Home / Mitsubishi Electric (Factory Automation) / Mitsubishi MELSEC iQ-F Series – Analog I/O Module / FX3U-4LC Mitsubishi MELSEC iQ-F Series Analog input/output module

Available on request

FX3U-4LC Mitsubishi MELSEC iQ-F Series Analog input/output module

MPN: FX3U-4LC · Brand: Mitsubishi Electric (Factory Automation)

Price on request

Request a Quote

12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

Ships via

Quick facts

Availability	Confirmed on request
Category	Mitsubishi MELSEC iQ-F Series – Analog I/O Module
Lifecycle	Active mature
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

When can FX3U-4LC be shipped?

FX3U-4LC is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up FX3U-4LC in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for FX3U-4LC and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for FX3U-4LC, subject to availability and destination.

The Mitsubishi Electric FX3U-4LC is a analog input/output module in the MELSEC iQ-F Series. Temperature sensor input (Temperature control): 4 ch. Mitsubishi Electric has announced its discontinuation (2028/03 To be end of order) — plan spares now; PartnerPLC also sources it on the surplus market after the end of order. Specifications and manuals below are Mitsubishi Electric's own data.

Specifications

Product

Series	MELSEC iQ-F Series
Category	Analog input/output module
Sales status	2028/03 To be end of order (Mitsubishi Electric)
Outline	Temperature sensor input (Temperature control): 4 ch

Specifications

Applicable PLC	FX5U, FX5UC, FX3U (V2.20 and later), FX3UC (V2.20 or later) [Connecting to the FX5U, FX5UC CPU module] FX5-CNV-BUS or FX5-CNV-BUSC is required to connect to the FX5U/FX5UC CPU module. Select one of the modules according to the system configuration. [Connecting to the connector-type PLC] The FX2NC-CNV-IF or FX3UC-1PS-5V is required to connect the FX3UC.
Number of occupied I/O points	8 points (Taken from either the input or output points of the PLC.)
Mass (weight)	Approx. 0.4 kg
Temperature sensor/Temperature control: No. of input points	4 points
Temperature sensor/Temperature control: Input type: Thermocouple	K, J, R, S, E, T, B, N (JIS C 1602-1995), PLII, W5Re/W26Re, U, L
Temperature sensor/Temperature control: Input type: Resistance temperature detector	3-wire Pt100 JIS C 1604-1997 3-wire JPt100 JIS C 1604-1981 2-wire or 3-wire Pt1000 JIS C 1604-1997
Temperature sensor/Temperature control: Input type: Micro voltage input	0 to 10 mV DC, 0 to 100 mV DC A different input can be selected for each channel.
Temperature sensor/Temperature control: Resolution	0.1°C (0.1°F), 1°C(1°F), 0.5 μV or 5.0 μV Varies depending on input range of used sensors.
Temperature sensor/Temperature control: Measurement precision	Ambient temperature: 25°C±5°C When K type thermocouple Input range 500℃ or more, ±(0.3% of input value)±1 digit Ambient temperature: 0 to 55°C When K type thermocouple input range 500°C or more, ±(0.7% of input value)±1 digit Measurement accuracy differs depending on the type of input, and the input range.
Temperature sensor/Temperature control: Cold contact temperature compensation error	Within ±1.0°C (When ambient temperature is 0 to 55°C) However, within ± 2.0°C while input value is -150 to -100°C / within ± 3.0°C while input value is -200 to -150°C
Temperature sensor/Temperature control: Sampling period	250 ms/4ch
Temperature sensor/Temperature control: Effect of external resistance	Approx. 0.125 V/Ω (When thermocouple is used)
Temperature sensor/Temperature control: Effect of input lead wire resistance: 3-wire type	Approx. 0.03%/Ω of full scale. 10 Ω or less per 1-wire (When resistance thermometer is used)
Temperature sensor/Temperature control: Effect of input lead wire resistance: 2-wire type	Approx. 0.04%/Ω of full scale. 7.5 Ω or less per 1-wire (When resistance thermometer is used)
Temperature sensor/Temperature control: Input impedance	1 MΩ or more
Temperature sensor/Temperature control: Sensor current	Approx. 0.25 mA (When resistance thermometer is used)
Temperature sensor/Temperature control: Operation when input is disconnected/Operation when input is short-circuited	Upscale/Downscale (When resistance thermometer is used)
Temperature sensor/Temperature control: Current detector (CT) input (Number of input points)	4 points
Temperature sensor/Temperature control: Current detector (CT) input (Measurement precision)	Larger one between ±5% of input value and ±2 A (Excluding precision of current detector)
Temperature sensor/Temperature control: Current detector (CT) input (Current detector)	CTL-12-S36-8, CTL-12-S56-10, CTL-6-P-H (manufactured by U.R.D. Co., Ltd.)
Temperature sensor/Temperature control: Current detector (CT) input (Heater current measured value)	When CTL-12-S36-8 is used: 0.0 to 100.0 A When CTL-12-S56-10 is used: 0.0 to 100.0 A When CTL-6-P-H is used: 0.0 to 30.0 A
Temperature sensor/Temperature control: Current detector (CT) input (Sampling period)	0.5 sec.
Temperature sensor/Temperature control: Control operation period	250 ms/4ch
Temperature sensor/Temperature control: Control system	Two-position control, PID control, Heating/cooling PID control, Cascade control
Temperature sensor/Temperature control: Temperature measuring range: K	-200 to 1300°C/-100 to 2400°F
Temperature sensor/Temperature control: Temperature measuring range: J	-200 to 1200°C/-100 to 2100°F
Temperature sensor/Temperature control: Temperature measuring range: T	-200 to 400°C/-300 to 700°F
Temperature sensor/Temperature control: Temperature measuring range: S	0 to 1700°C/0 to 3200°F
Temperature sensor/Temperature control: Temperature measuring range: R	0 to 1700°C/0 to 3200°F
Temperature sensor/Temperature control: Temperature measuring range: E	-200 to 1000°C/0 to 1800°F
Temperature sensor/Temperature control: Temperature measuring range: B	0 to 1800°C/0 to 3000°F
Temperature sensor/Temperature control: Temperature measuring range: N	0 to 1300°C/0 to 2300°F
Temperature sensor/Temperature control: Temperature measuring range: PLII	0 to 1200°C/0 to 2300°F
Temperature sensor/Temperature control: Temperature measuring range: U	-200 to 600°C/-300 to 700°F
Temperature sensor/Temperature control: Temperature measuring range: L	0 to 900°C/0 to 1600°F
Temperature sensor/Temperature control: Temperature measuring range: W5Re/W26Re	0 to 2300°C/0 to 3000°F
Temperature sensor/Temperature control: Temperature measuring range: Micro voltage input	0 to 10 mV DC, 0 to 100 mV DC
Temperature sensor/Temperature control: Temperature measuring range: Pt100 (3-wire)	-200 to 600°C/-300 to 1100°F
Temperature sensor/Temperature control: Temperature measuring range: JPt100 (3-wire)	-200 to 500°C/-300 to 900°F
Temperature sensor/Temperature control: Temperature measuring range: Pt1000 (2-wire/3-wire)	-200.0 to 650.0°C/-328 to 1184°F
Temperature sensor/Temperature control: Heater disconnection detection	Alarm is detected by buffer memory (Variable within range from 0.0 to 100.0 A.)
Temperature sensor/Temperature control: Operation mode	0: Not used 1: Monitor 2: Monitor + Alarm 3: Monitor + Alarm + Control (Selected by buffer memory)
Temperature sensor/Temperature control: Self-diagnostics function	Adjustment data check, input value check, watch dog timer check.
Temperature sensor/Temperature control: Memory	Built-in EEPROM (Number of times of overwrite: 100,000 times)
Temperature sensor/Temperature control: Isolation method	・The photocoupler is used to insulate the analog input area and transistor output area from the PLC. ・The DC/DC converter is used to insulate the power supply from the analog input area and transistor output area. ・Channels are insulated from each other.

