Issue 5
1
947272
VP-4124/VP-4124-E
24/48 VOLT DC SWITCHING POWER SUPPLY
INTRODUCTION
These instructions provide the specifications,
installation and maintenance information for the
VP-4124 and VP-4124-E, 24/48 Volt Power Supplies.
FCC INFORMATION
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
•
This device may not cause harmful interference.
•
This device must accept any interference received,
including interference that may cause undesired
operation.
NOTE: This equipment has been tested and
found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide
reasonable protection against harmful
interference in a residential installation. This
equipment generates, uses and can radiate radio
frequency energy and if not installed and used in
accordance with the instructions, may cause
harmful interference to radio communications.
However, there is no guarantee that interference
will not occur in a particular installation. If this
equipment does cause harmful interference to
radio or television reception, which can be
determined by turning the equipment off and on,
the user is encouraged to try to correct the
interference by one or more of the following
measures:
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the
equipment and receiver.
•
Connect the equipment into an outlet on a
circuit different from that to which the
receiver is connected.
•
Consult the dealer or an experienced
radio/TV technician for help.
SPECIFICATIONS
The VP-4124 and VP-4124-E are fully regulated 24VDC,
4 Amp Power Supplies. The primary is protected by a 3
Amp slo-blo fuse and the 2 Amp outputs by
auto-resetting fuses. The outputs are floating
with respect to ground. The regulator will maintain 24
Volts
+/
-
2% over the rated range of input voltages
and output loads. A greater than 4 Amp load on
power up will cause the power supply to current limit.
Short circuit protection is provided. Overvoltage is
provided to limit the output voltage to approximately
28 Volts should a failure occur within the power
supply. Outputs may be used in a series for 48V @
2A.
Applications
The VP-4124/VP-4124-E are designed to be used with
•
All Valcom page control units
•
Valcom one-way amplified speaker assemblies
•
Any application where 24VDC filtered talk battery
is required
Design Features
•
VP-4124: 115VAC, 60Hz input
•
VP-4124-E: 230VAC, 50Hz input (preset at the
factory for the specific unit)
•
Hold Up Time: 350ms Power Line Ride Through
•
(2) LPS outputs (24VDC @ 2A each)
•
Can be used as a 24 Volt or 48 Volt power source
