ABOUT THE AVPSU4 POWER SUPPLY & INTERFACE UNIT
All AV102SS intercom unit built after March 2000 are supplied with an AVPSU4 unit.
Below is a description of the indicators and connections, and their functions:-
Refer to the parts identification drawing
POWER OUTPUT TERMINALS (1)
These terminals provide a 24 Volt DC power output to power the call-point. Please read
the installation instructions earlier in this document with regard to cable type and
maximum permissible distance. If required, the call-point may be powered locally, in which
case these terminals should be left disconnected.
POWER INDICATOR LED (2)
This LED illuminates when the unit has 24 Volts DC power applied.
CALL OUTPUT (3)
The call output (alarm out) is a clean contact output (not an open-collector, as on previous
units), and this output is switchable between normally open and normally closed, by
means of a switch on the rear of the unit. The maximum contact load permissible is
100mA @ 30 Volts DC.
CONNECTOR FOR CABLING FROM INTERCOM CALL-POINT (4)
The cable used between the call-point should be installed
exactly
as described earlier in
this document
and using only the cable types specified
.
CONNECT INDICATOR LED (5)
This LED indicator illuminates only when the AVPSU4 is connected to a “powered-up”
ADPRO FastScan series transmitter (not FastVu or FastTrace).
CALL OUT INDICATOR LED (6)
This LED indicator illuminates when the call input is open-circuit. This LED changes state
in sympathy with the call input and may be used to identify when the push button is being
pressed.
If this LED is permanently in one state, this indicates a probable fault as follows:-
1/ The
unit(s)
has
not been wired correctly.
2/
The AV102SS is not powered-up
3/
The call input connector is not plugged in correctly
4/
The cable between the AV102 and the AVPSU4 is open-circuit
5/
The push-button may be faulty (or stuck)
I/O PORT (7)
This 15-pin “D” type connector provides a connection point to the ADPRO range of remote
transmitters (FastScan, FastVu and FastTrace). Connection may be made with a standard
15-pin ribbon cable fitted with sockets (females) at both ends. A suitable 1.5 metre ribbon
cable is supplied with each AV102SS intercom system.
AUXILIARY AUDIO IN PHONO (RCA) SOCKET
This connector provides an audio input socket
from
3
rd
party equipment
AUXILIARY AUDIO OUT PHONO (RCA) SOCKET
This connector provides an audio output socket
to
3
rd
party equipment
DOCUMENT NUMBER AV102SS/OEM/01 REVISION 6.1 1st August 2006 Page
17
of 22
