH (noncondensing) · · · · in operation
Shipping weight	1.3 Kg
Mass (weight)	0.30 (0.66)
W	mm (inches) : 75 (2.96”)
W1	mm (inches)Direct mounting hole pitches : 67 (2.64”)
Ground	Class D grounding (grounding resistance: 100 O or less) Grounding should be dedicated ground or common ground.
Input format	Sink / source
Device nesting	[For master control] N 0 to N 7 8 points (for MC command)
Noise immunity	Noise voltage with 1,000 Vp-p, noise width 1 µs, rising 1 ns, with noise si
Use atmosphere	There is no corrosive property, flammable gas, conductive dust (dust) is not serious
Impact resistance	147 m / s 2 , working time 11 ms, criterion for judgment three times in X, Y, Z directions by sine half-wave pulse is according to IEC 61131-2
Circuit insulation	Photocoupler insulation
Estimated lead time	Usually ships in 1 - 10 working days.
Input signal format	No-voltage contact input At sink input: NPN open collector transistor Source input: PNP open collector transistor
Positioning command	· ABS current reading ([D] ABS) · Origin with DOG search [DSZR] · Origin return [ZRN] (No DOG search function) Decelerates with near point DOG: ON and stops at near point DOG: OFF . (It differs from zero point return operation by counting the zero point signal) · Variable speed pulse output [PLSV] · Relative positioning [DRVI] · Absolute positioning [DRVA] Pulse output format: Pulse train + direction
Programming language	Sequence program
Insulation resistance	When conducting the insulation resistance test, perform the following voltage between each terminal and the ground terminal of the basic unit. Between the power supply terminal (AC power supply) and the earth terminal: 500 VDC DC insulation resistance meter 5 MO or more DC 24 V service power supply, between the input terminal (24 VDC) and the earth terminal: 500 V DC 500 MO or more with the insulation resistance meter Output terminal Between: 500 MV DC Insulation resistance meter 5 MO or more
Number of control axes	Independent 2 axes
Number of input points	12 points
Device for general use	S128 to S255 128 points
Input operation display	LED on the panel when driving the photo coupler
Number of output points	8 points
Corresponding basic unit	Transistor output type basic unit
Input circuit insulation	Photocoupler insulation
Pulse output instruction	· Pulse output (PLSY) · Pulse output with acceleration / deceleration (PLSR) Pulse output format: Pulse train (direction controlled by sequence)
Constant hexadecimal	16 bits: 0 to FFFF 32 bits: 0 to FFFFFFFF
Constant real number	32 bits: -1.0 × 2 128 to -1.0 × 2 - 126 , 0, 1.0 × 2 - 126 to 1.0 × 2 128 Decimal point representation and exponential representation are possible
Arithmetic control method	Stored program iterative calculation method with interrupt instruction
Device high speed counter	[32 bit high-speed up / down (EEPROM keep)] Up to 6 points can be used in C235 to C255 1 phase: 60 kHz, 10 kHz 2 phases: 30 kHz, 5 kHz There are restrictions on points and input frequencies that can be used depending on the conditions used. ? Note on Keep Area Keep area and non-keep area are fixed. (Parameter can not be changed.) In order to reliably keep to EEPROM, it is necessary for the sequencer to be energized for at least 5 consecutive minutes.
Maximum load inductive load	The total load per 12 W / DC 24 V common should be as follows. Output 1 point / common: 12 W or less / 24 VDC output 4 points / common: 19.2 W or less / 24 VDC
Maximum load resistive load	The total load current per 0.5 A / point common should be as follows. Output 1 point / common: 0.5 A or less Output 4 points / common: 0.8 A or less
Output operation indication	LED on the panel surface when photo coupler is driven
Constant decimal number	16 bits: -32,768 to + 32,767 32 bits: -2, 147, 483, 648 to +2, 147, 483, 647
Input impedance x000 to x007	3.3 kO
Device timer (on-delay) 1	T63 to T127 65 points (0.001 to 32.767 seconds)
Input (output control method)	Batch processing method (when END instruction is executed), I / O refresh command, with pulse catch function
Input impedance x010 or later	4.3 kO
Device timer (on-delay) other	Two internal analog volume can be used as analog timer VR 1: D 8030, VR 2: D 8031 ??2 points (0 to 255)
Real time clock clock function	Built-in 1980 to 2079 (with leap year correction) 2-digit / 4-digit year AD changeable, monthly difference ± 45 seconds (25 ° C) ? Note on clock function The current time of the built- It is backed up with. The large capacity condenser (built-in) is fully charged at the energization time of 30 minutes and holds the present value for 10 days.
Device i (O relay input relay)	X000 to X017 16 points (octal number) can not be added (FX 3 S - 20 M ? corresponds to the range from X 000 to X 013)
Device pointer input interrupt	I 0 ? ? - I 5 ? ? 6 points
Device pointer timer interrupt	I6 ?? - I 8 ? ? 3 points
