Yokogawa SDV144-S33/PRP S4 32-Ch Digital Input Module | Replacement, Equivalent & Selection Guide
The Yokogawa SDV144-S33/PRP S4 is a high-density 32-channel digital input (DI) module designed for the Yokogawa CENTUM VP and CS 3000 distributed control systems (DCS). It supports redundant power supply (PRP) configuration, ensuring maximum availability in critical process control environments such as oil & gas, petrochemical, and power generation plants.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | SDV144-S33/PRP S4 |
| Module Type | Digital Input (DI) Module |
| Number of Channels | 32 Channels |
| Input Signal | Dry contact / Wet contact (24 VDC) |
| Power Supply | Redundant Power (PRP) |
| Communication | V-net / ER Bus (CENTUM VP / CS 3000) |
| Isolation | Optical isolation per channel group |
| Operating Temperature | 0°C to 55°C |
| Humidity | 10% to 90% RH (non-condensing) |
| Mounting | DIN rail / Field Control Station (FCS) nest |
| Applicable System | CENTUM VP, CENTUM CS 3000 |
| Certification | CE, UL (system-level) |
| Country of Origin | Japan |
Compatible Replacement & Equivalent Models
If the SDV144-S33/PRP S4 is unavailable or end-of-life, the following models may serve as direct or functional replacements depending on your system revision and firmware version:
| Model | Type | Compatibility Notes |
|---|---|---|
| SDV144-S33 S4 | Direct equivalent (non-redundant PSU) | Same channel count; remove PRP suffix for single-power config |
| SDV144-S03 S4 | Functional equivalent | Earlier revision; verify firmware compatibility with FCS |
| SDV144-S53 S4 | Upgraded replacement | Enhanced diagnostics; backward compatible with CENTUM VP R6+ |
| ADV151-P50 S4 | Analog/Digital hybrid alternative | For mixed I/O applications; consult system engineer |
| SDV541-S33 S4 | Compact DI alternative | 16-channel; use two units to match 32-ch capacity |
Note: Always verify hardware revision (Sx suffix) and firmware version before substitution. Contact Konmask.com for cross-reference validation.
Why Choose the Original Model
- Guaranteed OEM Compatibility: Factory-tested to integrate seamlessly with Yokogawa CENTUM VP and CS 3000 FCS nests without configuration changes.
- Redundant Power (PRP): The /PRP suffix ensures uninterrupted operation even during power supply failure — critical for SIL-rated loops.
- 32-Channel Density: Maximizes I/O density per nest slot, reducing hardware footprint and wiring costs.
- Long-Term Support: Yokogawa provides extended lifecycle support for CENTUM VP modules, protecting your capital investment.
- Proven Field Reliability: Widely deployed in refinery, LNG, and power plant DCS architectures globally.
Typical Applications
- Oil & gas upstream/downstream process monitoring
- Petrochemical plant DCS digital status acquisition
- Power generation turbine and boiler control systems
- Water treatment and utilities automation
- Pharmaceutical batch process control
- Pulp & paper mill automation
System Compatibility
| DCS Platform | Compatible | Notes |
|---|---|---|
| Yokogawa CENTUM VP | ✅ Yes | All revisions R4.01 and above |
| Yokogawa CENTUM CS 3000 | ✅ Yes | R3.08 and above; verify nest type |
| Yokogawa CENTUM CS 1000 | ⚠️ Partial | Consult Yokogawa compatibility matrix |
| Yokogawa ProSafe-RS | ❌ No | Safety system uses dedicated SIL modules |
| Third-party DCS | ❌ No | Proprietary bus protocol; not interoperable |
Selection Guide
Use the following criteria to confirm the SDV144-S33/PRP S4 is the right module for your application:
- Channel Count: Do you need 32 DI channels per slot? → SDV144 series ✅
- Power Redundancy: Is your FCS configured with redundant power supply? → /PRP suffix required ✅
- Hardware Revision: Confirm your FCS nest accepts S4 hardware revision (check nest label or engineering drawings).
- Signal Type: Dry contact or 24 VDC wet contact inputs? → SDV144-S33 supports both ✅
- System Version: CENTUM VP R4.01+ or CS 3000 R3.08+? → Compatible ✅
If any criteria do not match, contact our technical team at support@konmask.com for a validated alternative recommendation.
Quality Assurance & Sourcing
- Source: Sourced from authorized distributors, certified system integrators, and verified surplus channels.
- Inspection: Each unit undergoes visual inspection, label verification, and functional pre-shipment check.
- Authenticity: We supply only genuine Yokogawa parts — no counterfeit or refurbished-as-new units.
- Warranty: 90-day replacement warranty against DOA (Dead on Arrival) defects.
- Documentation: Datasheet, test report, and certificate of conformance available upon request.
How to Order
- Confirm your part number: SDV144-S33/PRP S4
- Verify quantity and required delivery timeline.
- Submit your RFQ via the product page or email support@konmask.com.
- Receive quotation within 1 business day (stock items ship within 3–5 business days).
- Payment via T/T, PayPal, or credit card accepted.
Replacement & Compatibility FAQ
Q: Can I use SDV144-S33 S4 (without /PRP) as a direct replacement?
A: Yes, if your FCS uses a single power supply. The /PRP variant is required only for redundant PSU configurations. Swapping without /PRP in a redundant system will cause a hardware mismatch alarm.
Q: Is the SDV144-S33/PRP S4 compatible with CENTUM VP R6?
A: Yes. The S4 hardware revision is fully supported in CENTUM VP R4.01 through R6.xx. No firmware update is required for the module itself.
Q: What is the difference between SDV144-S33 and SDV144-S53?
A: The S53 variant offers enhanced channel diagnostics and improved EMC performance. It is backward compatible with CENTUM VP R6+ but may require an FCS firmware update on older revisions.
Q: Can this module be used in a ProSafe-RS safety system?
A: No. ProSafe-RS uses dedicated SIL-certified I/O modules with a separate safety bus. The SDV144 series is for standard process control only.
Q: Do you provide a test report or certificate of conformance?
A: Yes. Documentation is available upon request for all units shipped from Konmask.com.
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