Description Of Operation; Figure 2. Block Diagram - Infinite Transtector DCPDU2B Series Installation Manual

6.0

DESCRIPTION OF OPERATION

6.1 Power Distribution Circuits. A simplified schematic diagram of the distribution
panels is shown in Figure 2. The battery input to each load connects to a high-current
copper bus bar from which the individual fuses or circuit breakers distribute power to
the loads. The return input connects to a similar bus bar to which the individual loads
terminate. The A and B loads are totally independent and isolated with the exception
of models incorporating the 'S' option.
6.2 Alarm Circuits. The alarm circuits detect a tripped circuit breaker and, in this event,
turn on the red part of the LEDs. The alarm circuits also each drive Form C relay
contacts. If one or more circuits open or if there is an input power failure, the relays
are de-energized and the contacts are used to control external audible or visual alarms.
The A and B alarm circuits are also independent and isolated from each other.
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A SIDE
HI-CURRENT BUS BAR
BATT.
INPUT
1 2 3...
LOADS
RET.
HI-CURRENT BUS BAR
A SIDE
ALARM
CIRCUITS

Figure 2. Block Diagram

LED & RELAY STATE MEANINGS
LED State Relay State
Green Energized (N.O. is closed)
Red
De-energized
(N.O. is open)
OFF
B SIDE
HI-CURRENT BUS BAR
-S OPTION
CIRCUIT
BREAKERS
N 1 2 3... N
LOADS
-S OPTION
HI-CURRENT BUS BAR
B SIDE
ALARM
CIRCUITS
Meaning
OK
Breaker Trip
No Input Power
BATT.
INPUT
RET.
7