STANDBY Mode
Switching to the STANDBY mode may only be effected from the BACK-UP
mode in case of the batteries becoming discharged or by overriding from an external
control system. The switching takes place after a time defined in the control software
expires.
The UPS unit remains in this mode if the mains does not supply voltage that meets
the correctness criteria for the electrical power network, and the UPS unit has been
switched on by the logic system. After voltage with correct parameters becomes
available, the UPS unit will switch automatically to the MAINS mode (through the
READY mode, after the batteries have reached the minimum charge level). Relay
switches with 15 seconds delay.
Switching off of the UPS unit by the logic system results in the UPS being switched to
the STOP mode or the READY mode.
MAINS Mode (NORMAL)
In order for the UPS power supply unit to be in the MAINS (NORMAL) mode, it
must be first switched on by the logic system (from the user interface). Moreover, the
voltage in the mains must the correctness criteria (correct voltage and current
values). The UPS unit supplies power to its outputs and charges the battery.
If the value of the mains is lower than the configured minimal output voltage
(CONFIGURATION; UPS; MinOutputVolt) or higher than the configured maximal
output voltage (CONFIGURATION; UPS; MaxOutputVolt), the UPS's output provides
filtered voltage whose value is raised or lowered by the AVR system or the unit goes
into BACK-UP mode.
BATTERY Mode (BATTERY-based operation)
If the voltage in the mains does not meet the correctness criteria, the UPS unit
will switch to the BACK-UP mode (battery operation). In BACK-UP mode, the inverter
unit supplies the energy collected in the batteries (after it has been transformed) to
the output. The duration of the time power is being supplied in this way depends on
the power accumulated in the batteries (specifically the number of batteries and
battery packs used).
To Next Page
Loading...
