Product Details
Configured for control logic execution and high-speed digital I/O communication management in CENTUM VP and CS 3000 platforms, the Yokogawa RC1*A (RC1 PLC Interface Module Card) provides direct physical/electrical execution. The rack-mounted unit routes process control signals across system backplane buses to manage digital I/O states and interface local field instrumentation with central processing modules.
Suffix Breakdown & Model Matrix
| Code Element | Specification / Description |
|---|---|
| RC1 | Base model designation for rack-mounted PLC interface module card series |
| *A | Style code Revision A indicating circuit design layout and physical backplane interface revision |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | RC1*A |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 1.0 kg |
| Dimensions | 150 mm x 100 mm x 40 mm |
| Operating Temp | -10 deg C to 55 deg C |
| Power Consumption | Low-voltage DC powered (24 VDC backplane bus) |
| Signal Type | Digital I/O |
| System Compatibility | Yokogawa CENTUM VP / CS 3000 |
| Diagnostic Display | Integrated LED status indicators |
Channel-to-Channel Isolation and DCS Process Communication
The RC1*A card manages high-speed digital I/O signals while interfacing with 4-20 mA HART loop protocol instruments across Yokogawa DCS networks. Galvanic isolation barriers decouple individual channels from the central backplane bus to prevent ground potential differentials from corrupting control signals. Onboard diagnostic circuits continuously monitor line continuity, switching data paths during redundant communication bus failovers to maintain process execution across distributed control nodes.
Frequently Asked Questions
Q: What failover logic occurs during a backplane communication error on the RC1*A?
A: When a backplane bus error is detected, the card executes onboard diagnostic routines and transitions data routing to the secondary redundant bus line without interrupting active digital I/O processing cycles.
Q: Is hot-swapping supported for the RC1*A card within an active DCS subrack?
A: Hot-swapping is permitted provided the subrack configuration supports redundant power and bus routing, and the secondary interface card is fully initialized prior to removing the primary module.
Q: What diagnostic indications are provided on the module front panel?
A: Onboard diagnostic LEDs indicate module operational status, backplane power delivery, and active digital I/O communication activity for real-time field troubleshooting.
Field Installation Guidelines
- Rack Slot Mounting: Align the RC1*A card with the subrack guide rails in the control cabinet. Slide the module into position until the rear backplane connector fully seats, then tighten the panel retaining screws.
- Grounding & Shielding: Terminate digital I/O signal cable shields directly to the main cabinet functional earth (FE) ground bus bar at a single point to prevent ground loops and high-frequency noise interference.
- Wiring Isolation: Route low-voltage DC logic and communication cables in dedicated wire ducts physically separated from high-voltage AC distribution power cables.
- Thermal Clearance: Maintain adequate vertical clearance above and below the subrack assembly to permit natural convection airflow, ensuring operating ambient temperatures stay between -10 deg C and 55 deg C.
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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