Gamatronic Electronic Industries Ltd.
22
CENTRIC User Guide, Release 0.3
internal clock.
For example, the bypass frequency is a nominal 50 Hz, and you have set the frequency
tracking range to be
±
2 Hz. In this case, as long as the bypass frequency remains with in
the range of 48–52 Hz, the inverter frequency will mirror it. When the bypass frequency
passes these boundaries, the inverter frequency ceases to be determined by the bypass
frequency and comes under the control of the UPS's internal clock (this is called "free-
running mode"). When the bypass frequency returns to the range of 48–52 Hz, free-
running mode ceases and the inverter frequency again comes under the control of the
bypass frequency.
6.1.1.2
Setup > System > NUMBER OF BATTERIES
Specify the number of battery strings connected to the UPS. You can specify 1, 2, or 3 battery
strings. The
Centric
requires you to enter a password to change this setting.
6.1.1.3
Setup > System > SYSTEM TYPE
Indicates the maximum output power of your system, and whether the UPS is operating in
standalone mode or in a parallel configuration.
6.1.1.4
Setup > System > SHUTDOWN and AUTORESTART
Use this option to specify the behavior of the UPS during a failure of the ac mains power.
•
You can set a specific limit to the duration of battery mode, after which time the UPS will
automatically turn itself off.
•
You can instruct the UPS to continue to supply backup power until the battery voltage
descends to the predefined level at which the UPS will turn itself off.
In this screen, you also specify if the UPS should automatically turn itself back on when the ac
mains power returns following a power failure, or if it should remain off.
6.1.1.5
Setup > System > CONTROLLER
•
Lets you change the scheduling of the automatic test of the controller battery.
(Note: this is not related to the test of the UPS’s main backup batteries.
•
This option also lets you test the LEDs on the remote control panel.
