14
2. Use a nonmetal object such as a toothpick to move DIP switch 4 from one side to
the other; if the UPS is on, it will beep. Make sure you do not accidentally change
the position of another DIP switch.
5D. Remote Shutdown
You can set up a remote UPS shutdown using contacts at the UPS’ communication port.
Your remote shutdown switch must have contacts that short UPS pin 7 to pin 4 (com-
mon). This connection shuts down the UPS’ output power to the protected equipment.
When this happens, the UPS sounds alarm “Sd” for “shutdown” (Morse code alarm H).
When you are ready to restart the UPS, the shutdown switch must remove the connec-
tion to pin 7 on the UPS port. Then, you can restart the UPS by pressing the key.
You can change the type of Remote Shutdown signal that the UPS responds to and how
quickly it responds. Call
Best Power’s Worldwide Service
6. Alarms
Sometimes Fortress detects a problem and warns you about it by sounding an alarm.
When this happens, the UPS lights the red (Alarm) light, flashes a two-letter alarm
message on the display, and sounds a Morse code alarm.
6A. Silencing Alarms
To silence an alarm, press the bottom (arrow) key
on the front panel. The Morse-code alarm will stop,
and the display will show “Sh” for a short time.
The red alarm light will stop blinking, but it will
stay on unless you have solved the problem that
caused the alarm. The display will still show the
alarm message. Remember: Silencing the alarm
does not solve the problem that caused it. Go on
to find out how to react to the alarm.
E
N
G
L
I
S
H
RS232
Mode
Extended
Signal Mode
DIP Switches
4
3
2
1
Press this
key to
silence
alarms.
OL
