Yokogawa MUD*A Terminal Board | CENTUM VP/STARDOM I/O Interface

Shopify Product Title:

Yokogawa MUD-111 / MUD-121 A/D Converter Module | CENTUM-XL / uXL DCS | Multi-Channel Universal Input

Product Description:

The Yokogawa MUD-111 and MUD-121 A/D converter modules are integral components of the CENTUM-XL and uXL Distributed Control Systems (DCS). These modules are designed to interface analog field signals (such as DC voltage or current) with the control station's digital processing bus, converting these signals into readable digital data for control and monitoring applications.

As part of the legacy Yokogawa MUD series, these modules are known for their high reliability, precise signal conversion, and robust isolation features, making them critical for legacy systems still in operation in refineries, chemical plants, and other industrial environments. The MUD-111 and MUD-121 provide seamless integration into older systems, delivering stable and accurate analog-to-digital conversions even in noisy, electrically harsh industrial environments.

Key Features:

1. Reliable Signal Conversion:

• The MUD-111 and MUD-121 modules support 16 input channels (typically), converting DC voltage (1 to 5 VDC) or 4 to 20 mA signals (via a shunt resistor) into digital data for processing by the control system.

2. High Resolution & Speed:

• Resolution: 12-bit or 13-bit depending on the model.

• Conversion Speed: Capable of converting up to 16 channels within 10 ms to 100 ms, offering quick and efficient signal processing for fast-paced industrial operations.

3. Accurate & Isolated Signal Handling:

• Accuracy: ±0.1% of full scale, ensuring precise and reliable data for control systems.

• Isolation: The module provides channel-to-ground and channel-to-bus isolation, protecting sensitive control systems from external electrical interference.

4. Dual-Redundant Operation:

• The MUD modules support redundant configurations. In a duplexed I/O nest, two modules operate in parallel. If one module fails, the standby unit automatically takes over without interrupting the operation, ensuring continuous system functionality.

5. Self-Diagnostics:

• Continuous internal diagnostics are performed by the module. If the A/D converter drifts out of tolerance or an internal fault occurs, the module triggers a "FAIL" indicator (LED) and sends an alert to the Field Control Station (FCS) for maintenance.

6. Flexible Signal Range:

• While the primary configuration supports 1-5V signals, the MUD-111 and MUD-121 can be configured (via jumpers or software) to handle other signal ranges like 0-10V or -10V to +10V, catering to specific sensor requirements.

7. Standardized Mounting:

• These modules are designed to install into the standard Yokogawa I/O nests, ensuring straightforward integration into existing Yokogawa systems.

Technical Specifications:

Applications:

The Yokogawa MUD-111 and MUD-121 modules are commonly used in legacy CENTUM-XL and uXL systems, primarily in industries like refining, chemical production, and power generation. These modules enable high-accuracy analog-to-digital conversions for field devices such as transmitters and sensors, which are essential for continuous process control. In systems where uptime and reliability are paramount, the MUD series modules are a trusted component in maintaining robust operations.

Maintenance and Lifecycle:

• Legacy Status: The MUD-A series modules are part of Yokogawa's legacy product line. While newer systems like CENTUM VP have transitioned to the FIO architecture, the MUD-111 and MUD-121 remain in high demand as spare parts for existing CS 3000 and older systems.

• Module Replacement: When replacing a MUD-A module, ensure the Style Code (e.g., Style S1, S2) matches to maintain compatibility with the backplane.

• Connection: In many installations, the MUD-A module is paired with a Terminal Board (TE) and a multi-core KS Cable to connect to field wiring.