Product Details
The Yokogawa SB302 S1, also cataloged as the SB302 ESB Bus Interface Card, operates as a dedicated hardware component for high-speed data transmission between the Field Control Unit (FCU) and local nodes within Yokogawa CENTUM control system platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | SB302 S1 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | ~0.35 kg |
| Operating Temp | -20 to +60 deg C |
| Power Consumption | Sub-rack backplane powered |
| Bus Interface | ESB Bus (Field Control Unit to Local Nodes) |
| Communication Velocity | High-speed bus communication |
| Redundancy | Dual-redundant configuration support |
4-20 mA HART Loop Protocol and Channel Isolation
The SB302 S1 integrates backplane channel-to-channel isolation networks to shield system data frames from field-level common-mode noise and ground potential differences. Operating within Yokogawa DCS chassis alongside I/O units handling 4-20 mA HART loop protocol field devices, the module preserves signal waveform integrity during deterministic bus transmission cycles. High galvanic separation limits cross-channel interference between high-speed local node communications and process loop input networks.
Frequently Asked Questions
Q: What is the primary function of the SB302 S1 interface card?
A: It provides high-speed, deterministic communications between the main Field Control Unit (FCU) backplane and local I/O nodes.
Q: How does dual-redundancy operate on the SB302 S1?
A: When paired in redundant chassis slots, the secondary card continuously monitors primary bus activity to execute instant failover without disrupting real-time node communications.
Field Installation Guidelines
- ESD Protection: Always wear a grounded anti-static wrist strap before handling the card assembly to prevent electrostatic damage to onboard bus interface ICs.
- Module Insertion: Align the card edges with the designated sub-rack chassis guides and slide smoothly until the rear multi-pin connector fully seats into the backplane.
- Shield Grounding: Ensure all ESB bus cable shields are securely clamped to the system earthing bar at the cabinet entry point to attenuate electromagnetic interference.
- Cable Routing: Maintain physical separation between high-speed ESB bus interconnect cables and high-voltage AC power cabling or heavy inductive load leads.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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