Product Details
Configured for field signal processing and bus data exchange in Yokogawa control systems, the Yokogawa LC81*B (LC81 Interface Module Card) provides direct physical/electrical execution.
Suffix Breakdown & Model Matrix
- LC81: Base module code designating the RL-Bus interface card architecture.
- *B: Revision suffix specifying internal PCB layout and circuit component designator level.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | LC81*B |
| Brand | Yokogawa |
| Origin | Japan |
| Module Type | RL-Bus Interface Card |
| Analog Input Range | 4 to 20 mA |
| Power Supply Voltage | 12 to 36 V DC |
| Weight | 0.5 kg |
| Dimensions | Standard Yokogawa Interface Card Chassis |
| Operating Temp | -20 to +85 deg C |
| Power Consumption | Passive bus backplane load (governed by 12 to 36 V DC input) |
Yokogawa Loop Protocol & Channel Isolation
The LC81*B interface card conditions 4 to 20 mA analog input signals across its hardware channel array while executing data serialization over the RL-Bus link. Integrated galvanic isolation barriers mitigate common-mode noise propagation between field instrument circuits and internal system backplane logic. The module architecture maintains channel-to-channel isolation parameters to isolate digital 4-20 mA HART loop protocol signals from ambient high-frequency electrical interference.
Frequently Asked Questions
Q: What power supply range supports stable execution of the LC81*B interface module card?
A: The board operates across an input voltage window of 12 to 36 V DC, accommodating nominal 24 V DC field loop power configurations.
Q: Can the LC81*B process analog input signals below 4 mA without triggering signal fault conditions?
A: The input circuitry continuously digitizes the full 4 to 20 mA range; values dropping significantly below 4 mA trigger live open-circuit diagnostic flags within the controller memory map.
Field Installation Guidelines
Align the LC81*B card with the designated rack slot guide rails and push firmly until the rear connector seats into the RL-Bus backplane interface. Fasten top and bottom faceplate retention screws to ensure continuous chassis grounding and structural stability. Ensure field wiring for 4 to 20 mA analog loops uses twisted-shielded pairs, grounded at a single earth bus terminal inside the control cabinet to eliminate ground loops.
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
Transforming Shop Floor Data into Actionable Insights: A Deep Dive into MES
Manufacturing Execution Systems serve as the digital backbone of modern factory floors. Positioned at Level 3 of the ISA-95 automation pyramid, MES links enterprise resource planning with real-time shop floor control systems. Today, industrial operators rely on MES software to bridge operational strategy with physical production execution.
Managed Switch vs. Unmanaged Switch: Industrial Ethernet Architecture
Hot Standby vs. Cold Standby Redundancy in Industrial Automation
System availability determines process safety and productivity in industrial automation. Control engineers deploy redundancy to eliminate single points of failure. This technical guide evaluates Hot Standby vs. Cold Standby architectures, comparing failover speeds, memory sync, cost trade-offs, and field selection criteria.