NFAI841-S00 S2 YOKOGAWA Analog I/O Module

NFAI841-S00 S2 YOKOGAWA HART Analog I/O Module DCS

NFAI841-S00 S2 YOKOGAWA HART Analog I/O Module DCS

Availability: 10 left in stock

YOKOGAWA NFAI841-S00 S2 Analog I/O Module The YOKOGAWA NFAI841-S00 S2, also cataloged as the NFAI841 Analog I/O Module, operates as...

SKU: NFAI841-S00 S2

Manufacturer: Yokogawa
Product No.: NFAI841-S00 S2
Product Type: Analog I/O Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 200g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

YOKOGAWA NFAI841-S00 S2 Analog I/O Module

The YOKOGAWA NFAI841-S00 S2, also cataloged as the NFAI841 Analog I/O Module, operates as a dedicated hardware component for process monitoring and control signal processing within CENTUM VP and STARDOM DCS platforms. The unit processes dual-function analog operations directly at the module backplane, converting physical process variables into digitized internal system registers.

Hardware Specifications

Parameter	Specification
Model	NFAI841-S00 S2
Brand	Yokogawa
Origin	Japan
Weight	0.2 kg
Dimensions	2.2 cm x 12.4 cm x 12.6 cm
Operating Temp	-20 to +70 deg C
Power Consumption	230 mA (5 VDC), 540 mA (24 VDC)
Channel Count	8 Analog Inputs / 8 Analog Outputs
Signal Range	0-20 mA, 4-20 mA, 1-5 VDC
Conversion Resolution	16-bit ADC/DAC
Accuracy	+/-16 uA typical
Isolation Rating	1500 VAC between I/O and backplane

Process Control & Fieldbus Interfacing

The module integrates 4-20 mA HART loop protocol support across its input and output channels, facilitating bidirectional digital data transfer alongside primary analog variables. Internal 1500 VAC galvanic isolation pathways isolate field instrumentation loops from the internal system bus, mitigating ground potential shifts and industrial noise transients. Dedicated surge suppression circuits protect individual channel pathways from high-voltage field spikes, maintaining signal integrity under variable field conditions.

Frequently Asked Questions

Q: Does the unit support online module hot-swapping during active loop operation?

A: Yes, the module features hot-swap capabilities, allowing field technicians to replace an active unit on the backplane without interrupting power to adjacent DCS hardware or shutting down system racks.

Q: How do the output channels handle signal retention during backplane communication loss?

A: The module executes integrated rollback logic, allowing output channels to maintain specified HOLD or SETV fallback states during system control interruptions.

Q: What environmental protection standards apply to this module for harsh process environments?

A: The circuit board assembly features conformal coating compliant with the ISA G3 environmental classification for advanced corrosion resistance.

Field Installation Guidelines

Mount the module vertically into the designated backplane slot of the field control station, pushing firmly until the latching mechanism clicks securely into place. Tighten the top panel retention screw to ensure a low-resistance chassis ground connection to the rack frame.

Route 4-20 mA analog input and output cables through separate low-voltage wire trays, maintaining at least 300 mm clearance from high-voltage AC conductors. Connect incoming field wiring to the pressure clamp terminal block, terminating all cable shields at a central earth grounding bus to prevent ground loops. Verify that ambient operating temperatures within the enclosure remain between -20 and +70 deg C.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

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Maintenance Manager, USA

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Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

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Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.