The ABB NBIO-31 is a Basic I/O Unit 3 for the Advant AC800 drive controller. It is a modular unit that can be used to add additional I/O capabilities to the drive controller. The NBIO-31 is available in two versions: the NBIO-31C and the NBIO-31CU.

The NBIO-31C is a basic I/O unit that provides 16 digital inputs, 16 digital outputs, and 4 analog inputs. The NBIO-31CU is an upgraded version of the NBIO-31C that provides additional features, such as support for PROFIBUS DP communication and a real-time clock. Both versions of the NBIO-31 can be used with a variety of Advant AC800 drive controllers.

The NBIO-31 is a versatile I/O unit that can be used for a variety of applications. It is commonly used in industrial automation applications, such as controlling motors, pumps, and valves. It can also be used in building automation applications, such as controlling lighting and HVAC systems.

Here are some of the key features of the ABB NBIO-31:

• 16 digital inputs and 16 digital outputs
• 4 analog inputs (NBIO-31CU only)
• Support for PROFIBUS DP communication (NBIO-31CU only)
• Real-time clock (NBIO-31CU only)
• Compact design
• Easy to install and configure

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