INNIS21 Overview

The ABB INNIS21 Communication Interface is a Network Interface Module that serves as the intelligent front-end for Cnet communication within Symphony systems. It allows nodes to communicate with each other and is a direct upgrade from the INNIS11, requiring the INNPM22 module to function.

Environmental Strength

• Standard Industrial Design: Built as a printed circuit board for industrial control chassis mounting.

• Electrical Isolation: Incorporates isolation circuitry via its termination unit (NTCL01) for network connections.

• Fault Tolerance: Features self-isolation capability from the network in case of internal component failure.

• Robust Communication: Interfaces using shielded coaxial or twinaxial cables for noise immunity in plant environments.

FAQ

Q1: What is the primary function of the ABB INNIS21 module?

A1: It serves as the intelligent Network Interface Module, enabling node-to-node communication within the Symphony system's Cnet.

Q2: Which power supply does the INNIS21 module connect to via its P1 connector?

A2: It connects to the common and +5 VDC power source through the P1 connector.

Q3: What is the purpose of the P2 connector on the INNIS21?

A3: The P2 connector links the module to the I/O expander bus for communication with its paired INNPM22 module.

Q4: How does the INNIS21 module connect to the Cnet communication network?

A4: It connects via an NKLS01/11 cable from its P3 connector to an NTCL01 termination unit, which then interfaces with the coaxial or twinaxial Cnet.

Q5: Can the INNIS21 module work with an older INNIS11 module?

A5: No, the INNIS21 is a direct replacement for the INNIS11, but it can only be used in combination with an INNPM22 module, not with the older INNIS11.