Unique Broadband Systems Ltd. DRU2KW Benutzerhandbuch

Manual No. x75mk3-11

x75-man-Rev11-0815.indd

The LVD tab is the set up and control for the system low voltage disconnect 

contactors.  The controller can control up to two contactors, but in X75 only LVD 

1 is installed.

The controls are as follows:

LVD 1 will open at.  This is the system voltage which will cause the controller 

open LVD 1.  Typically this is used to disconnect batteries at the end of discharge 

to avoid damaging them.
LVD 1 will close at.  This is the system voltage above which the controller will 

close LVD 1.
Enable battery over temperature LVD1 latch off checkbox.  If this box is checked 

then LVD1 will latch off if a battery over temperature alarm condition occurs (set 

up is in the alarm matrix applet).  LVD1 will remain off even if the temperature falls 

below the alarm off level.  This helps to prevent battery thermal runaway.
LVD1 Control.  Select from Auto , On, Off.  This will normally be set to Auto to 

allow the controller to control the LVD using the On and Off voltage thresholds.  

Selecting On will permanently turn on the LVD.  Selecting Off will permanently 

turn off the LVD.  Note that the On setting is overridden by the over temperature 

latch off function.
Reset LVD Latch off.  This button can be used to reset a system that has latched off 

the LVD in the event of an over temperature condition.  An administrator password 

is required for this function.  Be sure that it is safe to carry out this function before 

doing so.

13.3.6 - Analog I/P - the X75 has no analog input connections.