Description

Yokogawa NFTI3S-00 Pressure Clamp Terminal Block

Configured for routing analog and pulse field signals in STARDOM FCN/FCJ I/O architectures, the Yokogawa NFTI3S-00 (NFTI3S-00 Pressure Clamp Terminal Block) provides direct physical/electrical execution between field wiring and channel-to-channel isolated I/O modules within Yokogawa STARDOM systems.

Suffix Breakdown & Model Matrix

• NFTI3S-00: Standard configuration
• No further suffix segmentation defined in provided specification
• Optional variants may include surge/lightning protection versions (different ordering suffixes, not defined here)

Hardware Specifications

Parameter	Specification
ModelBrand	Yokogawa NFTI3S-00
Origin	Japan (Yokogawa Electric Corporation design origin)
Weight	0.2kg
Dimensions	Approx. 2.2 cm x 12.4 cm x 12.6 cm
OperatingTemp	-20 degC to +60 degC
PowerConsumption	Passive device, no power consumption
Signal Type	Analog and pulse I/O routing
Module Interface	40-pin MIL connector
Field Wiring Method	Spring-loaded pressure clamp terminals
Supported Wire Range	Approx. AWG28 to AWG14 (with ferrules)

Yokogawa Channel-to-Channel Isolation Interface Characteristics

The NFTI3S-00 is aligned with Yokogawa isolated I/O architectures where each channel maintains electrical separation at module level. The terminal block does not perform signal conditioning but preserves isolation integrity by maintaining controlled impedance routing from field terminals to the 40-pin MIL back interface.

In STARDOM FCN/FCJ systems, this topology reduces cross-channel interference in mixed analog (4-20 mA) and pulse inputs, particularly in high-density I/O configurations such as NFAI135, NFAP135, and NFAF135 modules. The pressure clamp mechanism ensures stable contact force without periodic retightening, maintaining low contact resistance under vibration exposure.

Frequently Asked Questions

Q: Does NFTI3S-00 support hot-swap of connected I/O modules?
A: The terminal block itself is passive and does not define hot-swap capability. Hot-swap behavior is determined by the connected STARDOM I/O module and controller backplane design.

Q: Is channel-to-channel isolation affected by the terminal block wiring interface?
A: No. Isolation is implemented inside the I/O module. The NFTI3S-00 only provides passive conductive routing via 40-pin MIL interface without bridging channels.

Q: Can ferrule termination be used with the pressure clamp mechanism?
A: Yes. Stranded conductors are typically used with ferrules to maintain stable contact force and minimize long-term loosening under vibration.

Field Installation Guidelines

• Verify correct alignment of the 40-pin MIL connector before engagement to avoid pin deformation
• Use ferrule-terminated stranded wire for vibration-prone installations
• Maintain minimum separation between analog and pulse field cables to reduce external EMI coupling
• Ensure all conductors are fully seated in the pressure clamp terminal before commissioning
• Avoid excessive bending radius near terminal entry points to prevent mechanical stress on conductors
• Confirm module-side latch locking after insertion to maintain contact integrity

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems