NX-AD NX-series Analog Input Unit/Specifications | OMRON Bangladesh by Kyoto Engineering & Automation

Item		Specification
Enclosure		Mounted in a panel
Grounding method		Ground to 100 Ω or less
Operating environment	Ambient operating temperature	0 to 55°C
	Ambient operating humidity	10% to 95% (with no condensation or icing)
	Atmosphere	Must be free from corrosive gases.
	Ambient storage temperature	-25 to 70°C (with no condensation or icing)
	Altitude	2,000 m max.
	Pollution degree	2 or less: Conforms to JIS B3502 and IEC 61131-2.
	Noise immunity	2 kV on power supply line (Conforms to IEC61000-4-4.)
	Overvoltage category	Category II: Conforms to JIS B3502 and IEC 61131-2.
	EMC immunity level	Zone B
	Vibration resistance	Conforms to IEC 60068-2-6. 5 to 8.4 Hz with 3.5-mm amplitude, 8.4 to 150 Hz, acceleration of 9.8 m/s², 100 min each in X, Y, and Z directions (10 sweeps of 10 min each = 100 min total)
	Shock resistance	Conforms to IEC 60068-2-27. 147 m/s², 3 times each in X, Y, and Z directions
Applicable standards *		cULus: Listed (UL508), ANSI/ISA 12.12.01, EU: EN 61131-2, C-Tick or RCM, KC Registration, NK, LR

* Ask your OMRON representative for the most recent applicable standards for each model.

Unit name	Analog Input Unit (voltage input type)	Model		NX-AD2603
Number of points	2 points	External connection terminals		Screwless clamping terminal block (8 terminals)
I/O refreshing method	Free-Run refreshing
Indicator	TS indicator	Input method		Single-ended input
		Input range		-10 to +10 V
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±15 V
		Input impedance		1 MΩ min.
		Resolution		1/8000 (full scale)
		Overall accuracy	25℃	±0.2% (full scale)
		Overall accuracy	0 to 55℃	±0.4% (full scale)
		Conversion time		250 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	Supply from the NX bus	Current capacity of I/O power supply terminal		IOV: 0.1 A/terminal max., IOG: 0.1 A/terminal max.
NX Unit power consumption	• Connected to a CPU Unit 1.35 W max. • Connected to a Communi- cations Coupler Unit 1.05 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Not supported.

Unit name	Analog Input Unit (voltage input type)	Model		NX-AD2604
Number of points	2 points	External connection terminals		Screwless clamping terminal block (8 terminals)
I/O refreshing method	Free-Run refreshing
Indicator	TS indicator	Input method		Differential Input
		Input range		-10 to +10 V
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±15 V
		Input impedance		1 MΩ min.
		Resolution		1/8000 (full scale)
		Overall accuracy	25℃	±0.2% (full scale)
		Overall accuracy	0 to 55℃	±0.4% (full scale)
		Conversion time		250 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	No supply	Current capacity of I/O power supply terminal		Without I/O power supply terminals
NX Unit power consumption	• Connected to a CPU Unit 1.35 W max. • Connected to a Communi- cations Coupler Unit 1.05 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Not supported.

Unit name	Analog Input Unit (voltage input type)	Model		NX-AD2608
Number of points	2 points	External connection terminals		Screwless clamping terminal block (8 terminals)
I/O refreshing method	Selectable Synchronous I/O refreshing or Free-Run refreshing
Indicator	TS indicator	Input method		Differential Input
		Input range		-10 to +10 V
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±15 V
		Input impedance		1 MΩ min.
		Resolution		1/30000 (full scale)
		Overall accuracy	25℃	±0.1% (full scale)
		Overall accuracy	0 to 55℃	±0.2% (full scale)
		Conversion time		10 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	No supply	Current capacity of I/O power supply terminal		Without I/O power supply terminals
NX Unit power consumption	• Connected to a CPU Unit 1.35 W max. • Connected to a Communi- cations Coupler Unit 1.05 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Not supported.

Unit name	Analog Input Unit (voltage input type)	Model		NX-AD3603
Number of points	4 points	External connection terminals		Screwless clamping terminal block (12 terminals)
I/O refreshing method	Free-Run refreshing
Indicator	TS indicator	Input method		Single-ended input
		Input range		-10 to +10 V
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±15 V
		Input impedance		1 MΩ min.
		Resolution		1/8000 (full scale)
		Overall accuracy	25℃	±0.2% (full scale)
		Overall accuracy	0 to 55℃	±0.4% (full scale)
		Conversion time		250 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	Supply from the NX bus	Current capacity of I/O power supply terminal		IOV: 0.1 A/terminal max., IOG: 0.1 A/terminal max.
NX Unit power consumption	• Connected to a CPU Unit 1.35 W max. • Connected to a Communi- cations Coupler Unit 1.10 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Not supported.

