Installation Instructions

Install internal components
Call station interface (RS485) PTO2008-A1
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6.3 Call station interface (RS485) PTO2008-A1
The 'PACE-Bus' module 'Call station interface (RS485)' PTO2008-A1 provides a
convenient connection to the call stations PT1002-A1, PT2003-A1 and PT2009-A1.
It routes all signals to a copper Ethernet cable (CAT5) to connect the call stations
and further PTO2008-A1.
It provides a fuse to secure the 24 V in the cabinet in case of a short circuit outside
of the cabinet.
6.3.1 Mounting
The 'PACE-Bus' module 'Call station interface (RS485)' PTO2008-A1 is designed
to be mounted on a DIN rail in the cabinet.
6.3.2 Installation
Fig. 41: PTO2008-A1 connector overview
The PTO2008-A1 protects the 24 V inside the cabinet with a fuse F1 with a rating
of 500 mA.
The call stations are connected to 'X5' with single wires or to 'RJ1' with copper
Ethernet cable (CAT5). The signals 'RS485', 'Audio In', 'Audio Out' and the fused
'24V' are routed to 'X5' and 'RJ1'.
A previous PTO2008-A1 is connected via 'RJ2', and the next PTO2008-A1 is
connected via 'RJ3'. The signals 'RS485', 'Audio In', 'Audio Out' and '24V' are
routed to 'RJ2' and 'RJ3'.
6.3.3 Connect DC 24 V power supply
The PTO2008-A1 provides one DC 24 V power supply connector ('X1')
DC 24 V power supply connector - 'X1'
Pin
Description
Remark
1
DC 24 V
-
2
DC 0 V
-
Table 40: PTO2008-A1 DC 24 V power supply connector - 'X1'