Device timer (on-delay) 100	T 0 to T 31 63 points (0.1 to 3,276.7 seconds)
Device counter 32 bit up / down	C200 to C234 35 points (-2, 147, 483, 648 to +2, 147, 483, 647 counts)
Device i (O relay output relay)	Y000 to Y015 14 points (octal number) can not be expanded (FX 3 S - 20 M ? corresponds to the range from Y 000 to Y 007)
Device state keep (EEPROM keep)	S10 to S127 118 points ? Note on Keep Area Keep area and non-keep area are fixed. (Parameter can not be changed.) In order to reliably keep to EEPROM, it is necessary for the sequencer to be energized for at least 5 consecutive minutes.
Program memory protection function	Keyword protection function / With customer keyword function
Device pointer JUMP, for CALL branch	P0 to P255 256 points (for CJ instruction, CALL instruction, P63 for END jump)
Program memory maximum memory capacity	16000 steps Comment, 16000 steps including file register
Device auxiliary relay special purpose	M8000 to M8511 512 points
Device timer (on-delay) 100 ms 10	T32 to T62 31 points (0.1 to 3,276.7 seconds / 0.01 to 327.67 seconds) T32 to T62 (31 points) can be changed to 10 ms timer when M8028 is turned ON
Device counter 16 bit up (EEPROM keep)	C16 to C31 16 points (0 to 32,767 counts) * Note on keep area Keep area and non-keep area are fixed. (Parameter can not be changed.) In order to reliably keep to EEPROM, it is necessary for the sequencer to be energized for at least 5 consecutive minutes.
Program memory memory cassette (option)	FX3G-EEPROM-32L connectable (32000 step EEPROM) FX3S series can be used up to 16000 steps (program capacity is 4000 steps)
Types of instructions basic instruction	· Sequence instruction: 29 pieces · Step ladder instruction: 2 pieces
Program memory write function during RUN	Yes (program changeable during sequencer RUN)
Device auxiliary relay for general use 1	M 0 to M 383 384 points
Device auxiliary relay for general use 2	M512 to M1535 1024 points
Device auxiliary relay keep (EEPROM keep)	M384 to M511 128 points ? Note on keeping area Keep area and nonkeeping area are fixed. (Parameter can not be changed.) In order to reliably keep to EEPROM, it is necessary for the sequencer to be energized for at least 5 consecutive minutes.
Number of input (output points total score)	30 points or less (can not be added)
Device state for initial state (EEPROM keep)	S0 to S9 10 points ? Note on keeping area Keep area and nonkeeping area are fixed. (Parameter can not be changed.) In order to reliably keep to EEPROM, it is necessary for the sequencer to be energized for at least 5 consecutive minutes.
Arithmetic processing speed basic instruction	0.21 µs / instruction
Types of instructions application instruction	Application instruction: 116 kinds
Device counter 16 bit up (For general purpose)	C 0 to C 15 16 points (0 to 32,767 counts)
Program memory internal memory capacity (format)	16000 steps EEPROM (memory backup not required)
Arithmetic processing speed application instruction	0.5 µs to several 100 µs / instructions
Number of input (output points number of input points)	16 points or less (can not be added)
Number of input (output points number of output points)	14 points or less (can not be added)
Device data register (32 bits in pair use) for 16 bit index	V 0 to V 7, Z 0 to Z 7 16 points
Device data register (32 bits in pair use) 16 bit special use	D 8000 to D 8511 512 points
Device data register (32 bits in pair use) file register (EEPROM keep)	D1000 to D2999 2000 points (It can be set to the file register in units of 500 points)
Device data register (32 bits in pair use) for 16-bit keep (EEPROM keep)	D128 to D255 128 points ? Note on the keep area Keep area and non-keep area are fixed. (Parameter can not be changed.) In order to reliably keep to EEPROM, it is necessary for the sequencer to be energized for at least 5 consecutive minutes.

Product details

PLC overview and key specs

The Mitsubishi FX3S-20MT/ES is a compact PLC from the FX3S series, designed for small-machine control with 12 digital inputs and 8 transistor sink outputs. It operates on AC 100-240 V and fits into a 75 mm wide footprint (mounting hole pitch 67 mm). High-speed features include single-phase counters up to 60 kHz (C235, C236, C241) and two-phase counters up to 30 kHz (C251), plus independent 2-axis positioning with pulse train output. Inputs accept DC 24 V ±10% in sink or source format; input response is ~10 ms standard, but X000–X017 have a programmable digital filter down to 10 µs for fast signals.

Integration and mounting notes

Grounding must be Class D with resistance 100 Ω or less, dedicated or common ground per IEC 61131-2. Withstand voltage between AC power terminals and ground is 1.5 kV AC for 1 minute; between DC service power/inputs and ground is 500 V AC for 1 minute. Fixed terminal block with M3 screws; inrush current peaks at 28 A for 5 ms on 200 V AC supply. Include appropriate external fusing (recommended 250 V 1 A).