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.
| 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 |
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.
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.
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