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The Yokogawa SED2D-11 serves as the primary SED2D-11 Digital Terminal Board utilized to execute field signal distribution and termination across distributed control system platforms.
| Parameter | Specification |
|---|---|
| Model | SED2D-11 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 2.3 kg |
| Dimensions | 482.6 mm x 177.0 mm x 85.0 mm |
| Operating Temp | -20 deg C to +60 deg C |
| Power Consumption | Passive termination board |
| Channels | 4 channels |
| Voltage Tolerance | 2000 V AC for 1 minute |
| Current Capacity | 5 A per channel |
The hardware configuration maintains strict electrical isolation across terminal pathways to suppress common-mode electrical noise and prevent ground fault propagation between field loops. Integration with standard 4-20 mA HART loop protocol parameters and discrete signal paths ensures transparent transmission of analog and digital data streams directly to control system I/O cards without signal degradation.
Q: Are there specific physical constraints when wiring high-density multi-channel terminal boards?
A: Field wiring must maintain adequate separation from high-voltage power conduits and utilize twisted-pair shielded cables to preserve signal integrity.
Q: How is the terminal board grounded to mitigate transient surge events?
A: The chassis incorporates dedicated grounding studs designed for direct low-impedance connection to the main cabinet ground bus bar.
Mount the terminal board securely onto standard 19-inch rack profiles or designated cabinet panels using all available mounting holes. Terminate incoming field conductors to the designated screw or clamp terminals, ensuring proper torque limits are applied to prevent conductor shear. Verify continuous shield continuity and ground drain termination before energizing associated loop circuits.
