Yokogawa SNT521-53 S1 Optical ESB Bus Repeater Slave Module

Overview

The Yokogawa SNT521-53 S1 Optical ESB Bus Repeater Slave Module is specifically engineered for the ProSafe-RS Safety System, facilitating long-distance optical communication over multimode fiber. This module supports reliable, redundant network configurations in industrial safety applications, enabling effective communication between control nodes.

Key Functions

• Signal Conversion and Transmission: Converts ESB bus signals to optical signals, enabling extended communication distance in the ProSafe-RS system.
• Reliability in Harsh Environments: Built for demanding operational conditions, ensuring stable performance across wide temperature ranges and high-humidity environments.

Installation Environment Specifications

The SNT521-53 S1 conforms to strict environmental and operational standards, suitable for deployment in diverse industrial settings. Below is a summary of its operating tolerances based on the Safety Node Unit and Optical Bus Repeater Module specifications.

Temperature and Humidity

• Operating Temperature: -20°C to 70°C, supporting wide-ranging environments.
• Storage/Transport Temperature: -40°C to 85°C, allowing safe handling during transport and storage.
• Humidity: 5 to 95% RH (non-condensing) in both operational and storage conditions.

Power Supply

• Voltage Range:
  • AC: 100-120 V ±10%, 220-240 V ±10%
  • DC: 24 V ±20% for extended configurations
• Frequency: 50/60 Hz ±3Hz
• Momentary Power Failure: Tolerates interruptions of up to 20 ms.
• Distortion Factor: Ensures a maximum of 10% distortion for reliable power quality.

Vibration and Shock Resistance

The module is tested for various types of vibrations and shocks, ensuring durability and stability:

• Continuous Vibration:
  • Amplitude: 1.75 mm, acceleration of 4.9 m/s² for frequencies up to 150 Hz.
• Non-Continuous Vibration:
  • Amplitude: 3.5 mm, with an acceleration of 9.8 m/s² for frequencies up to 150 Hz.
• Seismic Resistance: Capable of withstanding acceleration of 4.9 m/s² in seismic events.

Noise and Static Electricity

• Electric Field Resistance: Tolerates up to 10 V/m within a frequency range of 80 MHz to 1 GHz.
• Static Electricity Protection: Designed to handle 4 kV (direct discharge) and 8 kV (aerial discharge).

Altitude

• Operating Altitude: Suitable for up to 2000 meters, with an extension to 3000 meters in special configurations.

Installation Guidelines

The SNT521-53 S1 is recommended for installation in environments with a controlled concentration of dust (maximum 0.3 mg/m³) and is resistant to corrosive gases in compliance with ANSI/ISA S71.04 G3 standards. Proper grounding, insulation, and impact resistance are also required as specified.

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