Yokogawa NFTI3S-00 Pressure Clamp Terminal Block Module
Configured for pressure-clamp signal termination in Yokogawa DCS subracks, the Yokogawa NFTI3S-00 (NFTI3S Terminal Block Module) provides direct physical/electrical execution for interconnecting field instrumentation to system I/O modules.
Suffix Breakdown & Model Matrix
The suffix designation defines the physical connection style and structural hardware option for the terminal assembly.
| Suffix Code | Termination Type | Option Description |
|---|---|---|
| NFTI3S-00 | Pressure Clamp | Standard style code with dual-row pressure-clamp terminals |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | NFTI3S-00 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.3 kg |
| Dimensions | 22 mm x 124 mm x 126 mm |
| Operating Temp | -20 to 60 deg C |
| Power Consumption | Passive physical terminal assembly |
| Product Category | Pressure Clamp Terminal Block Module |
| Connection Type | Industrial pressure-clamp connection system |
| Mounting Method | Panel or system baseplate installation |
4-20 mA HART Loop Protocol and CJC Signal Preservation
The Yokogawa NFTI3S-00 terminal block maintains constant contact force across individual conductor terminations to eliminate contact resistance fluctuations. In high-density DCS cabinets processing low-level analog currents and 4-20 mA HART loop protocol telemetry, the spring-loaded pressure clamps prevent signal attenuation caused by vibration or thermal expansion. The internal busbar layout minimizes thermal gradients across adjacent channels, ensuring stable cold junction compensation (CJC) reference tracking for temperature signal conditioning cards.
Frequently Asked Questions
Q: Does the NFTI3S-00 require wire ferrules for multi-stranded field conductor terminations?
A: Stripped solid or fine-stranded copper wires can be inserted directly into the pressure-clamp contacts without crimped ferrules while maintaining gas-tight electrical contact.
Q: How does the NFTI3S-00 withstand cabinet vibration without periodic maintenance?
A: The tension spring mechanism applies continuous clamping force on inserted conductors, preventing loose connection faults caused by mechanical vibration or thermal cycling over long operational lifecycles.
Field Installation Guidelines
- Strip field wire insulation to the manufacturer-specified length, ensuring no exposed conductor strands extend beyond the terminal entry housing.
- Insert a flat-head terminal screwdriver into the actuation slot to open the internal clamp mechanism before fully inserting the wire end.
- Remove the screwdriver tool to release the spring mechanism and lock the conductor securely into the contact assembly.
- Route field signal cables through dedicated wire channels, maintaining adequate separation from AC power lines and drive wiring.
- Bond cable shield drain wires directly to the cabinet ground bar using a low-impedance grounding strip at the cable entry gland plate.
Yokogawa NFTI3S-00 Pressure Clamp Terminal Block Module
Yokogawa NFTI3S-00 Pressure Clamp Terminal Block Module
Configured for pressure-clamp signal termination in Yokogawa DCS subracks, the Yokogawa NFTI3S-00 (NFTI3S Terminal Block Module) provides direct physical/electrical execution for interconnecting field instrumentation to system I/O modules.
Suffix Breakdown & Model Matrix
The suffix designation defines the physical connection style and structural hardware option for the terminal assembly.
| Suffix Code | Termination Type | Option Description |
|---|---|---|
| NFTI3S-00 | Pressure Clamp | Standard style code with dual-row pressure-clamp terminals |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | NFTI3S-00 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.3 kg |
| Dimensions | 22 mm x 124 mm x 126 mm |
| Operating Temp | -20 to 60 deg C |
| Power Consumption | Passive physical terminal assembly |
| Product Category | Pressure Clamp Terminal Block Module |
| Connection Type | Industrial pressure-clamp connection system |
| Mounting Method | Panel or system baseplate installation |
4-20 mA HART Loop Protocol and CJC Signal Preservation
The Yokogawa NFTI3S-00 terminal block maintains constant contact force across individual conductor terminations to eliminate contact resistance fluctuations. In high-density DCS cabinets processing low-level analog currents and 4-20 mA HART loop protocol telemetry, the spring-loaded pressure clamps prevent signal attenuation caused by vibration or thermal expansion. The internal busbar layout minimizes thermal gradients across adjacent channels, ensuring stable cold junction compensation (CJC) reference tracking for temperature signal conditioning cards.
Frequently Asked Questions
Q: Does the NFTI3S-00 require wire ferrules for multi-stranded field conductor terminations?
A: Stripped solid or fine-stranded copper wires can be inserted directly into the pressure-clamp contacts without crimped ferrules while maintaining gas-tight electrical contact.
Q: How does the NFTI3S-00 withstand cabinet vibration without periodic maintenance?
A: The tension spring mechanism applies continuous clamping force on inserted conductors, preventing loose connection faults caused by mechanical vibration or thermal cycling over long operational lifecycles.
Field Installation Guidelines
- Strip field wire insulation to the manufacturer-specified length, ensuring no exposed conductor strands extend beyond the terminal entry housing.
- Insert a flat-head terminal screwdriver into the actuation slot to open the internal clamp mechanism before fully inserting the wire end.
- Remove the screwdriver tool to release the spring mechanism and lock the conductor securely into the contact assembly.
- Route field signal cables through dedicated wire channels, maintaining adequate separation from AC power lines and drive wiring.
- Bond cable shield drain wires directly to the cabinet ground bar using a low-impedance grounding strip at the cable entry gland plate.
