Unit installation

14
Figure 1.13 SPCO Relay Output Configuration and Typical Application.
Telecoms Connections (Galaxy 16 plus only)
Connection to the PSTN
The Telecommunications Network Voltage (TNV) port (terminals A and B on
JP3) must be permanently connected (hard-wired) to the PSTN via a BT master
socket, refer to Figure 1.14 Connecting the Galaxy 16 plus to the PSTN.
Note: If the BT master socket is the newer type (NTE5), then the connection
can be carried out by the installation engineer. If the BT master socket is
not an NTE5, then the connection must be made by the network
operator.
Figure 1.14 Connecting the Galaxy 16 plus to the PSTN.
To BT Master
socket, Pins:
2
5
JP3
A B C D
To BT Secondary
socket, Pins:
(5) † 2
(2)
† 5
† Some Secondary Sockets may have mirror images of the correct PIN assignments
(Pin 1 is actually Pin 6). If this is the case, connect the Galaxy plus to the pins given in brackets.
123
Connecting to the PSTN
Single Pole
Change - 0ver
relay contacts
Normally
closed
Normally open
Horn
+12 V
0 V