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The Yokogawa S9681DB-0, also cataloged as the S9681DB Terminal Board, serves as the primary S9681DB signal interconnection component utilized to execute high-density termination for analog, digital, and HART field devices...
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The Yokogawa S9681DB-0, also cataloged as the S9681DB Terminal Board, serves as the primary S9681DB signal interconnection component utilized to execute high-density termination for analog, digital, and HART field devices across CENTUM VP and CS series distributed control systems.
| Parameter | Specification |
|---|---|
| Model | S9681DB-0 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.5 kg |
| Dimensions | 120 mm x 160 mm x 40 mm |
| Operating Temp | -20 deg C to 60 deg C |
| Power Consumption | 5 W |
| Power Supply | 24 V DC |
| Number of Channels | 32 |
| Input Signal Range | -32 V to 32 V / 0-20 mA / 4-20 mA |
| Output Type | Relay (2 A at 250 V AC) |
The S9681DB-0 provides a centralized interface point for 32 channels of mixed-signal types, bridging field-side instrumentation to the DCS I/O backplane. The board's architecture is optimized for HART communication, ensuring that digital diagnostic signals are transparently passed through to the control system. By providing integrated relay outputs rated for 2 A at 250 V AC, the module also supports direct discrete control of field actuators, reducing the need for external interposing relays.
Q: Can the S9681DB-0 handle simultaneous digital and analog inputs across its 32 channels?
A: Yes, the board is designed for high-density mixed-signal applications. However, ensure that the corresponding DCS I/O card configuration matches the specific input type assigned to each channel to prevent damage to the input sensing circuitry.
Q: Are the relay outputs isolated?
A: The relay outputs provide physical isolation between the control circuit and the field load. However, users should verify local circuit requirements for additional surge suppression if driving inductive loads (e.g., motor contactors or high-wattage solenoids) to protect the onboard relay contacts.
