Position the remaining screws and fasten through the
remaining mounting slots. Tighten screws.
Connections
NOTE: The V-2904 could be used with equal
success at a doorway, gateway, window, secure
room or combination of these just to name a few
possible applications. The term station is used to
designate a location. Station 1 is used when
describing connections; all other stations would be
connected similarly. Refer to Figure 2 for pinouts
of the specific station location.
Mount a 66B-type punchdown block on the
backboard near the V-2904 Universal Four Door
Answering System and label the block per Figure 2.
Move slide switch SW2 on the V-2904 to the
appropriate location, Loop or Ground Start, (see
Figure 3) depending on how the V-2904 is accessed.
If a modular cord is used for Tip and Ring
connections, start at step ONE. For 66 block
connections start at step TWO.
___ 1. Connect one end of the modular cord to the
V-2904 RJ11 and the other end to the
appropriate line position of the phone
system. Go to step 3.
___ 2. Connect Tip of the key system line position,
loop or ground start trunk, to Pin 26 (W/BL)
and Ring to Pin 1 (BL/W).
___ 3. Connect Tip of Zone 1 45 Ohms talkback
speaker to pin 32 (R/O) and Ring to pin 7
(O/R).
___ 4. If using a door button with the Zone 1
talkback speaker, connect normally open,
single pole push button switch to Door
Button 1 connection pin 33 (R/G) and pin 9
(BR/R) Ground. (Figure 5 depicts a typical
speaker/door button hookup).
___ 5. Move slide switch SW1 (located on the
V-2904 board) to the ON position if the
telephone system is to ring when the door
button is pressed. (Refer to Figure 3 for
location).
___ 6. Connect the -24VDC power supply. -
24VDC should be connected to pin 25 (S/V)
and Ground connected to pin 50 (V/S). The
power LED located on the V-2904 board
should illuminate.
Battery Backup
A Valcom VPB-260 Battery Backup may be added to
the system to provide power in case of power failure.
The VPB-260 plugs directly into the V-2904. Figure
4 shows the appropriate connection. The VPB-260
should be allowed to charge for approximately 9
hours before operating the V-2904.
The Valcom
VPB-260 battery backup may be used as the sole
supply of power to the V-2904.
Remote Door Unlock Relay
Figure 6 shows the V-2904 contact arrangement
available for electric strike plate operation.
Before connecting an electric lock to the V-2904,
consult the manufacturer instructions for the proper
connecting arrangement.
Remote Push Button
for Manual Door Release
A momentary, normally open, single-pole,
single-throw switch can be connected to the system.
Suggested pinouts to the 66B-type block are shown in
Figure 7. Again, refer to manufacturer instructions
for proper connections.
The remote button should be
placed in an inconspicuous location to provide a more
secure system.
NOTE: If the remote button does not respond,
you have most likely entered a confirmation press.
Additional presses will result in an alarm
condition.
Handsfree Indicator ("Station
Outputs")
The V-2904 supplies connections to allow handsfree
indicators to be connected to the system. No
indication is available during All Call. During
handsfree communication, with station 1, pin 6 goes
to -24VDC when connected as shown in Figure 8
.
Maximum current available is 50mA.
Other station
outputs react in a similar manner.
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