Communication Interface - AEG CompuMaster 300 Operating Manual

4.7 Communication interface

(Connection of PC' s and signalling device)
The interface of the CompuMaster is designed for use in addition
to the shut-down options of AEG.
Interface (SUB-D-plug g-pole)
Relais contacts will be si,mulated via RS232interface by using
transistor technologie. For explanation of pin configuration see
the following table:
pin function
1 unused
2 output
3 unused
common 1
5 output
6
input
7
common 2
8
unused
unused
9
Operational voltage max. 15V DC (5OmA), inductionfree.
This signal is needed at pin 6 for approx. 2s to switch off the UPS
mains fault (pins 2-4 closed)
common for pins 2 and 5
battery undervoltage (pins 5-4 closed)
UPS off (+5V DC)
common for pin 6
mode