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Yokogawa MUD*A CENTUM VP Terminal Board

Configured for specific technical task execution in CENTUM VP, ProSafe-RS, and SCADA architectures, the Yokogawa MUD*A (Yokogawa MUD*A Terminal Board) provides direct physical/electrical execution of field signal termination routing. The unit manages analog, digital, and thermocouple wiring loops before routing signals directly to matching internal system input modules.

Hardware Specifications

Parameter Specification
Model MUD*A
Brand Yokogawa
Origin Japan
Weight 1.3 kg
Dimensions 100 x 75 x 25 mm
Operating Temp -20 to +60 deg C
Power Consumption Passive component (negligible)
Number of Terminals 32 screw-type terminals (up to 64 wire points)
Wire Gauge Compatibility 24 AWG to 14 AWG
Current Rating Up to 3 A per terminal
Voltage Rating Up to 250 VAC/VDC
Insulation Resistance Minimum 100 MΩ at 500 VDC
Withstand Voltage 500 VAC for 1 minute

Process Control Integration & Signal Isolation

The interface board processes diverse external electrical paths using built-in channel-to-channel isolation matrices to eliminate ground differentials. The copper trace routing maintains strict 4-20 mA HART loop protocol signal transparency, permitting high-frequency digital communication to pass onto the host distributed control system. For mixed temperature loops, integrated cold junction compensation (CJC) circuits generate continuous reference adjustments, ensuring precision measurement stability for connected thermocouple sensors.

Frequently Asked Questions

Q: Can an engineer swap this board while the active control loops are energized? A: The hardware does not support hot-swap insertion or extraction under load. Operational safety constraints demand that technicians fully de-energize all connected 250 VAC/VDC field lines before performing any replacement or maintenance activities.

Q: How does the assembly handle mechanical energy in close proximity to rotating machinery? A: The physical chassis structure passes independent type testing for shock and vibration, withstanding peak displacements of 0.5 mm P-P across 0 to 14 Hz frequencies and shock decelerations up to 5 g for 11 ms durations.

Q: Is a battery configuration necessary to maintain active configuration loops during power failure? A: The hardware operates as a purely passive distribution network requiring zero continuous operational current. All calibration parameters and reference thresholds depend entirely on the host distributed control system memory.

Field Installation Guidelines

  1. Chassis Fastening: Anchor the module structure onto standard symmetric DIN rails or bolt it securely onto the back panel layout of the cabinet enclosure. Confirm all tracking clips click firmly to establish structural integrity.
  2. Signal Separation: Run analog, digital, and thermocouple sensor field cabling in isolated conduit groups. Maintain physical distance thresholds between high-voltage power distribution conduits and low-level analog cables to minimize cross-talk risks.
  3. Ground Earth Connection: Connect all external braided cable shields directly to the designated functional earth bar of the cabinet housing. Ensure the common ground pathway exhibits less than 1 ohm impedance to avoid high-frequency electrical interference.

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