ABB 3ADT220090R0013 SDCS-IOB-22

The digital I/O board IOB-2 substitutes the standard digital inputs and standard digital outputs on the SDCS-CON-4. This means the digital I/O on the SDCS-CON-4 is no longer available.

• Connectors X1 and X3 are used to connect the SDCS-IOB-2 with the SDCS-CON-4 via flat cable.

-Depending on the site of resistors R1 to R8, the digital inputs can take different voltages. Three different voltage levels are available:

  o The SDCS-IOB-21 is suitable for voltages up to 48 VDC.

  o The SDCS-IOB-22 is suitable for voltages up to 115 VAC.

  o The SDCS-IOB-23 is suitable for voltages up to 230 VAC.

• Connectors X4 and X5 provide the digital outputs (DO1…DO8)

   digital outputs (DO1…DO8)  Relay contacts (DO1 - DO5 & DO8)

    Optocoupler contacts (DO6 & DO7)

• Active outputs will be displayed by LED

•Connector X6 provides the digital inputs

  All inputs are filtered and galvanically isolated by optocouplers

• Connector X7 provides a connection to the internal 48 VDC power supply

• On this slide, the connection diagram for the IOB-2 board will be explained.

• If a digital output is active, its LED lights up.

• Connector X6 provides the digital inputs. All digital inputs are filtered and galvanically isolated by means of optocouplers.

• Connector X7 provides a connection to the internal 48 VDC power supply with up to 50 mA of current. This power supply is not galvanically isolated from the DCS electronics and is only available on the SDCS-IOB21.

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