Connect external components
Fire brigade call station (AT) PT2002-A1
7
102 | 121
A6V11940317_en--_a
7.4.3 Connect DC 24 V power supply
The DC 24 V power supply connection is used to supply the PT2002-A1 with
power. Connect the 24 V to the 'AB-CN1' on the adapter board.
DC 24 V power connector - 'AB-CN1'
Pin
Description
Remark
1
DC 24 V
-
2
DC 0 V
-
Table 82: DC 24 V power connector - 'AB-CN1' on PT2002-A1 adapter board
The DC 0 V is galvanically isolated from the device earth, analog audio and all
digital interfaces. The galvanic isolation prevents earth loops and earth bypass.
The 24 V can be supplied from a cabinet or an external power supply 'Merawex
ZSP135 DR-7A-3 40 Ah' PP2004-A1 with a separate cable.
Internal power supply DC 24 V of PT2001 mother board
The DC 24 V power supply connection 'AB-CN2' is used to supply the PT2001-A1
mother board with power. This connection is pre-installed.
DC 24 V power connector - 'AB-CN2'
Pin
Description
Remark
1
DC 0 V
Connected to pin 1 of the mother board
2
DC 24 V
Connected to pin 2 of the mother board
Table 83: DC 24 V power connector - 'AB-CN2' on PT2002-A1 adapter board
7.4.3.1 Power supply from a cabinet
Fig. 57: PT2002-A1 power supply from a cabinet
PT2002
DC/DC
PCA2011
PCA2018
Ground Fault
PCA2001
Fuse
PT2001
(PT2002)
Fuse
DC 24 V
DC 24 V
DC 24 V
Cabinet
1
1
1
2
1
3
1
4
1
5
1
7
1
2
1
5
1
7
Fuse
DC 24 V
1
5
1
7
Other
devices