Yokogawa Analog I/O Module NFAI841[Product print page]

Product Name: Yokogawa Analog I/O Module NFAI841

Product Type: NFAI841

Exhibitors: Yokogawa

Product Documentation: No Related Documents

Brief

Yokogawa Analog I/O Module NFAI841, Yokogawa Analog I/O Module NFAI841, 8-channel input, 8-channel output,non-isolated.

Detailed description

STARDOM

FCN, FCN-500, FCN-100, FCN-RTU, FCJ

Yokogawa Analog I/O Module NFAI841

Standard Specifications

Current/Voltage I/O Modules (Non-Isolated)

These modules provide eight inputs and eight outputs to support up to eight loops.

Yokogawa Analog I/O Module NFAI841

Items		Specifications
Model		NFAI841(5) (7)		NFAB841(*5)
Number of I/O channels		8-channel input/8-channel output, non-isolated		8-channel input/8-channel output, non-isolated (differential input)
I/O signal		Input: 4 to 20 mA	Output: 4 to 20 mA	Input: 1 to 5 V (allowable common mode voltage ± 1 V or less)	Output: 4 to 20 mA
Allowable input current/volt- age		25 mA	—	±7.5 V	—
Overcurrent protection		Provided	—	—	—
Input resistance	Power ON	250 Ω(*1)	—	1 MΩ or more	—
	Power OFF	500 kΩ or more	—	340 kΩ or more	—
Allowable load resistance		—	0 to 750 Ω(*3)	—	0 to 750 Ω
Circuit-open detection		—	0.65 mA or less	—	0.65 mA or less
Accuracy		±0.1% of full scale	±0.3% of full scale	±0.1% of full scale	±0.3% of full scale
Data refresh cycle		10 ms
Input step response time		100 ms
Output step response time		40 ms
Output fallback (*4)		—	Set for each channel (*3)	—	Set for each channel (*3)
Transmitter power supply		22.8 to 26.4 V (output current limit: 27 mA)(*2)		—
Setting of 2-wire or 4-wire transmitter		For each channel by setting pin		—
Temperature drift		Max. ±0.01 %/°C
Maximum current consump- tion		310 mA(5 V DC)		310 mA(5 V DC)
		500 mA (24 V DC)		250 mA (24 V DC)
Weight		0.3 kg
External connection		Pressure clamp terminal, MIL connector cable
HART Communication(*6)		Available		—

*1: A voltage drop by up to 3 V may occur due to the internal protection circuit. Yokogawa Analog I/O Module NFAI841
*2: Depends on the actual voltage applied by analog field power supply (24 V DC) via base module.
*3: HOLD: To hold output in which fallback is detected.
SETV: To output a specified value when fallback is detected.
*4: Select fallback [Yes/No] for each module. Yokogawa Analog I/O Module NFAI841
If [Yes] is selected for fallback, set [HOLD/SETV] for each channel.
Fallback detection time: 4 seconds
*5: When this I/O module is used, 24 V DC needs to be supplied to an analog field power supply terminal of the power supply module.
*6: For HART function specifications, refer to “HART Communication Functions” (GS 34P02Q53-01E).
*7: A Zener barrier is not allowed to be connected with this module. Use an isolation barrier when the module is used in intrinsically safe application.

Models and Suffix Codes

Yokogawa Analog I/O Module NFAI841

		Description
Model	NFAI841	Analog I/O Module (4 to 20mA input , 4 to 20mA output, 8-channel input/8-channel output, Non-Isolated)
Suffix Codes	-S	Standard type
	-H	With HART Communication
	5	With no explosion protection
	E	With explosion protection
	0	Basic type
	1	With ISA Standard G3 option
OptionCodes	/A4S00	With Pressure Clamp Terminal Block for Analog [Model : NFTA4S-00]
	/A4S10	With Pressure Clamp Terminal Block for Analog (surge absorber) [Model : NFTA4S-10]
	/CCC01	With Connector Cover for MIL Cable [Model : NFCCC01]