3 pins 5 & 6 - any-mode shutdown, 1 auto-enable output, 2 pin 6 logic – Liebert 230V User Manual

Page 24: Pins 5 & 6 - any-mode shutdown, Auto-enable output, Pin 6 logic, Warning

Communications

If the mains returns 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 perform-

ing the 2-minute shutdown delay.

8.3

Pins 5 & 6 - Any-Mode Shutdown

Pin 6 of the 9-pin communication connector is used for “Any-Mode

Shutdown” of the UPS output. This control input may be used in spe-

cial applications to disable the UPS output power—both Inverter and

Bypass.
The Options tab allows the behavior of the Any-Mode Shutdown fea-

ture to be modified. When the program opens, or the REFRESH but-

ton is pressed, the UPS setting is read by the configuration program

and displayed.

8.3.1 Auto-Enable Output

8.3.2 Pin 6 Logic

If version 1.6 (or later) is used with an earlier GXT 2U model (with an

earlier UPS firmware version), the Any-Mode Shutdown features can-

not be changed.
If the configuration program is used with an earlier UPS model (with

an earlier UPS firmware version) that does not support the modifica-

tion of these settings, the Options tab will display a reminder of the

factory default settings. These cannot be changed.

WARNING

Note that when this option is selected and the UPS output is

disabled using Pin 6, the UPS output can turn on

automatically and without warning if the Pin 6 connection is

changed.

WARNING

DO NOT CHANGE THIS OPTION from the factory default

setting unless you are ready to install a normally-closed

connection between Pins 5 & 6. This connection must be

maintained to use the UPS or to use the configuration

program again, including the ability to change the UPS

setting back to the default setting using the configuration

program via a serial communication link.