Yokogawa SDV144-S33/PRP Digital Input Module
The Yokogawa SDV144-S33/PRP, also cataloged as the SDV144 Digital Input Module, operates as a dedicated hardware component for safety-instrumented binary signal acquisition within ProSafe-RS ProSafe-Controller platforms. It interfaces directly with field-side dry contacts, monitoring 16 discrete channels to execute continuous loop integrity checks and pass isolated logic states to the safety processing unit.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | SDV144-S33/PRP |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.44 kg (0.98 lbs) |
| Dimensions | 130 mm x 30 mm x 125 mm |
| Operating Temp | 0 to 50 deg C |
| Power Consumption | 24 VDC @ 300 mA max |
| Module Type | Digital Input Module (Safety Instrumented) |
| Number of Channels | 16-channel, isolated |
| Input Signal Type | No-voltage contact / dry contact |
| Signal Isolation | Channel-to-channel and channel-to-system galvanic isolation |
| System Compatibility | ProSafe-RS Safety System |
Channel-to-Channel Isolation and SIL3 Safety Execution
Designed for application within SIL3-rated safety loops, the SDV144-S33/PRP incorporates robust galvanic channel-to-channel isolation to prevent field ground faults or surge propagation from compromising adjacent input circuits. The internal diagnostic architecture continuously monitors loop current levels to detect open-circuit or short-circuit conditions on dry contact lines. In conjunction with downstream transmitter logic and 4-20 mA HART loop protocol monitoring modules across the safety network, the input circuitry executes high-frequency diagnostic sweeps to maintain fail-safe operational integrity without interrupting active safety logic.
Frequently Asked Questions
Q: Can the SDV144-S33/PRP module be inserted into an active ProSafe-RS safety node under power?
A: Online insertion (hot-swapping) is supported in redundant safety node configurations provided the field wiring connector terminal block is properly isolated and ESD grounding protocols are observed during removal and replacement.
Q: What type of field wiring interface is required for the SDV144-S33/PRP?
A: The module utilizes dedicated Yokogawa-specific signal cables (*2) or dedicated pressure-clamp terminal blocks designed to maintain channel-to-channel isolation standards.
Field Installation Guidelines
- Confirm that the target safety node rack slot matches the configured slot assignment in the ProSafe-RS system software before physical module insertion.
- Align the SDV144-S33/PRP circuit card with the upper and lower guide channels of the safety node subrack.
- Push the module firmly until the backplane connector fully locks into place, then secure the top and bottom retaining screws to 0.5 Nm.
- Attach the dedicated Yokogawa field cable connector or terminal block to the front interface, ensuring side locking clips engage securely.
- Connect field cable shield ground wires to the system cabinet functional earth (FE) bus bar using short, low-impedance copper conductors to ensure proper noise immunity.
Yokogawa SDV144-S33/PRP Digital Input Module
Yokogawa SDV144-S33/PRP Digital Input Module
The Yokogawa SDV144-S33/PRP, also cataloged as the SDV144 Digital Input Module, operates as a dedicated hardware component for safety-instrumented binary signal acquisition within ProSafe-RS ProSafe-Controller platforms. It interfaces directly with field-side dry contacts, monitoring 16 discrete channels to execute continuous loop integrity checks and pass isolated logic states to the safety processing unit.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | SDV144-S33/PRP |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.44 kg (0.98 lbs) |
| Dimensions | 130 mm x 30 mm x 125 mm |
| Operating Temp | 0 to 50 deg C |
| Power Consumption | 24 VDC @ 300 mA max |
| Module Type | Digital Input Module (Safety Instrumented) |
| Number of Channels | 16-channel, isolated |
| Input Signal Type | No-voltage contact / dry contact |
| Signal Isolation | Channel-to-channel and channel-to-system galvanic isolation |
| System Compatibility | ProSafe-RS Safety System |
Channel-to-Channel Isolation and SIL3 Safety Execution
Designed for application within SIL3-rated safety loops, the SDV144-S33/PRP incorporates robust galvanic channel-to-channel isolation to prevent field ground faults or surge propagation from compromising adjacent input circuits. The internal diagnostic architecture continuously monitors loop current levels to detect open-circuit or short-circuit conditions on dry contact lines. In conjunction with downstream transmitter logic and 4-20 mA HART loop protocol monitoring modules across the safety network, the input circuitry executes high-frequency diagnostic sweeps to maintain fail-safe operational integrity without interrupting active safety logic.
Frequently Asked Questions
Q: Can the SDV144-S33/PRP module be inserted into an active ProSafe-RS safety node under power?
A: Online insertion (hot-swapping) is supported in redundant safety node configurations provided the field wiring connector terminal block is properly isolated and ESD grounding protocols are observed during removal and replacement.
Q: What type of field wiring interface is required for the SDV144-S33/PRP?
A: The module utilizes dedicated Yokogawa-specific signal cables (*2) or dedicated pressure-clamp terminal blocks designed to maintain channel-to-channel isolation standards.
Field Installation Guidelines
- Confirm that the target safety node rack slot matches the configured slot assignment in the ProSafe-RS system software before physical module insertion.
- Align the SDV144-S33/PRP circuit card with the upper and lower guide channels of the safety node subrack.
- Push the module firmly until the backplane connector fully locks into place, then secure the top and bottom retaining screws to 0.5 Nm.
- Attach the dedicated Yokogawa field cable connector or terminal block to the front interface, ensuring side locking clips engage securely.
- Connect field cable shield ground wires to the system cabinet functional earth (FE) bus bar using short, low-impedance copper conductors to ensure proper noise immunity.
