NFDV157-S00 Yokogawa STARDOM Datasheet & Technical Manual

Yokogawa NFDV157-S00 STARDOM 32 Channel Digital Input Module

Yokogawa NFDV157-S00 STARDOM 32 Channel Digital Input Module

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Yokogawa NFDV157-S00 STARDOM Isolated Digital Input Module Configured for discrete signal acquisition and system status monitoring in STARDOM FCN/FCJ RTU...

SKU: NFDV157-S00

Manufacturer: Yokogawa
Product No.: NFDV157-S00
Product Type: Digital Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 400g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa NFDV157-S00 STARDOM Isolated Digital Input Module

Configured for discrete signal acquisition and system status monitoring in STARDOM FCN/FCJ RTU and ProSafe-RS platforms, the Yokogawa NFDV157-S00 (NFDV157 Isolated Digital Input Module) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

Suffix Code	Option	Description
NFDV157	Base Model	32-Channel Isolated Digital Input Module (24 V DC)
-S	Standard	Standard Type
0	Always 0	Basic Configuration
0	Always 0	Basic Type

Hardware Specifications

Parameter	Specification
Model	NFDV157-S00
Brand	Yokogawa
Origin	Japan
Weight	0.3 kg to 0.4 kg
Dimensions	130 mm x 107.5 mm x 32.8 mm
Operating Temp	-10 deg C to 55 deg C (Standard) / -40 deg C to 70 deg C (Extended)
Power Consumption	Max. 4.2 W (24 V DC nominal)
Number of Channels	32 isolated digital input channels
Input Signal Type	24 V DC ON/OFF (dry or wet contact)
Response Time	<= 5 ms to 10 ms typical
Galvanic Isolation	Channel-to-channel and channel-to-ground, up to 1500 V AC
Terminal Connection	Pressure clamp terminals
Mounting Format	Base node mounting via DIN rail or panel enclosure
System Compatibility	Yokogawa STARDOM FCN/FCJ, ProSafe-RS SIS, NF Series DCS

Channel-to-Channel Isolation and DCS Integration

The NFDV157-S00 module isolates 32 discrete input points to prevent high-voltage surge propagation from field contactors, switches, and relay contacts into the backplane bus logic. Optocoupler circuits yield galvanic isolation up to 1500 V AC both channel-to-channel and channel-to-ground. While 4-20 mA HART loop protocol architectures handle continuous analog variables, this module processes fast ON/OFF transitions with high noise immunity, filtering high-frequency electrical noise and transient ground loops prior to updating system registers across the internal bus.

Frequently Asked Questions

Q: Does the NFDV157-S00 module support hot-swapping during active system operation?

A: Yes, field engineers can perform online module replacement under live bus power without disrupting processing on adjacent I/O cards, provided the base plate retention screws are fully released before withdrawal.

Q: How does the NFDV157-S00 handle wet versus dry field contact inputs?

A: Internal optical isolation barriers accommodate both potential-free dry contacts powered by an external 24 V DC field loop and active 24 V DC wet contact logic levels without requiring manual jumper adjustments on the board.

Field Installation Guidelines

Mount the NFDV157-S00 module firmly into its designated base plate slot until the rear connector fully seats. Tighten the top and bottom panel retention screws to secure the physical grounding link and prevent connector dislocation caused by cabinet vibration.

Connect field signal wiring to the pressure clamp terminal block using stranded copper conductors. Route 24 V DC digital input wiring in separate cable channels away from high-voltage motor circuits and AC distribution lines, and verify that all field cable shields terminate at the cabinet earth grounding bar.

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