Product Core Brief

• Model: SDV144-S13
• Brand: Yokogawa
• Series: ProSafe-RS / SDV Safety Digital I/O Module
• Core Function: 16-channel safety digital input module for Yokogawa safety controller racks.
• Product Type: Safety Digital Input Module
• Key Specs: 16 channels | 24V DC / no-voltage contact input | module isolation | safety-rated DI
• Condition: New Original / New Surplus

Key Technical Specifications

• Manufacturer: Yokogawa
• Part Number:
• Module Type: Safety Digital Input Module
• System Family: ProSafe-RS / Yokogawa SDV safety I/O series
• Input Channels: 16 independent channels
• Input Type: 24V DC / no-voltage contact digital input; exact input definition should be confirmed against the installed rack and suffix code
• Isolation: Module isolation
• Mounting: Yokogawa safety I/O rack / backplane-mounted
• Typical Applications: ESD systems, fire and gas systems, permissive interlocks, emergency shutdown inputs, safety trip signals, SIL-rated digital input loops

Product Introduction

The SDV144-S13 is a Yokogawa safety digital input module used in ProSafe-RS and related Yokogawa safety I/O racks. It provides 16 channels of safety-rated digital input, typically for monitoring field contacts, switch positions, permissive signals, and other discrete safety inputs that must be processed within a safety instrumented function.

Its main advantage is direct replacement in existing Yokogawa safety racks without reworking field wiring or rack configuration. For maintenance, commissioning, and procurement teams, this is a straightforward OEM spare that supports existing cause-and-effect matrices, loop folders, and plant acceptance testing.

QA & Testing SOP

Safety I/O modules require stricter verification than general-purpose cards because they sit inside safety instrumented functions.

• Label and authenticity check: Verify part number SDV144-S13, serial number, manufacturing markings, and revision suffix against OEM references.
• Visual inspection: Check front connector, backplane connector, housing, LEDs, and PCB for heat damage, corrosion, moisture ingress, or rework.
• Rack power-up test: Install in a compatible Yokogawa safety rack and verify normal module initialization with no fault LEDs.
• Channel verification: Apply 24V DC or dry-contact signals per channel and confirm correct input status reporting to the safety controller.
• Isolation check: Confirm module isolation behavior and absence of cross-channel interference during bench testing.
• ESD-safe packing: Ship in anti-static packaging with connector protection, plus label and LED photos for receiving QA.

Installation Pitfalls & Guide

❗ Confirm the exact input type before installation. The SDV144 family includes variants for no-voltage contact and 24V DC inputs; the S13 suffix must be matched to the existing field wiring and system configuration.

❗ Do not substitute with a general-purpose DI module. SDV144 modules are safety-rated I/O. Replacing them with non-safety cards can invalidate safety loop design and acceptance records.

❗ Do not hot-swap without procedure. Removing or inserting a safety I/O module can disturb the safety rack bus and cause an unintended trip. Follow plant MOC and safety system procedures.

❗ Verify revision suffix compatibility. Units such as S1, S2, and S4 may indicate manufacturing revisions. Confirm with system documentation before substituting a different revision.

Replacement steps:

1. Pre-install: Confirm rack type, slot position, suffix code, field wiring type, and ESD precautions.
2. Isolate loop: Follow safety system procedures and place affected SIF loops in a safe state if required.
3. Replace module: Remove the faulty unit, install the SDV144-S13, and verify seating and connector engagement.
4. Commission: Restore power, check module LEDs, verify channel status, confirm controller diagnostics, and document the replacement.

Technical FAQ

Is pricing flexible? Yes. Price depends on condition, stock availability, revision suffix, test records, and whether the unit is new original or new surplus. Urgent shutdown replacements can be prioritized.

What warranty is included? Surplus safety I/O modules usually carry a limited functional warranty, often 30–90 days, unless otherwise agreed. Final terms depend on stock source and customer QA requirements.

Can SDV144-S13 replace other SDV144 variants? Not automatically. The SDV144 family has multiple suffixes for different input types and configurations. The S13 variant must be confirmed against the existing rack, field wiring, and safety loop documentation.

Is this a safety-rated module? Yes. The SDV144 series is described as a Yokogawa safety digital I/O module for safety controller racks.

Do you provide test records? We can provide label photos, bench power-up notes, channel status checks, and packing records. Full rack-level testing or FAT-style reports can be arranged if required.