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Description：

The ABB DSTD196 3BSE004725R1 Connection Unit is an interface module for the ABB S100 I/O system, providing reliable field wiring connections for 24 V DC digital input signals. It serves as the connection point between field devices and compatible ABB digital input modules, ensuring stable signal transmission to the control system.

The DSTD196 supports eight independent digital input channels, each equipped with screw terminals for straightforward installation and maintenance. It is suitable for connecting a wide range of field devices, including push buttons, limit switches, relay contacts, proximity sensors, and other 24 V DC digital signal sources.

Operating with a 24 V DC supply and a -24 V bias configuration, the DSTD196 uses an offset-bias input circuit that enables accurate signal recognition by the associated ABB digital input board. In addition, each input channel is optically isolated from the others and from the system potential, helping minimize electrical interference and improving the reliability and safety of signal acquisition in industrial environments.

Specification：

Frequently asked questions

1. What is the ABB DSTD196 3BSE004725R1 used for?

It provides field wiring connections for 24 V DC digital input signals in ABB S100 I/O systems.

2. How many input channels does the DSTD196 support?

The unit supports 8 digital input channels.

3. What types of field devices can be connected?

It can connect switches, push buttons, relay contacts, proximity sensors, and other 24 V DC digital signal devices.

4. What input voltage does the DSTD196 use?

It is intended for 24 V DC digital input applications with a -24 V bias configuration.

5. Are the input channels electrically isolated?

Yes. Each input channel is opto-isolated from the others and from the system potential to improve signal reliability and reduce electrical interference.

Product Applications

Power Energy: Power plant boiler control, auxiliary equipment data acquisition and integration.

Metallurgy & Steel: Production line process control, heavy machinery transmission.

Petrochemicals: Monitoring of continuous production processes, loop signal relay and control.