SNT501-53 Yokogawa Optical ESB Bus Repeater Slave Module

Suffix Breakdown & Model Matrix

Hardware Specifications

Optical ESB Bus Communication and Transmission Characteristics

The SNT501-53 transfers ESB Bus communication through optical connections. Consequently, the module supports physical network extensions without relying exclusively on electrical bus connections.

Its supported network configurations include:

• Star-type configuration: Connects optical bus segments through a star network arrangement.
• Chain-type configuration: Connects repeater stages sequentially along an optical communication path.
• Two-stage transmission: Supports a maximum of two connecting stages.
• Extended transmission distance: Provides a standard maximum distance of 5 km for two stages. Furthermore, Vnet/IP System R1.03 or later supports a total distance of up to 10 km for two stages.

The module operates with a specified current consumption of 0.5 A. Its installation requires a compatible optical bus repeater unit and corresponding master or slave modules.

Frequently Asked Questions (FAQ)

Q: What network configurations does the Yokogawa SNT501-53 support?

A: The module supports both star-type and chain-type optical ESB Bus configurations, with a maximum of two connecting stages.

Q: What is the maximum transmission distance of the SNT501-53?

A: The standard maximum distance is 5 km for two stages. However, Vnet/IP System R1.03 or later supports up to 10 km total distance for two stages.

Q: What are the electrical and environmental characteristics of the SNT501-53?

A: The module has a current consumption of 0.5 A and supports an operating temperature range of -20 deg C to 70 deg C. It also complies with ISA Standard G3 corrosion resistance requirements and has no explosion protection.

Field Installation Guidelines

1. Mounting: Install the SNT501-53 in a compatible optical bus repeater unit, such as the SNT10D rack. Confirm mechanical compatibility with the designated module position.

2. Module Configuration: Install the corresponding master or slave modules according to the system configuration.

3. Optical Connections: Connect the fiber-optic interfaces according to the selected star-type or chain-type topology. Maintain proper fiber routing and protect optical connectors from contamination or mechanical damage.

4. Transmission Distance: Verify the total optical communication distance and connecting stages. Apply the 10 km limit only when the system uses Vnet/IP System R1.03 or later.

5. Power Requirements: Confirm that the installation supports the module’s specified 0.5 A current consumption.

6. Environmental Conditions: Maintain the module within its specified operating temperature range of -20 deg C to 70 deg C. Consider the ISA G3 corrosion-resistance classification when evaluating the installation environment.

7. Commissioning: Inspect module seating, optical connections, and bus configuration before energizing the system. Verify communication status through the applicable system diagnostics.