Mounting Instructions

Install internal components
Digital audio matrix PC2003-A1
6
54 | 173
A6V10430579_en--_b
6.3.4 Connect 'PACE-Bus' (RS485)
The digital audio matrix PC2003-A1 provides one 'PACE-Bus' (RS485) connector
('RS485/RS232') at the rear of the housing. This connector can be used to connect
the 'PACE-Bus' (RS485) input and output expansion modules and the 'PACE-Bus'
(RS485) call stations.
Fig. 28: PC2003-A1 'PACE-Bus' (RS485) connector
'PACE-Bus' (RS485) connector - 'RS485/RS232'
Pin
Description
Remark
1
D-
RS485 data D-
2
D+
RS485 data D+
3
RX
Not used together with RS485
4
TX
Not used together with RS485
5
GND
GND reference voltage
6
10 V
10 V reference voltage
Table 15: 'PACE-Bus' (RS485) connector - 'RS485/RS232'
The connector is only used to connect the internal 'PACE-Bus' (RS485)
components in the cabinet.
If the 'PACE-Bus' (RS485) will be also used to connect the external 'PACE-Bus'
(RS485) components, then use them together with these components:
● The RS485 isolator: 'ICPDAS I-7510 (RS485, isolated)' PNA2009-A1
● The 'MeanWell SD-50B-24 DC/DC Converter (50W)' PCA2011-A1 or the
'MeanWell SD-100B-24 DC/DC Converter (100W)' PCA2018-A1
● The 'Ground fault monitoring (24V)' PCA2001-A1
It ensures that a short on the external wiring does not influence the internal
function of the cabinet.
1
RS485/RS232