NFLR121-S00 S1 YOKOGAWA Serial Communication Module

YOKOGAWA NFLR121-S00 S1 RS-422 RS-485 Serial Module

YOKOGAWA NFLR121-S00 S1 RS-422 RS-485 Serial Module

Availability: 10 left in stock

YOKOGAWA NFLR121-S00 S1 Serial Communication Module Configured for serial communication processing in Yokogawa DCS networks, the YOKOGAWA NFLR121-S00 S1 (NFLR121...

SKU: NFLR121-S00 S1

Manufacturer: Yokogawa
Product No.: NFLR121-S00 S1
Product Type: Communication Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

YOKOGAWA NFLR121-S00 S1 Serial Communication Module

Configured for serial communication processing in Yokogawa DCS networks, the YOKOGAWA NFLR121-S00 S1 (NFLR121 Serial Communication Module) provides direct physical/electrical execution. The hardware manages asynchronous data frame formatting and signal translation over dual RS-422/RS-485 ports to interface remote field units with primary control node backplanes.

Suffix Breakdown & Model Matrix

Base Model	Suffix / Style Code	Configuration Profile
NFLR121	-S00	Standard physical interface hardware revision
NFLR121	S1	Hardware style/revision level 1

Hardware Specifications

Parameter	Specification
Model	NFLR121-S00 S1
Brand	Yokogawa
Origin	Japan
Weight	0.3 kg
Dimensions	3.2 cm x 14.1 cm x 13.0 cm
Operating Temp	-20 to +70 deg C
Power Consumption	500 mA (backplane load)
Communication Ports	Dual RS-422 / RS-485
Transmission Distance	Up to 1200 meters
Transmission Modes	Half-duplex / Full-duplex
Data Framing	7/8 bits, 1/2 stop bits, Parity: None/Even/Odd
Isolation	Channel-to-channel isolation, 1500 VAC dielectric strength

Process Control & Serial Network Interfacing

The module incorporates channel-to-channel isolation with a 1500 VAC dielectric rating, isolating the internal bus logic from potential ground loop variances and field-side transients. Full EMI foil and braid shielding suppress noise pick-up across long-distance cable runs operating under RS-422/RS-485 protocols. Standard 4-20 mA HART loop and digital communications pass transparently through serialized field networks while maintaining strict frame synchronization.

Frequently Asked Questions

Q: What is the maximum physical cable length supported without signal repeaters?

A: The dual RS-422/RS-485 serial ports support point-to-point and multidrop network runs up to a maximum distance of 1200 meters when using compliant shielded twisted-pair cabling.

Q: How is the serial communication protocol configured on the module?

A: Software parameters set the start-stop synchronization, ASCII/Binary data formats, 7 or 8 character lengths, 1 or 2 stop bits, and None/Even/Odd parity directly through the DCS engineering environment.

Q: What is the backplane current draw for this unit during active operation?

A: The module draws a nominal current of 500 mA directly from the internal system backplane power rail.

Field Installation Guidelines

Insert the module into the designated slot of the DCS rack until the rear connector seats firmly into the backplane, then tighten the top and bottom retaining screws to establish frame ground continuity. Maintain passive airflow surrounding the chassis to keep operating conditions within the -20 to +70 deg C envelope.

Run RS-422 and RS-485 communication wires using shielded twisted-pair cables with a characteristic impedance of 120 ohms. Connect terminating resistors across the physical end-nodes of the RS-485 bus to prevent signal reflections over extended cable distances. Route all serial communication wiring through dedicated low-voltage wire trays, maintaining at least 300 mm separation from AC power lines and motor drive leads.

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