ASR133-S00/SR3S0 | Yokogawa | ProSafe-RS Relay Output

Yokogawa ASR133-S00/SR3S0 Signal Relay Module ProSafe-RS PLC

Product Description

The ASR133-S00/SR3S0 (ASR133) is a high-integrity signal relay module engineered for Yokogawa’s ProSafe-RS safety instrumented systems and CENTUM VP control environments. This module provides 32 channels of electromechanical relay outputs, facilitating the safe isolation and switching of field signals for actuators, alarms, and interlock circuits. Unlike standard digital output modules, the ASR133-S00/SR3S0 (ASR133) utilizes physical relay contacts (Form A) to ensure total galvanic isolation between the system logic and high-power field devices.

Designed for mission-critical reliability, the ASR133-S00/SR3S0 (ASR133) supports dual-redundant configurations, ensuring that a single relay or module failure does not compromise the safety function. Each channel is equipped with independent diagnostic monitoring and surge protection, making it ideal for the stringent requirements of Emergency Shutdown (ESD) and Fire & Gas (F&G) systems. The module is G3 conformant, allowing for long-term deployment in corrosive industrial atmospheres typical of petrochemical and power generation facilities.

Detailed Technical Specifications

The hardware parameters for the ASR133-S00/SR3S0 (ASR133) are optimized for safety-critical signal routing:

• Manufacturer: Yokogawa

• Model Number: ASR133-S00/SR3S0

• Product Type: Signal Relay Module

• System Compatibility: ProSafe-RS, CENTUM VP/DCS

• Number of Channels: 32 Channels

• Relay Type: Electromechanical Relay, Form A (SPST - Normally Open)

• Rated Output Voltage: 24 V DC nominal (Max 125 V DC / 250 V AC depending on FTA)

• Rated Output Current: 2.0 A per channel

• Minimum Load: 10 mA at 5 V DC

• Isolation: Channel-to-channel and channel-to-system isolation (minimum 500 V AC)

• Response Time: ≤ 20 ms (Energize/De-energize)

• Dimensions: 3.8 cm x 12.7 cm x 15.2 cm (1.5" x 5.0" x 6.0")

• Net Weight: 0.5 kg (1.0 lbs)

• Operating Temperature: -10 °C to +55 °C

• Storage Temperature: -40 °C to +85 °C

• Certifications: CE, TÜV (SIL 3 compatible), UL, CSA, G3 (Corrosion Resistance)

• Country of Origin: Japan / Singapore