Unit name	Analog Input Unit (voltage input type)	Model		NX-AD3604
Number of points	4 points	External connection terminals		Screwless clamping terminal block (12 terminals)
I/O refreshing method	Free-Run refreshing
Indicator	TS indicator	Input method		Differential Input
		Input range		-10 to +10 V
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±15 V
		Input impedance		1 MΩ min.
		Resolution		1/8000 (full scale)
		Overall accuracy	25℃	±0.2% (full scale)
		Overall accuracy	0 to 55℃	±0.4% (full scale)
		Conversion time		250 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	No supply	Current capacity of I/O power supply terminal		Without I/O power supply terminals
NX Unit power consumption	• Connected to a CPU Unit 1.35 W max. • Connected to a Communi- cations Coupler Unit 1.10 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Not supported.

Unit name	Analog Input Unit (voltage input type)	Model		NX-AD3608
Number of points	4 points	External connection terminals		Screwless clamping terminal block (12 terminals)
I/O refreshing method	Selectable Synchronous I/O refreshing or Free-Run refreshing
Indicator	TS indicator	Input method		Differential Input
		Input range		-10 to +10 V
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±15 V
		Input impedance		1 MΩ min.
		Resolution		1/30000 (full scale)
		Overall accuracy	25℃	±0.1% (full scale)
		Overall accuracy	0 to 55℃	±0.2% (full scale)
		Conversion time		10 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	No supply	Current capacity of I/O power supply terminal		Without I/O power supply terminals
NX Unit power consumption	• Connected to a CPU Unit 1.45 W max. • Connected to a Communi- cations Coupler Unit 1.10 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Not supported.

Unit name	Analog Input Unit (voltage input type)	Model		NX-AD4603
Number of points	8 points	External connection terminals		Screwless clamping terminal block (16 terminals)
I/O refreshing method	Free-Run refreshing
Indicator	TS indicator	Input method		Single-ended input
		Input range		-10 to +10 V
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±15 V
		Input impedance		1 MΩ min.
		Resolution		1/8000 (full scale)
		Overall accuracy	25℃	±0.2% (full scale)
		Overall accuracy	0 to 55℃	±0.4% (full scale)
		Conversion time		250 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	Supply from the NX bus	Current capacity of I/O power supply terminal		IOG: 0.1 A/terminal max.
NX Unit power consumption	• Connected to a CPU Unit 1.45 W max. • Connected to a Communi- cations Coupler Unit 1.15 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Not supported.

Unit name	Analog Input Unit (voltage input type)	Model		NX-AD4604
Number of points	8 points	External connection terminals		Screwless clamping terminal block (16 terminals)
I/O refreshing method	Free-Run refreshing
Indicator	TS indicator	Input method		Differential Input
		Input range		-10 to +10 V
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±15 V
		Input impedance		1 MΩ min.
		Resolution		1/8000 (full scale)
		Overall accuracy	25℃	±0.2% (full scale)
		Overall accuracy	0 to 55℃	±0.4% (full scale)
		Conversion time		250 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	No supply	Current capacity of I/O power supply terminal		Without I/O power supply terminals
NX Unit power consumption	• Connected to a CPU Unit 1.45 W max. • Connected to a Communi- cations Coupler Unit 1.15 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Not supported.

Unit name	Analog Input Unit (voltage input type)	Model		NX-AD4608
Number of points	8 points	External connection terminals		Screwless clamping terminal block (16 terminals)
I/O refreshing method	Selectable Synchronous I/O refreshing or Free-Run refreshing
Indicator	TS indicator	Input method		Differential Input
		Input range		-10 to +10 V
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±15 V
		Input impedance		1 MΩ min.
		Resolution		1/30000 (full scale)
		Overall accuracy	25℃	±0.1% (full scale)
		Overall accuracy	0 to 55℃	±0.2% (full scale)
		Conversion time		10 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	No supply	Current capacity of I/O power supply terminal		Without I/O power supply terminals
NX Unit power consumption	• Connected to a CPU Unit 1.45 W max. • Connected to a Communi- cations Coupler Unit 1.15 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Not supported.

Unit name	Analog Input Unit (current input type)	Model		NX-AD2203
Number of points	2 points	External connection terminals		Screwless clamping terminal block (8 terminals)
I/O refreshing method	Free-Run refreshing
Indicator	TS indicator	Input method		Single-ended input
		Input range		4 to 20 mA
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±30 mA
		Input impedance		250 Ω min.
		Resolution		1/8000 (full scale)
		Overall accuracy	25℃	±0.2% (full scale)
		Overall accuracy	0 to 55℃	±0.4% (full scale)
		Conversion time		250 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	Supply from the NX bus	Current capacity of I/O power supply terminal		IOV: 0.1 A/terminal max., IOG: 0.1 A/terminal max.
NX Unit power consumption	• Connected to a CPU Unit 1.25 W max. • Connected to a Communi- cations Coupler Unit 0.90 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Supported.

