Product Details
The Yokogawa LC51*A, also cataloged as the LC51 RL-BUS Communication Card, operates as a dedicated hardware component for high-speed deterministic bus data exchange within Yokogawa CENTUM CS and CS 3000 control system racks.
Suffix Breakdown & Model Matrix
- LC51: Base model code designating the primary RL-BUS communication card interface hardware.
- *A: Revision or hardware option suffix indicating board assembly circuit revision level.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | LC51*A |
| Brand | Yokogawa |
| Origin | Japan |
| Bus Interface | RL-BUS communication protocol |
| Dimensions | 45.7 cm x 5.1 cm x 17.8 cm |
| Weight | 1.2 kg |
| Operating Temp | 0 to 50 deg C |
| Power Consumption | Standard backplane rail current draw |
Yokogawa Deterministic Communication & Bus Isolation
The LC51*A card handles deterministic token-passing communication over the internal RL-BUS network to interconnect distributed process controllers and I/O subnodes. Integrated physical layer isolation prevents common-mode noise propagation across the communication backplane, safeguarding real-time data transmissions from field device loops—including 4-20 mA HART loop protocol interfaces—against transient electrical ground noise.
Frequently Asked Questions
Q: Does replacing an LC51*A communication card disrupt communication across non-redundant RL-BUS segments?
A: Removing the card from a single-bus node immediately breaks the physical token path on that segment; redundant RL-BUS architecture is required to maintain active communication during card removal.
Q: How does the LC51*A card handle backplane electrical noise during high-speed data transmission?
A: The card incorporates transformer-coupled galvanic isolation and filtering network components at the bus interface to attenuate ground potential variations and EMI.
Field Installation Guidelines
Align the LC51*A communication card vertically with the assigned RL-BUS slot guide rails inside the rack frame, pushing firmly until the backplane connectors fully lock. Tighten top and bottom faceplate retention screws to ensure chassis shield ground continuity. Route all coaxial or twisted-pair bus cables through dedicated cabinet cable channels, maintaining strict physical separation from high-voltage AC distribution power wiring.
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.
Tech & Buying Guide
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