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947099
Table 2 - Valcom Power Supplies
Part #
Voltage
Maximum
Current
Valcom
Power
Units
VP-324D
-24VDC
300mA
+6
VP-624D
-24VDC
600mA
+12
VP-1124D
-24VDC
1.0 amp
+20
VP-2124D
-24VDC
2.0 amp
+40
VP-4124D
-24VDC
4.0 amp
+80
VP-6124
-24VDC
6.0 amp
+120
VP-12124
-24VDC
12.0 amp
+240
There are several cases when more than one
power supply will be required:
When the power required exceeds the
maximum output of the power supplies
available: Add additional supplies as
required.
In large systems or systems with many one-
way horn speakers: Locate separate power
supplies near groups of speakers. Refer to
the Valcom Wire Gauge Guide for guidelines
concerning maximum allowable distances
for power runs.
When the paging system is in several
buildings, or on several floors of a single
building: Locate a power supply in each
building, or on each floor, that contains
equipment requiring power.
Environment
Control Units:
Temperature:
0 to +40°C
Humidity:
0-85% non-condensing
Inside Speakers:
Temperature:
-20 to +55°C
Humidity:
0-95% non-condensing
Horn Speakers:
Temperature:
-20 to +55°C
Humidity:
0-95% non-condensing
E-Key, PABX, or Dedicated Single
Line Telephone Set
Additional
Zones
(multi-zone
units only)
Talkback Speakers
Power Supply
(if required)
One or more dedicated
single line telephone(s)
Block Diagram for Loop Start Trunk Port And/Or Single Line
Telephone Access of a Valcom Talkback Page Control/Interface
Audio To Up To 40
VALCOM One-Way
Self Amplified
VALCOM
Talkback
Page
Control/Interface
T
R
Telephone
System C.O.
Loop Start
Trunk Port
-AND/OR-
FIGURE 2
To provide handsfree answerback paging on
1A2, E-Key, or PABX Systems, you will need a
talkback control, talkback speakers, and (if
required) a power supply.
The speakers may be anyone of Valcom's 45
Ohm Talkback Speakers. In most cases, if the
control unit requires a power supply, the
VP-624B will be adequate. Larger power
supplies may be required if one-way speakers or
horns are utilized.
Access will be from a C.O. line key on E-Key
Systems, from a loop start trunk port on PABXs,
or from Tip and Ring on one or more dedicated
single line sets. A trunk circuit will be required
on a PABX or E-Key system.
Page Port Access
In general, telephone system page ports are not
capable of passing audio in both directions and,
therefore, are suitable for one-way paging only.
In the case of bi-directional page ports, contact
Technical Support for assistance in choosing the
appropriate talkback page control/interface.
Station Level Paging
Station level access to talkback paging systems
may be accomplished
in certain instances
by
utilizing the Valcom V-9940 Station Level Page
Adapter. Due to
the nature of talkback paging with station level
access from various C.O. lines or PABX/PBX
stations, it is advisable to contact Technical
Support prior to configuring your system.
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