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SNT401-13

The Yokogawa SNT401-13 is an Optical ESB (Enhanced Serial Bus) Bus Repeater Master Module designed to extend the transmission distance of the ESB bus in safety control systems. It converts electrical ESB bus signals into optical signals, facilitating long-distance communication between safety control units, safety node units, and N-IO nodes.

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Key Specifications

Model: SNT401-13

Function: ESB Bus optical transport (Master Module)

Connection Methods: Supports both star and chain-type connections

Number of Connecting Stages: Up to two

Transmission Distance:

Maximum 5 km (total two stages)

Up to 10 km with Vnet/IP system R1.03 or later

Current Consumption: 0.5 A

Weight: Approximately 0.3 kg

Dimensions: 130 mm (W) × 32.8 mm (H) × 32.8 mm (D)

Mounting Style: Style CU1N (without terminator) or CU1T (with terminator)

System Requirements: Compatible with SENG R1.02 or later and SCS R1.02 or later

✅ Key Features

Signal Conversion: Converts electrical ESB bus signals into optical signals, enabling long-distance communication.

Flexible Connectivity: Supports both star and chain-type network topologies, offering flexibility in system design.

Extended Reach: Allows for significant extension of the ESB bus transmission distance, enhancing system scalability.

Compact Design: Features a lightweight and space-saving form factor suitable for industrial environments.