NFAF135-S50 S1 Yokogawa STARDOM Datasheet & Technical Manual

NFAF135-S50 S1 Yokogawa STARDOM 8 Channel Frequency Module

NFAF135-S50 S1 Yokogawa STARDOM 8 Channel Frequency Module

Availability: 20 left in stock

Yokogawa NFAF135-S50 S1 Frequency Input Module The Yokogawa NFAF135-S50 S1, also cataloged as the NFAF135 Frequency Input Module, operates as...

SKU: NFAF135-S50 S1

Manufacturer: Yokogawa
Product No.: NFAF135-S50 S1
Product Type: Frequency Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa NFAF135-S50 S1 Frequency Input Module

The Yokogawa NFAF135-S50 S1, also cataloged as the NFAF135 Frequency Input Module, operates as a dedicated hardware component for high-precision pulse train acquisition and speed monitoring within STARDOM FCN and FCJ autonomous controller platforms.

Hardware Specifications

Parameter	Specification
Model	NFAF135-S50 S1 (Base Model: NFAF135)
Brand	Yokogawa
Origin	Japan
Weight	0.3 kg
Dimensions	30 mm x 130 mm x 100 mm
Operating Temp	-40 to +80 deg C
Power Consumption	300 mA at 5 VDC (Backplane) / 400 mA at 24 VDC (~3 W)
Input Channels	8 isolated channels
Frequency Range	0.01 Hz to 1000 kHz
Input Type	Dry contact pulse (Open collector / Relay) and Voltage pulse
Isolation Voltage	500 VAC between input and system; 500 VAC between channels
Sampling Rate	10 kHz
Resolution	16-bit
Transmitter Power Supply	24 VDC (30 mA) or 12 VDC (40 mA) selectable

Channel Isolation and Loop Response Execution

Designed for high-density frequency monitoring, the Yokogawa NFAF135-S50 S1 delivers continuous pulse processing across 8 isolated channels. Channel-to-channel isolation with 500 VAC dielectric withstand capability protects the internal backplane logic from ground loops and field noise coupling. The module converts incoming high-speed frequency signals into 16-bit process variables, applying low-pass, high-pass, or band-pass filtering to maintain measurement stability under extreme signal jitter. Integrated 24 VDC and 12 VDC power sources directly energize connected field transmitters, streamlining field loop wiring layouts.

Frequently Asked Questions

Q: Does the NFAF135-S50 S1 support live replacement during ongoing controller operations?

A: Yes. Technicians can execute online module replacement on the STARDOM system chassis without turning off main system power or interrupting processing routines on adjacent I/O cards.

Q: What minimum pulse width is required for accurate frequency detection on the input channels?

A: The module internal logic requires a minimum input pulse width of 40 microseconds to ensure reliable state transition processing across the 0.01 Hz to 1000 kHz operating span.

Field Installation Guidelines

Mount the NFAF135-S50 S1 module vertically into the allocated base unit slot, engaging the top and bottom latch mechanisms to secure mechanical contact with the system backplane. Route signal input wires using twisted-shielded pair cables, physically separated from high-voltage motor power leads. Connect the cable shield drain directly to the cabinet ground bar, ensuring the total length does not exceed recommended physical limits for high-frequency signal transmission.

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