Installation Instructions

Connect external components
Desk call station PT2001-A1
7
A6V11899867_en--_a
91 | 122
7.1.3 Connect DC 24 V power supply
The DC 24 V power supply connection is used to supply the PT2001-A1 with
power.
DC 24 V power connector - 'CN2'
Pin
Description
Remark
1
DC 0 V
2
DC 24 V
Table 70: PT2001-A1 DC 24 V power connector - 'CN2'
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 bypasses.
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.
7.1.3.1 Power supply from a cabinet
Fig. 51: PT2001-A1 power supply from a cabinet
1
Cerberus PACE Compact cabinet
2
External 'Desk call station (19 buttons)' PT2001-A1 with accessories
3
DC/DC converter '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
7
DC 24 V wiring to 'Desk call station (19 buttons)' PT2001-A1 or other devices
A ground fault monitor PCA2001-A1 must be used when the PT2001-A1 is
powered from a cabinet with a DC/ DC converter PCA2011-A1 or PCA2018-A1.
PT2001
(PT2002)
DC/DC
PCA2011
PCA2018
Ground Fault
PCA2001 Fuse
(PT2001)
PT2002
Fuse
DC 24 V DC 24 V
DC 24 V
Cabinet 11
12
13 14
1
5
1
7
1
2
1
5
1
7
Fuse
DC 24 V
1
5
1
7
Other
devices