Installation Instructions

Connect external components
Fire brigade call station (AT) PT2002-A1
7
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A6V11899867_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