Overview
Configured for ESB bus connection in Yokogawa control systems, the Yokogawa S9342FA (S9342FA Connector Unit for ESB Bus) provides direct physical and electrical execution for bus interconnection. The unit operates with a 5 V DC bus voltage and supports a current rating of 1-2 A. It also maintains specified contact resistance, insulation resistance, and dielectric strength for controlled industrial installation conditions.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | S9342FA |
| Brand | Yokogawa |
| Product Type | Connector Unit for ESB Bus |
| Origin | Japan |
| Place of Shipment | Xiamen, China |
| Weight | 0.05 kg |
| Dimensions | 3.2 x 2.5 x 11.1 cm |
| Operating Temp | -10 deg C to +60 deg C |
| Storage Temp | -20 deg C to +70 deg C |
| Humidity | 10-90% RH, non-condensing |
| Bus Voltage | 5 V DC |
| Current Rating | 1-2 A |
| Power Consumption | Not specified |
| Contact Resistance | Less than 20 mOhm |
| Insulation Resistance | Greater than 100 MOhm at 500 V DC |
| Dielectric Strength | 1000 V AC for 1 minute |
| Tariff Code | 8537101190 |
Process Control and DCS Connectivity
The S9342FA is intended for physical ESB bus connection within Yokogawa control system hardware. Its electrical characteristics focus on maintaining a defined connection path for the 5 V DC bus supply and associated bus interfaces.
Unlike field instrumentation interfaces designed for 4-20 mA HART loops, FOUNDATION Fieldbus, or Profibus PA networks, this connector unit performs a hardware-level ESB bus connection function. Therefore, installation should maintain clean connector contact surfaces and controlled wiring practices to prevent unnecessary contact resistance or electrical interference.
The specified insulation resistance of greater than 100 MOhm at 500 V DC and dielectric strength of 1000 V AC for 1 minute define the insulation performance limits provided for the unit.
Frequently Asked Questions
Q: What is the primary function of the Yokogawa S9342FA?
A: The S9342FA functions as a connector unit for the ESB bus. It provides the physical and electrical connection interface required by the specified bus configuration.
Q: What bus voltage and current rating does the S9342FA support?
A: The unit operates with a 5 V DC bus voltage and has a specified current rating of 1-2 A.
Q: What environmental conditions apply to the S9342FA?
A: The specified operating temperature is -10 deg C to +60 deg C. Storage temperature is -20 deg C to +70 deg C, with 10-90% RH non-condensing humidity.
Field Installation Guidelines
- Disconnect or isolate the applicable system power before installing or removing the connector unit.
- Confirm that the mating ESB bus interface and connector orientation match the hardware configuration before insertion.
- Keep connector contacts clean and free from oil, dust, oxidation, or conductive contamination.
- Do not force the connector into the mating interface, as mechanical stress may damage contacts or connector alignment features.
- Verify that the connected bus circuit operates within the specified 5 V DC voltage range and applicable current loading.
- Route adjacent wiring to minimize mechanical stress and unnecessary electrical interference around the ESB bus connection.
- Maintain the specified operating temperature and non-condensing humidity conditions during system operation.
- Inspect the connector seating and physical retention after installation and before energizing the associated control system.
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