Liebert UPSTATION GXT 2U User Manual page 24

Pin 4 - Remote shutdown on Battery
1. This pin is only functional if the UPS is in battery mode. If the UPS is
being powered by the mains (PFC on), then pin 4 will ignore any sig-
nal on this pin.
2. Pin 4 requires a 5-12 VDC signal to shutdown. This normally comes
form the serial port using our contact closure cable. It cannot be used
with just a contact closure unless the relay is used to switch a voltage
source. A 5-12 VDC signal for 1.5 seconds or greater is required to
signal a shutdown. Signals for less than 1.5 seconds will be ignored.
After Pin 4 receives a shutdown signal for 1.5 seconds, the command
cannot be cancelled.
3. A battery shutdown signal on pin 4 will NOT cause an immediate
shutdown. A shutdown signal will start a 2-minute shutdown timer.
The timer cannot be stopped. After 2 minutes, the UPS will shutdown.
4. If the mains return during the 2-minute timer countdown, the shut-
down timer will continue until the end of 2 minutes and the UPS will
turn OFF. The UPS must remain OFF for at least 10 seconds even if
AC input power returns before the UPS turns OFF. This serves to
reset and restart the server.
Whether the UPS turns back ON when power is restored depends on the
auto-restart setting: enabled or disabled.
If the auto-restart is disabled, the UPS will not restart after performing the
2-minute shutdown delay.
UPS Intelligent Communcations
The UPStation GXT 2U UPS is equipped with an Intellislot™ bay to pro-
vide advanced communication and monitoring options.
Liebert's MultiLink™ software continually monitors the UPS and can shut
down your computer or server in the event of an extended power failure.
MultiLink can also be configured for use without the serial cable when the
Intellislot SNMP/Web card is installed in the UPS. Additionally, MultiLink
can be configured to coordinate shutdown across the network with other
computers running MultiLink when you purchase a MultiLink License Kit.
For more information about the Intellislot SNMP/Web Card and MultiLink
License Kits, please see www.liebert.com or contact your local dealer or
Liebert representative directly.
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