Product Description
Product Details
| Manufacturer |
YOKOGAWA |
| Model/Part Number |
SNT401-53/CU1N |
| Model Type |
Optical ESB Bus Repeater Master Module |
General Overview
The SNT401 Optical ESB Bus Repeater Master Module is used to extend the ESB bus communication system in safety control units. It connects the ESB Bus Coupler Module (SEC401, SEC402) on the safety control unit or the ESB Bus Interface Module (SSB401) on the safety node unit (SNB10D) through an ESB bus cable. The module can function in both star and chain-type connections, with the ability to extend communication over long distances.
Standard Specifications
| Parameter |
Value |
| Function |
ESB Bus optical transport function |
| Connection Method |
- Star type connection |
|
- Chain type connection |
| Number of Connecting Stages |
Maximum of two stages |
| Transmission Distance |
- Maximum 5 km (total two stages) |
|
- With Vnet/IP system (R1.03 or later), max distance is 10 km |
| Current Consumption |
0.5 A |
| Weight |
Approx. 0.3 kg |
Model and Suffix Codes
| Description |
Suffix Code |
| Explosion Protection |
- –5: No explosion protection |
|
- –E: With explosion protection |
| Temperature Standard and Range |
- 3: ISA Standard G3, temperature (-20 to 70°C), maintenance purpose only |
|
- F: ISA Standard G3, temperature (-20 to 70°C), for specific configurations (SNT501-F and S2EN501-1) |
Option Codes
| Option Description |
Option Code |
| Connector Unit for ESB Bus |
/CU1N (Part number: S9345FA) |
| Connector Unit with Terminator for ESB Bus |
/CU1T (Part number: S9346FA) |
Key Features
-
Transport Function: Optical communication for the ESB bus.
-
Connection Flexibility: Allows both star and chain type connections for flexibility in system design.
-
Extended Communication: The module can extend communication over up to 10 km with the right Vnet/IP system.
-
Explosion Protection: Available with or without explosion protection, suitable for hazardous environments.
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