YOKOGAWA SDV144-S33 16-Channel Isolated Digital Input Module (ProSafe-RS Safety System)

SDV144-S33 is a safety-grade digital input module designed exclusively for Yokogawa ProSafe-RS Safety Instrumented System (SIS). 

It processes 16 channels of dry contact (no-voltage) signals from field safety devices, providing high isolation and reliable 

signal acquisition for critical process safety applications.

Detail Description

This module serves as a critical interface between field safety instruments (e.g., emergency stop buttons, limit switches, safety interlocks) 

and the ProSafe-RS safety controller. It features 16 galvanically isolated input channels and supports dual redundancy 

for maximum system availability. Engineered to meet strict safety standards, it ensures accurate and fail-safe detection 

of ON/OFF states in demanding industrial environments. Key attributes include ISA G3 environmental compliance, fast 

response time, and robust signal isolation to prevent cross-talk and ground loops.

4. Technical Specifications

Part Number: SDV144-S33

Type: Digital Input Module (Safety SIS)

System: Yokogawa ProSafe-RS

Channels: 16 isolated inputs

Input Signal: Dry contact (no-voltage)

Input Current: 6 mA ±20% (24 V DC)

Contact Rating: 24 V DC ±10%, ≥10 mA

Isolation: 2 kV AC (input to system)

Response Time: ≤ 40 ms

Power Supply:

Internal: 5 V DC (290 mA max)

External Field: 24 V DC (140 mA max)

Operating Temp: -20°C to +70°C (ISA G3)

Weight: Approx. 0.36 kg (standard) / 0.41 kg (with cable adapter)

Connection: Pressure clamp terminal / MIL cable

Redundancy: Dual-redundant capable

Certifications: Suitable for Safety Instrumented Systems (SIS)

Condition: New / Refurbished