Unit name	Analog Input Unit (current input type)	Model		NX-AD2204
Number of points	2 points	External connection terminals		Screwless clamping terminal block (8 terminals)
I/O refreshing method	Free-Run refreshing
Indicator	TS indicator	Input method		Differential Input
		Input range		4 to 20 mA
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±30 mA
		Input impedance		250 Ω min.
		Resolution		1/8000 (full scale)
		Overall accuracy	25℃	±0.2% (full scale)
		Overall accuracy	0 to 55℃	±0.4% (full scale)
		Conversion time		250 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	No supply	Current capacity of I/O power supply terminal		Without I/O power supply terminals
NX Unit power consumption	• Connected to a CPU Unit 1.25 W max. • Connected to a Communi- cations Coupler Unit 0.90 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Supported.

Unit name	Analog Input Unit (current input type)	Model		NX-AD2208
Number of points	2 points	External connection terminals		Screwless clamping terminal block (8 terminals)
I/O refreshing method	Selectable Synchronous I/O refreshing or Free-Run refreshing
Indicator	TS indicator	Input method		Differential Input
		Input range		4 to 20 mA
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±30 mA
		Input impedance		250 Ω
		Resolution		1/30000 (full scale)
		Overall accuracy	25℃	±0.1% (full scale)
		Overall accuracy	0 to 55℃	±0.2% (full scale)
		Conversion time		10 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	No supply	Current capacity of I/O power supply terminal		Without I/O power supply terminals
NX Unit power consumption	• Connected to a CPU Unit 1.25 W max. • Connected to a Communi- cations Coupler Unit 0.90 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Supported.

Unit name	Analog Input Unit (current input type)	Model		NX-AD3203
Number of points	4 points	External connection terminals		Screwless clamping terminal block (12 terminals)
I/O refreshing method	Free-Run refreshing
Indicator	TS indicator	Input method		Single-ended input
		Input range		4 to 20 mA
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±30 mA
		Input impedance		250 Ω min.
		Resolution		1/8000 (full scale)
		Overall accuracy	25℃	±0.2% (full scale)
		Overall accuracy	0 to 55℃	±0.4% (full scale)
		Conversion time		250 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	Supply from the NX bus	Current capacity of I/O power supply terminal		IOV: 0.1 A/terminal max., IOG: 0.1 A/terminal max.
NX Unit power consumption	• Connected to a CPU Unit 1.25 W max. • Connected to a Communi- cations Coupler Unit 0.90 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Supported.

Unit name	Analog Input Unit (current input type)	Model		NX-AD3204
Number of points	4 points	External connection terminals		Screwless clamping terminal block (12 terminals)
I/O refreshing method	Free-Run refreshing
Indicator	TS indicator	Input method		Differential Input
		Input range		4 to 20 mA
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±30 mA
		Input impedance		250 Ω min.
		Resolution		1/8000 (full scale)
		Overall accuracy	25℃	±0.2% (full scale)
		Overall accuracy	0 to 55℃	±0.4% (full scale)
		Conversion time		250 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	No supply	Current capacity of I/O power supply terminal		Without I/O power supply terminals
NX Unit power consumption	• Connected to a CPU Unit 1.25 W max. • Connected to a Communi- cations Coupler Unit 0.90 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Supported.

Unit name	Analog Input Unit (current input type)	Model		NX-AD3208
Number of points	4 points	External connection terminals		Screwless clamping terminal block (12 terminals)
I/O refreshing method	Selectable Synchronous I/O refreshing or Free-Run refreshing
Indicator	TS indicator	Input method		Differential Input
		Input range		4 to 20 mA
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±30 mA
		Input impedance		250 Ω min.
		Resolution		1/30000 (full scale)
		Overall accuracy	25℃	±0.1% (full scale)
		Overall accuracy	0 to 55℃	±0.2% (full scale)
		Conversion time		10 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	No supply	Current capacity of I/O power supply terminal		Without I/O power supply terminals
NX Unit power consumption	• Connected to a CPU Unit 1.30 W max. • Connected to a Communi- cations Coupler Unit 0.95 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Supported.

Unit name	Analog Input Unit (current input type)	Model		NX-AD4203
Number of points	8 points	External connection terminals		Screwless clamping terminal block (16 terminals)
I/O refreshing method	Free-Run refreshing
Indicator	TS indicator	Input method		Single-ended input
		Input range		4 to 20 mA
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±30 mA
		Input impedance		85 Ω
		Resolution		1/8000 (full scale)
		Overall accuracy	25℃	±0.2% (full scale)
		Overall accuracy	0 to 55℃	±0.4% (full scale)
		Conversion time		250 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	Supply from the NX bus	Current capacity of I/O power supply terminal		IOV: 0.1 A/terminal max.
NX Unit power consumption	• Connected to a CPU Unit 1.40 W max. • Connected to a Communi- cations Coupler Unit 1.05 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Supported.

