Eltek Valere UNV-F 2.5 Manual de usuario descargar pdf (Pagina 66)

DC Controller

UPC4 Master

User Manual

Page 66/100

"LVD":

Selection source V1 (default battery voltage) as well

as event “LVD active” is assigned to the LVD

relay (e.g. K1).

The LVD contactor (energized by relay) switches off a

s soon as the battery voltage drops below the

limit „Low limit OFF“ (20.1) and additionally "Drop delay" (20.5) has been elapsed.

Reactivation of the contactor takes place if „Low limit ON“ (20.2) has be

en exceeded.

"PLD":

The PLD contactor (energized by relay) switches off as soon as the battery voltage drops below the

limit „Low lim

it OFF“ (20.6) and additionally "Drop delay" (20.7) has been elapsed.

Reactivation of the contactor takes place if „Low limit ON“ (20.

9) and the set "Connect delay"(20.10)

as well has been exceeded.

PLD2 has the same setting options as PLD1.

ATTENTION!

Because the battery voltage directly increases after power load

disconnection, the switch-on voltage "Low limit ON" (20.2) should be set to a

value great enough to avoid direct activation of the contactors.



Drop diodes in UPS systems are used to

protect the consumer load against

overvoltage, e.g. during boost charge.

First of all the voltage reference (21.1)

(1=Vbatt; 2=Vtapp; 3=Vload) and

following the ON (21.2) and OFF (21.3)

threshold is set for drop diode 1 as well as

for drop diode 2 if applicable.

21.1

21.2

21.3

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Eltek Valere UNV-F 2.5 Manual de usuario Pagina 66