VIPA SSM-BG41 - 3.1 General; 3.1.1 Voltage supply 5 V and 24 V

Manual BG41/BG42/BG43 Interface modules
Rev. 99/49 3-1
3 Interface modules
3.1 General
The modular communication processor SSM is an intelligent carrier module, upon which a series of
input, output and communication modules can be equipped.
Depending on the module, up to 3 interface modules can be optionally combined.
The communication processor SSM is suitable for:
•= Communication with automation equipment and computers
•= Connection with keyboards, terminals or printers
•= Time and clock acquisition
•= Recording the time standard of PTB-Braunschweig
•= Recording and output of analogue process quantities.
3.1.1 Voltage supply 5V and 24V
The 5V, which are supplied by the back plane bus, are generally sufficient for the power supply of
the modules used.
The 20mA current loop module and/or the 20mA current loop combination module require a
voltage supply of 24 V if they are actively used in a 20mA current loop with internal power supply.
The SSI module’s encoder can also be supplied with 24 V. Guidelines on voltage supply can be
found in chapter 5.