The Yokogawa SED2D-11, also cataloged as the SED2D Digital Terminal Board, operates as a dedicated hardware component for field I/O signal routing and termination within Yokogawa industrial control systems.
| Parameter | Specification |
|---|---|
| Model | SED2D-11 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 2.3 kg |
| Dimensions | 482.6 mm (W) x 177 mm (H) x 85 mm (D) |
| Operating Temp | -20 deg C to +60 deg C |
| Humidity Range | 10% to 90% RH (non-condensing) |
| Channels | 4 channels |
| Signal Types | Analog and digital |
| Current Capacity | 5 A per channel |
| Voltage Tolerance | 2000 V AC for 1 minute |
| Insulation Resistance | Min. 100 MΩ at 500 V DC |
The terminal board incorporates internal spacing and isolation barriers to maintain robust signal transmission, rated for a dielectric withstand of 2000 V AC for 1 minute across its 4 operational channels. Providing termination for both analog (including 4-20 mA loop protocols) and digital field signals, the unit limits potential ground loops and electrical interference from field transmitters. Each channel supports a current capacity of up to 5 A, ensuring stable continuity for high-load field devices and maintaining a minimum insulation resistance of 100 MΩ at 500 V DC to protect central processing electronics from field-side voltage transients.
Q: What is the maximum current capacity supported by the SED2D-11 terminal board?
A: The board supports a maximum continuous current load of 5 A per individual channel.
Q: Can this terminal board process both analog and digital field signals simultaneously?
A: Yes, the hardware is configured to terminate and route both analog and digital signal types across its 4 available channels.
Q: What is the dielectric withstand rating for the terminal connections?
A: The terminal connections are rated to endure a voltage tolerance of 2000 V AC for up to 1 minute.
Mount the terminal board assembly directly into the designated Yokogawa control cabinet, securing the chassis with standard hardware to ensure structural stability across its 482.6 mm width. Route high-current field wiring separately from low-voltage signal cables to mitigate electromagnetic induction. Terminate incoming field signal wires to the designated channel clamps, ensuring all exposed shields are grounded to a single point on the cabinet earth busbar. Verify that any metal conduit entries into the enclosure maintain a minimum engagement of 5 full NPT threads to preserve panel integrity.
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