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14
en | Installing the Surveillance cabinet
3.4
Routing power through intermediate unit
You can route the main power supply through an intermediate unit (type PA1 or PA2) before
connecting the power to a PA0 type unit. This chapter describes how to make the connections
for this configuration. You must change the connectors, because the 5-pin power out
connector from the PA1 or PA2 unit does not match to the 3-pin power input of the PA0 power
supply. The illustration below shows:
–
–
–
Connections of the power wires in the NDA-U-PA1 / NDA-U PA2 unit
1
2
3
4
2017.09 | v1.0 | F.01U.250.239
A type PA1 or PA2 unit.
The main power supply connected to the P101 connector and to the grounding screw.
The 24 VAC power out wire connected to the P107 heater power connectors.
P101
LINE NC NEUT
1 2 3
P106
GND TXD RXD
6 5 4 3 2 1
120/230 VAC Power in
Ground wire
P101 connector
P107 connector
J102
(LED)
P105
C+ C-
GND
TXD RXD
C+
C-
6 5 4 3 2 1
5
Transformer
6
In/out conduit 15 mm (1/2 inch) NPS fitting
7
24 VAC power out
Installation manual
Surveillance Cabinet
Bosch Security Systems
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