ABB CMA 121 DC Power Supply Module Invensys This board is responsible for

This board is responsible for providing control and processing functions for the drives

Housing Style: Separate head and control box

Function: Terminals for earth leakage fault detection

2 Rear Serial Ports: RS-422/485

ABB CMA 121 DC Power Supply Module Invensys This board is responsible forOverview The ABB CMA 121 is a communication module designed for use within ABBs control systems, particularly in process automation applications. It allows for reliable and efficient communication between different components of the control system, ensuring smooth data exchange and system integration. The CMA 121 is typically used in distributed control systems (DCS) to provide enhanced communication capabilities. Specifications: Dimensions: 2. 0" x