Unit name	Analog Input Unit (current input type)	Model		NX-AD4204
Number of points	8 points	External connection terminals		Screwless clamping terminal block (16 terminals)
I/O refreshing method	Free-Run refreshing
Indicator	TS indicator	Input method		Differential Input
		Input range		4 to 20 mA
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±30 mA
		Input impedance		85 Ω
		Resolution		1/8000 (full scale)
		Overall accuracy	25℃	±0.2% (full scale)
		Overall accuracy	0 to 55℃	±0.4% (full scale)
		Conversion time		250 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	No supply	Current capacity of I/O power supply terminal		Without I/O power supply terminals
NX Unit power consumption	• Connected to a CPU Unit 1.40 W max. • Connected to a Communi- cations Coupler Unit 1.05 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Supported.

Unit name	Analog Input Unit (current input type)	Model		NX-AD4208
Number of points	8 points	External connection terminals		Screwless clamping terminal block (16 terminals)
I/O refreshing method	Selectable Synchronous I/O refreshing or Free-Run refreshing
Indicator	TS indicator	Input method		Differential Input
		Input range		4 to 20 mA
		Input conversion range		-5 to 105% (full scale)
		Absolute maximum rating		±30 mA
		Input impedance		85 Ω
		Resolution		1/30000 (full scale)
		Overall accuracy	25℃	±0.1% (full scale)
		Overall accuracy	0 to 55℃	±0.2% (full scale)
		Conversion time		10 μs/point
Dimensions	12 (W) x 100 (H) x 71 (D)	Isolation method		Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)	Dielectric strength		510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
I/O power supply method	No supply	Current capacity of I/O power supply terminal		Without I/O power supply terminals
NX Unit power consumption	• Connected to a CPU Unit 1.45 W max. • Connected to a Communi- cations Coupler Unit 1.10 W max.	I/O current consumption		No consumption
Weight	70 g max.
Circuit layout
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions
Terminal connection diagram
Input disconnection detection	Supported.

Refer to the user's manual for the CPU Unit for the CPU Unit to which NX Units can be connected.

NX Units		Corresponding versions *
Model	Unit version	CPU Unit	Sysmac Studio
NX-AD[][][][]	Ver.1.0	Ver.1.13 or later	Ver.1.17 or higher

* Some Units do not have all of the versions given in the above table. If a Unit does not have the specified version,
support is provided by the oldest available version after the specified version. Refer to the user’s manuals for the specific
Units for the relation between models and versions.

NX Units		Corresponding versions *
Model	Unit version	EtherCAT			EtherNet/IP
Model	Unit version	Communica- tions Coupler Unit	NJ/NX-series CPU Units or NY-series Industrial PCs	Sysmac Studio	Communica- tions Coupler Unit	Sysmac Studio
NX-AD[][][][]	Ver.1.0	Ver.1.0 or later	Ver.1.05 or later	Ver.1.06 or higher	Ver.1.0 or later	Ver.1.10 or higher

* Some Units do not have all of the versions given in the above table. If a Unit does not have the specified version,
support is provided by the oldest available version after the specified version. Refer to the user’s manuals for the specific
Units for the relation between models and versions.

NX-AD

Analog Inputs to meet all machine control needs; from generalpurpose inputs to high-speed synchronous, high-resolution units

General Specification

Analog Input Unit Specifications

Analog Input Unit (voltage input type) 2 points NX-AD2603

Analog Input Unit (voltage input type) 2 points NX-AD2604

Analog Input Unit (voltage input type) 2 points NX-AD2608

Analog Input Unit (voltage input type) 4 points NX-AD3603

Analog Input Unit (voltage input type) 4 points NX-AD3604

Analog Input Unit (voltage input type) 4 points NX-AD3608

Analog Input Unit (voltage input type) 8 points NX-AD4603

Analog Input Unit (voltage input type) 8 points NX-AD4604

Analog Input Unit (voltage input type) 8 points NX-AD4608

Analog Input Unit (current input type) 2 points NX-AD2203

Analog Input Unit (current input type) 2 points NX-AD2204

Analog Input Unit (current input type) 2 points NX-AD2208

Analog Input Unit (current input type) 4 points NX-AD3203

Analog Input Unit (current input type) 4 points NX-AD3204

Analog Input Unit (current input type) 4 points NX-AD3208

Analog Input Unit (current input type) 8 points NX-AD4203

Analog Input Unit (current input type) 8 points NX-AD4204

Analog Input Unit (current input type) 8 points NX-AD4208

Version Information

Connecting with CPU Units

Connecting with Coupler Units

Product Category