ABB SPA-ZC22 Connection module
The SPACOM devices, e.g. the relays and the annunciator units are connected to the fibreoptical SPA bus by means of bus connection modules. The bus connection module SPAZC22 converts the optical signals of the SPA bus to RS 485, SPA (+5 V) or RS 232 signals and vice versa. The bus connection module is provided…







