Configured for 24 VDC voltage signal acquisition in ProSafe-RS and CENTUM VP platforms, the Yokogawa SDV144-S63/PRP (SDV144 Digital Input Module) provides direct physical/electrical execution. The module receives discrete status inputs from field sensors, switches, and relays over 16 isolated channels. Featuring ISA Standard G3 conformal coating and false-insertion prevention pins, the unit executes real-time field monitoring across redundant control networks.
| Parameter | Specification |
|---|---|
| Model | SDV144-S63/PRP |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.36 - 0.41 kg (1.5 - 2.0 kg shipping weight) |
| Dimensions | Standard Yokogawa I/O module footprint |
| Operating Temp | -20 to 70 deg C (G3 standard compliant) |
| Power Consumption | 300 mA (5 VDC), 150 mA (24 VDC) |
| Number of Inputs | 16 channels |
| Rated Input Voltage | 24 VDC +/- 10% |
| Input Current | 6 mA per channel |
| ON/OFF Thresholds | ON >= 15 VDC, OFF <= 5 VDC |
| Max Permissible Voltage | 30 VDC |
| Response Time | <= 40 ms |
| Isolation Voltage | 1500 VAC between input terminals and system logic for 1 minute |
Yokogawa DCS and safety architectures depend on stringent channel isolation to protect internal bus communications from field-side voltage transients. The SDV144-S63/PRP provides 1500 VAC withstand isolation between field input circuits and the internal backplane logic. Combining this isolation with optional Signal Conditioner Block (SCB) modules enables open and short circuit line diagnostics, preventing localized field wiring faults from propagating to adjacent channels or triggering system-wide trips.
Q: What function does the /PRP option code serve on the SDV144-S63 module?
A: The /PRP option designates mechanical prevention pins that prevent false insertion of incorrect I/O module types into the rack slot during maintenance.
Q: Can pressure clamp terminal blocks be attached directly to the SDV144-S66 or SDV144-S63 base module?
A: No, when the -S6 model suffix is selected, the module features a signal cable interface adapter and cannot accept direct pressure clamp terminal block options.
Q: Does the SDV144 support dual-redundant operation during active control execution?
A: Yes, the unit supports dual-redundant hardware configurations and online hot-swapping to ensure continuous signal processing without interrupting process safety loops.
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