Yokogawa NFJT100-S100 Isolated Junction Terminal Module – Product Description

Overview

The Yokogawa NFJT100-S100 is a high-density isolated junction terminal module designed for secure field wiring in industrial automation systems. It provides a reliable interface between field devices and Yokogawa CENTUM VP DCS or ProSafe‑RS SIS systems. Moreover, its compact rack-mounted design simplifies installation while supporting redundant wiring for mission-critical processes.

Technical Specifications

Electrical & I/O

• Number of Terminals: 100 isolated junction points

• Signal Types Supported: Analog and digital signals (depending on connected I/O modules)

• Rated Voltage: 24 V DC typical

• Rated Current: Up to 2 A per terminal

• Isolation: Channel-to-channel and channel-to-system

• Wiring Method: Screw-type terminals for secure connections

• Cable Type: Supports shielded twisted pair and standard industrial wiring

Performance

• Reliability: Designed for continuous operation in harsh industrial environments

• Noise Immunity: High resistance to electrical noise and EMI

• Diagnostics: LED indicators for module status and wiring integrity

• Redundancy: Supports redundant wiring paths with compatible I/O modules

Mechanical

• Mounting: Rack-mounted in Yokogawa system backplane or cabinet

• Dimensions (W × H × D): 130 × 130 × 32 mm

• Weight: 0.6 kg

• Cooling: Natural convection

• Protection: IP20

Communication & Integration

• Interface: Yokogawa NF backplane bus

• Compatibility: Fully compatible with CENTUM VP DCS and ProSafe‑RS SIS

• Configuration: Managed via Yokogawa engineering tools

Environmental & Compliance

• Operating Temperature: 0 °C to +55 °C

• Storage Temperature: −20 °C to +70 °C

• Relative Humidity: 5–95% non-condensing

• Certifications: CE, UL, CSA

• Origin: Manufactured in Japan

FAQ

Q1: How many junction points does the NFJT100-S100 provide?
It provides 100 isolated junction terminals for analog and digital signals.

Q2: What types of signals are supported?
Supports both analog and digital signals depending on connected I/O modules.

Q3: What is the rated current per terminal?
Up to 2 A per terminal for standard industrial wiring.

Q4: Can it be used in redundant wiring setups?
Yes, it supports redundant wiring paths with compatible I/O modules.

Q5: What are the environmental limits for operation?
Operating temperature is 0–55 °C and relative humidity 5–95% non-condensing.