Yokogawa VF311 S1 V-NET Station Module
The Yokogawa VF311 S1, also cataloged as the VF311 V-NET Station Module, operates as a dedicated hardware component for high-speed deterministic bus communication within Yokogawa CENTUM VP and CS 3000 DCS platforms. It interfaces directly between field control stations (FCS) and the V-NET network backbone to execute real-time control packet transmission and node synchronization.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | VF311 S1 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.45 kg |
| Dimensions | 145 mm x 112 mm x 100 mm |
| Operating Temp | Standard Industrial Grade (0 to 60 deg C operational environment) |
| Power Consumption | 220 to 240 V AC supply |
| Module Type | V-NET Station Module |
| Communication Protocol | Yokogawa V-NET Proprietary Protocol |
| Communication Speed | Up to 1 Mbit/s |
| Device Capacity | Up to 128 connected devices |
| Mounting Format | Rack-mounted |
| Status Diagnostics | Integrated LED indicators for communication and fault status |
4-20 mA HART Loop Protocol Integration
While functioning as a high-speed physical layer V-NET communication module, the unit transparently relays process data and configuration telegrams originating from field-level 4-20 mA HART loop protocol I/O modules. Internal bus arbitration and noise-filtering circuitry prevent transmission jitter, maintaining synchronous packet transport across the 1 Mbit/s V-NET bus structure. This architecture ensures that real-time analog variables and background HART diagnostic telemetry reach the control station without channel cross-talk or timing degradation.
Frequently Asked Questions
Q: How many total node stations can the VF311 S1 module support across a single V-NET bus segment?
A: The VF311 S1 module supports communication management for up to 128 connected devices on the V-NET network backbone.
Q: What diagnostic indicators are available on the module front panel for troubleshooting?
A: The module incorporates front-panel LED status indicators that provide real-time visual feedback on active V-NET bus traffic, link integrity, and hardware fault conditions.
Field Installation Guidelines
- Rack Mounting: Slide the VF311 S1 module into the designated slot of the CENTUM station rack. Hand-tighten the module retaining screws to secure mechanical locking and chassis ground contact.
- Power & Network Connections: Wire the primary 220 to 240 V AC supply line to the power input terminals. Terminate incoming and outgoing V-NET bus cables using approved coaxial or twisted-pair connectors.
- Shielding & Grounding: Connect overall network cable shields directly to the master cabinet earth ground bar to suppress common-mode electromagnetic interference.
Yokogawa VF311 S1 V-NET Station Module
Yokogawa VF311 S1 V-NET Station Module
The Yokogawa VF311 S1, also cataloged as the VF311 V-NET Station Module, operates as a dedicated hardware component for high-speed deterministic bus communication within Yokogawa CENTUM VP and CS 3000 DCS platforms. It interfaces directly between field control stations (FCS) and the V-NET network backbone to execute real-time control packet transmission and node synchronization.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | VF311 S1 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.45 kg |
| Dimensions | 145 mm x 112 mm x 100 mm |
| Operating Temp | Standard Industrial Grade (0 to 60 deg C operational environment) |
| Power Consumption | 220 to 240 V AC supply |
| Module Type | V-NET Station Module |
| Communication Protocol | Yokogawa V-NET Proprietary Protocol |
| Communication Speed | Up to 1 Mbit/s |
| Device Capacity | Up to 128 connected devices |
| Mounting Format | Rack-mounted |
| Status Diagnostics | Integrated LED indicators for communication and fault status |
4-20 mA HART Loop Protocol Integration
While functioning as a high-speed physical layer V-NET communication module, the unit transparently relays process data and configuration telegrams originating from field-level 4-20 mA HART loop protocol I/O modules. Internal bus arbitration and noise-filtering circuitry prevent transmission jitter, maintaining synchronous packet transport across the 1 Mbit/s V-NET bus structure. This architecture ensures that real-time analog variables and background HART diagnostic telemetry reach the control station without channel cross-talk or timing degradation.
Frequently Asked Questions
Q: How many total node stations can the VF311 S1 module support across a single V-NET bus segment?
A: The VF311 S1 module supports communication management for up to 128 connected devices on the V-NET network backbone.
Q: What diagnostic indicators are available on the module front panel for troubleshooting?
A: The module incorporates front-panel LED status indicators that provide real-time visual feedback on active V-NET bus traffic, link integrity, and hardware fault conditions.
Field Installation Guidelines
- Rack Mounting: Slide the VF311 S1 module into the designated slot of the CENTUM station rack. Hand-tighten the module retaining screws to secure mechanical locking and chassis ground contact.
- Power & Network Connections: Wire the primary 220 to 240 V AC supply line to the power input terminals. Terminate incoming and outgoing V-NET bus cables using approved coaxial or twisted-pair connectors.
- Shielding & Grounding: Connect overall network cable shields directly to the master cabinet earth ground bar to suppress common-mode electromagnetic interference.
