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- 產(chǎn)品名稱：Yokogawa Analog I/O Module NFAI841-S50
- 產(chǎn)品型號(hào)：NFAI841-S50
- 產(chǎn)品展商：Yokogawa
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簡(jiǎn)單介紹
Yokogawa Analog I/O Module NFAI841-S50, Yokogawa Analog I/O Module NFAI841-S50, 8-channel input, 8-channel output, non-isolated.
產(chǎn)品描述
Manufacturer: Yokogawa Electric Corporation
STARDOM
FCN, FCN-500, FCN-100, FCN-RTU, FCJ
Yokogawa Analog I/O Module NFAI841-S50
Standard Specifications
Current/Voltage I/O Modules (Non-Isolated) Yokogawa Analog I/O Module NFAI841-S50
These modules provide eight inputs and eight outputs to support up to eight loops.
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Items
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Specifications
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Model
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NFAI841(*5) (*7)
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NFAB841(*5)
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Number of I/O channels
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8-channel input/8-channel output,
non-isolated
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8-channel input/8-channel output,
non-isolated (differential input)
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I/O signal
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Input: 4 to 20 mA
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Output: 4 to 20 mA
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Input: 1 to 5 V (allowable common
mode voltage ± 1 V or less)
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Output: 4 to 20 mA
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Allowable input current/volt- age
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25 mA
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—
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±7.5 V
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—
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Overcurrent protection
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Provided
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—
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—
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—
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Input resistance
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Power ON
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250 Ω(*1)
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—
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1 MΩ or more
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—
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Power OFF
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500 kΩ or more
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—
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340 kΩ or more
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—
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Allowable load resistance
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—
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0 to 750 Ω(*3)
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—
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0 to 750 Ω
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Circuit-open detection
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—
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0.65 mA or less
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—
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0.65 mA or less
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Accuracy
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±0.1% of full scale
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±0.3% of full scale
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±0.1% of full scale
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±0.3% of full scale
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Data refresh cycle
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10 ms
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Input step response time
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100 ms
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Output step response time
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40 ms
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Output fallback (*4)
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—
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Set for each channel (*3)
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—
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Set for each channel (*3)
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Transmitter power supply
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22.8 to 26.4 V (output current limit: 27 mA)(*2)
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—
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Setting of 2-wire or 4-wire
transmitter
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For each channel by setting pin
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—
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Temperature drift
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Max. ±0.01 %/°C
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Maximum current consump- tion
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310 mA(5 V DC)
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310 mA(5 V DC)
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500 mA (24 V DC)
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250 mA (24 V DC)
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Weight
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0.3 kg
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External connection
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Pressure clamp terminal, MIL connector cable
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HART Communication(*6)
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Available
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—
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*1: A voltage drop by up to 3 V may occur due to the internal protection circuit. Yokogawa Analog I/O Module NFAI841-S50
*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-S50
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-S50
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Description
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Model
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NFAI841
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Analog I/O Module
(4 to 20mA input , 4 to 20mA output, 8-channel input/8-channel output, Non-Isolated)
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Suffix Codes
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-S
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Standard type
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-H
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With HART Communication
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5
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With no explosion protection
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E
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With explosion protection
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0
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Basic type
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1
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With ISA Standard G3 option
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OptionCodes
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/A4S00
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With Pressure Clamp Terminal Block for Analog [Model : NFTA4S-00]
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/A4S10
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With Pressure Clamp Terminal Block for Analog (surge absorber) [Model : NFTA4S-10]
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/CCC01
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With Connector Cover for MIL Cable [Model : NFCCC01]
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