Power Supply User Manual

19
4.3 Connections, Operating and Display Elements
Front
Rear
1 Main switch of the UPS
(mains switch)
2 LED displays:
Green LED: Mains/normal operation
Yellow LED: Battery operation
Red LED: Warning/fault,
battery renewal indication
1 Load connections with
overvoltage protection and
UPS backup
2 Mains connection (UPS input)
with input fuse and integrated
back-up fuse
3 Data interface for modem/ fax/
phone (RJ11)
4 RS232 communication interface
(SUB-D 9-pin socket)
5 USB connection
6 Load connection with direct mains
supply (with overvoltage protection) –
without UPS back-up!