Output specifications

No. of output points	4 points
Output method	NPN open collector transistor output
Rated load voltage	5 to 24 V DC
Maximum load voltage	30 V DC or less
Maximum load current	100 mA
Leak current in OFF status	0.1 mA or less
Max. voltage drop when ON	1.5 V (when energized with 100 mA)
Control output cycle	0.5 to 100.0 sec.

Power supply specifications

Power supply: Interface driving power	24 V DC +20% -15% 50 mA It is necessary to connect a 24 V DC power supply to the terminal block.
Power supply: CPU driving power	5 V DC 160 mA The power is internally supplied from the 5 V DC power supply unit of the main unit.

Specifications

Ambient temperature	0 to 55°C (32 to 131 °F) when operating and -25 to 75°C (-13 to 167 °F) when stored
Ambient humidity	5 to 95%RH (no condensation) when operating
Vibration resistance: Installed on DIN rail: Frequency: 10 to 57 Hz	Half amplitude: 0.035 mm Sweep Count for X, Y, Z: 10 times (80 min in each direction)
Vibration resistance: Installed on DIN rail: Frequency: 57 to 150 Hz	Acceleration: 4.9 m/s 2 Sweep Count for X, Y, Z: 10 times (80 min in each direction)
Vibration resistance: Direct installing: Frequency: 10 to 57 Hz	Half amplitude: 0.075 mm Sweep Count for X, Y, Z: 10 times (80 min in each direction)
Vibration resistance: Direct installing: Frequency: 57 to 150 Hz	Acceleration: 9.8 m/s 2 Sweep Count for X, Y, Z: 10 times (80 min in each direction)
Shock resistance	147 m/s 2 Acceleration, Action time: 11 ms, 3 times by half-sine pulse in each direction X, Y, and Z
Noise resistance	By noise simulator at noise voltage of 1,000 Vp-p, noise width of 1 μs, rise time of 1 ns and period of 30 to 100 Hz
Dielectric withstand voltage	Between batch of all terminals and ground terminal: 500 V AC for 1 min
Insulation resistance	Between batch of all terminals and ground terminal: 5 MΩ or higher by 500 V DC insulation resistance tester
Grounding	Class D grounding (grounding resistance: 100 Ω or less) (Common grounding with a heavy electrical system is not allowed) Ground the PLC independently or jointly.
Working atmosphere	Free from corrosive or flammable gas and excessive conductive dusts
Working altitude	2000 m or less Do not use the PLC under pressure higher than the atmospheric pressure. Doing so may damage the PLC.