Unique Broadband Systems Ltd. DRU2KW User Manual
Page 10
X75 SERIES - Mk3 Controller
INSTALLATION & OPERATING MANUAL
Manual No. x75mk3-11
x75-man-Rev11-0815.indd
7.0 PRINCIPAL OF OPERATION
L
N
L
N
L
N
BATTERY
5 x LOAD
BREAKERS
10 x LOAD
FUSES
RETURN
RECTIFIER
#1
RECTIFIER
#2
RECTIFIER
#3
REMOTE ACCESS
CONTROLLER
I²C
LVD
ALARMS
&
SENSORS
NETWORK
COMMUNICATIONS
BATTERY
CURRENT
SHUNT
RECTIFIER
CURRENT
SHUNT
CONFIG.
A
CONFIG.
B
Figure 2 - Block Schematic
7.1
85-264VAC is supplied directly to each of the rectifiers which produce a nominal
-48VDC, +24VDC or +12VDC output.
7.2
Following a current shunt to measure the rectifier current, the rectifier DC output
is fed to the battery terminals via the LVD (Low Voltage Disconnect, current shunt
and a 100A circuit breaker.
7.3
The rectifier DC output is also fed to the loads via up to 5 circuit breakers
(configuration A) or 10 fused circuits (configuration B).
7.4
The management unit monitors and controls the rectifiers via an I²C interface and
also checks the status of the DC load and battery breakers/fuses.
7.5
The management unit monitors external sensors and provides alarms.