Yokogawa STA4D-00 Dual-Redundant Terminal Block
The Yokogawa STA4D-00 serves as the primary STA4D Pressure Clamp Terminal Block utilized to execute field signal termination across ProSafe-RS control platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | STA4D-00 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.3 kg |
| Dimensions | 65.6 mm x 72 mm x 52.3 mm |
| Operating Temp | -10 to +55 deg C |
| Power Consumption | Passive Terminal Interface Load |
| Configuration | Dual-Redundant |
| Channel Count | 16 Channels |
| Connection Type | M4 Screw Terminal / Pressure Clamp |
| Withstand Voltage | 500 VAC |
| Insulation Resistance | Minimum 100 Mohm (500 VDC) |
| Surge Protection | Built-in Surge Absorber |
| Relative Humidity | 5% to 95% (non-condensing) |
Redundant Channel Isolation & Surge Mitigation
The terminal assembly routes 16 discrete signal paths through a dual-redundant circuit architecture designed for high-availability process automation. Dedicated channel-to-channel isolation prevents electrical cross-talk across redundant loop pathways, while the integrated surge absorber limits line-to-ground voltage spikes to maintain signal integrity during power disturbances.
Frequently Asked Questions
Q: What are the electrical isolation and dielectric limits of the Yokogawa STA4D-00?
A: The terminal block features a withstand voltage rating of 500 VAC and maintains a minimum insulation resistance of 100 Mohm measured at 500 VDC between terminal circuits and ground.
Q: What field conductor fastening mechanism is utilized on the STA4D-00 base?
A: Field connections are secured using robust M4 screw terminals combined with pressure clamp mechanisms to ensure stable wire clamping under ambient vibration.
Field Installation Guidelines
- Verify that all field loop power sources are isolated before attaching conductors to the M4 screw terminals.
- Strip wire insulation to standard lengths and torque M4 terminal screws to recommended industrial limits to prevent terminal strip damage.
- Ensure the terminal block assembly is grounded to the cabinet chassis to enable the internal surge absorber path to function correctly.
- Maintain physical separation between 24 VDC signal wiring and high-voltage power conduits to limit induced noise.
- Connect cable shielding to the designated cabinet earth ground at a single termination point.
Yokogawa STA4D-00 Dual-Redundant Terminal Block
Yokogawa STA4D-00 Dual-Redundant Terminal Block
The Yokogawa STA4D-00 serves as the primary STA4D Pressure Clamp Terminal Block utilized to execute field signal termination across ProSafe-RS control platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | STA4D-00 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.3 kg |
| Dimensions | 65.6 mm x 72 mm x 52.3 mm |
| Operating Temp | -10 to +55 deg C |
| Power Consumption | Passive Terminal Interface Load |
| Configuration | Dual-Redundant |
| Channel Count | 16 Channels |
| Connection Type | M4 Screw Terminal / Pressure Clamp |
| Withstand Voltage | 500 VAC |
| Insulation Resistance | Minimum 100 Mohm (500 VDC) |
| Surge Protection | Built-in Surge Absorber |
| Relative Humidity | 5% to 95% (non-condensing) |
Redundant Channel Isolation & Surge Mitigation
The terminal assembly routes 16 discrete signal paths through a dual-redundant circuit architecture designed for high-availability process automation. Dedicated channel-to-channel isolation prevents electrical cross-talk across redundant loop pathways, while the integrated surge absorber limits line-to-ground voltage spikes to maintain signal integrity during power disturbances.
Frequently Asked Questions
Q: What are the electrical isolation and dielectric limits of the Yokogawa STA4D-00?
A: The terminal block features a withstand voltage rating of 500 VAC and maintains a minimum insulation resistance of 100 Mohm measured at 500 VDC between terminal circuits and ground.
Q: What field conductor fastening mechanism is utilized on the STA4D-00 base?
A: Field connections are secured using robust M4 screw terminals combined with pressure clamp mechanisms to ensure stable wire clamping under ambient vibration.
Field Installation Guidelines
- Verify that all field loop power sources are isolated before attaching conductors to the M4 screw terminals.
- Strip wire insulation to standard lengths and torque M4 terminal screws to recommended industrial limits to prevent terminal strip damage.
- Ensure the terminal block assembly is grounded to the cabinet chassis to enable the internal surge absorber path to function correctly.
- Maintain physical separation between 24 VDC signal wiring and high-voltage power conduits to limit induced noise.
- Connect cable shielding to the designated cabinet earth ground at a single termination point.
