Planning

Planning call stations
Network call station PT2001, PT2002
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When PT2001-A1 is used as a 'Non-alarm' call station, the power can be supplied
via a standard plug-in power supply DC 24 V on site.
8.1.2.2 Power supply redundant PT2001-A1 and PT2002-A1
Fig. 13: PT2001-A1 and PT2002-A1 redundant power supply
1
Cerberus PACE Compact cabinet
2
External Desk call station (19 buttons) PT2001-A1 with accessories or Fire
brigade call station (AT) PT2002-A1
3
MeanWell SD-50B-24 DC/DC PCA2011-A1 or MeanWell SD-100B-24 DC/DC
PCA2018-A1
4
Ground fault monitoring (24V) PCA2001-A1
5
Fuse 1 A
6
Call station interface (redundant) PTO2009-A1
7
24 V wiring to Desk call station (19 buttons) PT2001-A1 or Fire brigade call
station (AT) PT2002-A1
PCA2011-A1 and PCA2018-A1 (3) provide isolated DC 24 V. A short circuit
outside of the cabinet has no impact on the whole cabinet.
The PCA2001-A1 (4) detects a ground fault on the 24 V wiring to PT2001-A1 and
PT2002-A1.
Each 24 V wiring (7) to PT2001-A1 and PT2002-A1 is installed with a 1 A fuse (5).
It ensures that a short circuit on one 24 V wiring has no impact on the other.
The PTO2009-A1 monitors the 24 V wiring to PT2001-A1 and PT2002-A1 and
reports a fault. If one 24 V wiring fails, then PTO2009-A1 switches to the other.
Alternative power supply for PT2001-A1, PT2002-A1, and media converter
PN2007-A1 and repeater PNA2007-A1 via the PP2004-A1 power supply, approved
in accordance with EN 54-4.
When PT2001-A1 is used as a 'Non-alarm' call station, the power can be supplied
via a standard plug-in power supply DC 24 V on site.
PT2001
(PT2002)
DC/DC
PCA2011
PCA2018
Ground Fault
PCA2001
Fuse
(PT2001)
PT2002
DC 24 V
DC 24 V
DC 24 V
Fuse
DC 24 V
Interf.
Redund.
PTO2009
Interf.
Redund.
PTO2009
DC 24 V
Fuse
Fuse
Cabinet
11
1
2
1
3
1
4
15
1
6
17
1
2
15
1
5
15
16
1
7
17
17