NFAI543-S50 Yokogawa Analog Output Module

16-Channel 4-20mA Output Module | Yokogawa NFAI543-S50 S1

16-Channel 4-20mA Output Module | Yokogawa NFAI543-S50 S1

Availability: 20 left in stock

Yokogawa NFAI543-S50 Analog Output Module The Yokogawa NFAI543-S50 S1, also cataloged as the NFAI543 Analog Output Module, operates as a...

SKU: NFAI543-S50 S1

Manufacturer: Yokogawa
Product No.: NFAI543-S50 S1
Product Type: Analog Output Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa NFAI543-S50 Analog Output Module

The Yokogawa NFAI543-S50 S1, also cataloged as the NFAI543 Analog Output Module, operates as a dedicated hardware component for isolated current loop control within STARDOM FCN and FCJ autonomous controller networks.

Hardware Specifications

Parameter	Specification
Model	NFAI543-S50 S1
Brand	Yokogawa
Origin	Japan
Weight	0.3 kg
Dimensions	100 mm x 110 mm x 30 mm
Operating Temp	0 to +55 deg C
Power Consumption	230 mA at 5 VDC / 540 mA at 24 VDC
Output Channels	16 channels (isolated)
Output Signal	4-20 mA DC
Allowable Load Resistance	0 to 750 ohm
Accuracy	+/-0.3% of full scale
Data Refresh Cycle	10 ms
Isolation Voltage	1500 VAC for 1 min (Output to System)

4-20 mA HART Loop Protocol & Channel Isolation

The Yokogawa NFAI543-S50 S1 current output module utilizes galvanic channel-to-channel isolation networks alongside 1500 VAC withstanding voltage barriers to decouple process control field loops from internal system backplane logic. Supporting 4-20 mA HART loop protocol communications across 16 isolated channels, the module maintains an output step response time under 100 ms while providing open-circuit detection when current drops below 0.65 mA.

Frequently Asked Questions

Q: What action does the module take when an open circuit fault occurs on a signal loop?

A: The onboard diagnostic logic detects open circuits whenever loop current falls to 0.65 mA or less, triggering an internal alarm condition while asserting configurable channel fallback states.

Q: Which physical connector types support field wiring connection to the module?

A: Field connections interface through standard 40-pin MIL connector cables or via dedicated NFTA4S pressure clamp terminal blocks.

Q: Does the module require an external 24 VDC auxiliary power source for field loop driving?

A: Yes, the module consumes 540 mA at 24 VDC to drive field currents up to 20 mA across maximum allowable load resistances of 750 ohm.

Field Installation Guidelines

Engineers must follow precise installation practices when mounting high-density signal conversion modules:

Insert the module securely into an available slot on the STARDOM FCN/FCJ controller base rack until the locking mechanism clicks into position.
Connect field wiring using MIL 40-pin cables or the NFTA4S pressure clamp block, verifying that terminal screws are properly torqued.
Keep signal cables isolated from high-voltage distribution lines to prevent electromagnetic field coupling into current loops.
Ground cable shielding to the designated protective conductor point at a single grounding terminal before powering the 24 VDC supply lines.

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