Description

Yokogawa NFTB5S-00 Pressure Clamp Terminal Block

The Yokogawa NFTB5S-00, also cataloged as the NFTB5S-00 basic-type terminal block, operates as a dedicated hardware component for 32-channel digital I/O wiring interface within STARDOM FCN/FCJ series controllers. It provides a pressure clamp connection mechanism for high-density digital modules, enabling secure and tool-free field wire termination.

HardwareSpecifications

Parameter	Specification
ModelBrand	Yokogawa NFTB5S-00
Origin	Japan
Channels	32 digital input channels
ConnectionType	Spring-loaded pressure clamp
ModuleInterface	50-pin dedicated multi-pin connector
RatedVoltage	24 V DC
Dimensions	12.0 cm × 8.0 cm × 4.0 cm
Weight	0.3 kg
OperatingTemp	-20 degC to +60 degC
StorageTemp	-40 degC to +85 degC
Humidity	10%–90% RH (non-condensing)
PowerConsumption	Dependent on connected I/O module

Process Control Connectivity

The NFTB5S-00 provides channel-to-channel isolation when interfacing with Yokogawa NFDV151, NFDV157, and NFDV161 digital input modules. The design maintains signal integrity across multiple high-density inputs and supports DCS-standard 24 V DC logic levels. Its interface architecture preserves loop integrity for 4-20 mA HART and FOUNDATION Fieldbus/Profibus PA systems, preventing cross-talk between channels. Cold junction compensation (CJc) is maintained when used with compatible Yokogawa modules to ensure accurate signal conversion.

Frequently Asked Questions

Q: Does the NFTB5S-00 support hot-swapping of the connected digital module?
A: The terminal block itself is passive; hot-swap compatibility depends on the connected NFDV module and the STARDOM system backplane. Field wires can be connected/disconnected with power off to avoid signal disruption.

Q: What is the maximum wire gauge supported by the pressure clamp?
A: The spring-loaded pressure clamp accommodates standard field wiring up to 2.5 mm² (14 AWG) stranded conductors without crimping.

Q: Can the NFTB5S-00 be used with multiple NFDV161 64-channel modules?
A: Yes, but multiple blocks must be paired according to the rack configuration. Ensure proper labeling to maintain channel-to-channel mapping integrity.

Field Installation Guidelines

1. Verify module compatibility before installation (NFDV151, NFDV157, or NFDV161).
2. Mount the terminal block onto the module front interface, ensuring full 50-pin engagement.
3. Connect field wiring using the pressure clamp mechanism; strip wires to recommended length (typically 8–10 mm) for secure insertion.
4. Avoid over-tightening or bending wires; maintain straight routing to prevent stress on the clamp.
5. Ground shielded cables to the module or enclosure according to industrial grounding standards.
6. Maintain separation from high-voltage AC lines to prevent electromagnetic interference.
7. Inspect connections periodically for corrosion or mechanical wear during routine maintenance.

Specifications

• Brand: Yokogawa

Advantages

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