NFJT100-S100

The Yokogawa NFJT100-S100 is identified as an FCJ (Field Control Unit) Autonomous Controller. It belongs to Yokogawa's FCJ controller product family, designed for autonomous control functions at the field level. The exact hardware configuration, communication interfaces, power requirements, and ordering-code details should be distinguished from those of other FCJ models.

Functional Description

The FCJ is an all-in-one autonomous controller with integrated processing, I/O interfaces, and communication ports. It executes local feedback and sequence control applications without requiring a separate FCN CPU module.

Its integrated I/O supports analog and discrete signal acquisition and output. This arrangement allows field devices to exchange process signals directly with the controller.

I/O Configuration

The standard integrated I/O configuration includes:

• 6 analog inputs (AI): Accept 1-5 V DC signals from field instruments.
• 2 analog outputs (AO): Provide 4-20 mA DC signals for control commands.
• 16 digital inputs (DI): Accept 24 V DC discrete status signals.
• 16 digital outputs (DO): Provide 24 V DC discrete output signals. An external 24 V DC supply is required for the digital output load.

The digital inputs and outputs use grouped common connections. The analog and digital channels support different signal types, so field wiring must be matched to the relevant terminal groups.

Communication and Control

The FCJ provides Ethernet-based control network connectivity, with support for a duplexed network configuration. Two RS-232-C serial ports are available for connecting compatible display units, power monitors, temperature controllers, and other serial devices.

The controller uses IEC 61131-3 programming languages to develop feedback control and sequence control applications. Its ECC memory supports error detection and correction, while RAS functions provide CPU self-diagnostics, temperature monitoring, and I/O diagnostics.

Technical Specifications

Parameter	Specification
Model	NFJT100-S100
Brand	Yokogawa
Product Type	FCJ Autonomous Controller
Controller Family	STARDOM FCJ
Analog Inputs	6 points, 1-5 V DC
Analog Outputs	2 points, 4-20 mA DC
Digital Inputs	16 points, 24 V DC
Digital Outputs	16 points, 24 V DC
Control Network	Ethernet, duplex configuration supported
Serial Interfaces	2 x RS-232-C
Power Supply	24 V DC +/-10%
Current Consumption	800 mA
Dimensions (W x H x D)	213.8 x 156 x 95 mm
Weight	1.7 kg
Mounting	Panel mounting or DIN rail mounting

Frequently Asked Questions

Q: What types of field signals can the NFJT100-S100 handle?

A: Its integrated I/O supports 1-5 V DC analog inputs, 4-20 mA DC analog outputs, and 24 V DC digital input and output signals. These channels provide direct connections between field instrumentation and the controller.

Q: Does the NFJT100-S100 support redundant Ethernet communication?

A: The FCJ supports a duplexed Ethernet control network configuration. The actual network arrangement requires the corresponding network connections and system configuration.

Q: Is the NFJT100-S100 equipped with FOUNDATION Fieldbus communication?

A: The -S configuration identifies a controller without a field network interface. The FOUNDATION Fieldbus H1 interface is associated with the -H configuration, so it should not be assumed to be included in the specified -S model.

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