SDV531-S33/PRP | Yokogawa | ProSafe-RS Safety Output Module

Yokogawa SDV531-S33/PRP S2 Digital Output Module 24VDC 8-Channel

Product Description

The SDV531-S33 (SDV531-S33/PRP S2) is a high-performance digital output module designed for Yokogawa’s ProSafe-RS Safety Instrumented System (SIS) and S2 series architectures. This module provides 8 channels of isolated 24 VDC outputs, specifically engineered to drive safety-critical field devices with higher current requirements, such as heavy-duty solenoid valves, motor starters, and large relays.

As part of the ProSafe-RS family, the SDV531-S33 (SDV531-S33/PRP S2) is built to meet SIL 3 safety integrity requirements. It features a "current source" output format with extensive internal diagnostics that monitor the health of the output circuit and field-side wiring. The module supports PRP (Parallel Redundancy Protocol) for high-availability communication, ensuring that the safety controller maintains deterministic command control even in the event of a network path failure. Its robust design is tailored for the extreme environmental demands of the oil and gas, petrochemical, and power generation industries.

Detailed Technical Specifications

The SDV531-S33 (SDV531-S33/PRP S2) hardware parameters are defined for mission-critical reliability:

• Manufacturer: Yokogawa

• Model Number: SDV531-S33

• Suffix Code: /PRP S2

• Product Type: Digital Output Module (High-Current Type)

• System Compatibility: ProSafe-RS, S2 series I/O system

• Number of Channels: 8 channels, module isolation

• Output Voltage: 24 V DC (nominal)

• Output Voltage Drop: ≤ 1.0 V DC (when active)

• Maximum Load Current: 0.6 A per channel (total module limit: 5.5 A)

• External Power Supply: 24 V DC (+20% / –10%), minimum 5 A source required

• Leakage Current (OFF): ≤ 1.6 mA

• Isolation Resistance: 10 MΩ minimum (at 500 V DC)

• Safety Integrity: SIL 3 Capable

• Update Rate: Fast response for process safety time (PST) requirements

• Dimensions: 130 × 107.5 × 32.8 mm

• Weight: 0.28 kg (Unit); Shipping weight 1.5 kg

• Certifications: TÜV, CE, UL, CSA, ISA G3 compliant

• Origin: Japan