Valcom vp-324 Service Manual

VSP-VP-324

Issue 7

VP-324

24 VOLT DC POWER SUPPLY

INTRODUCTION

These instructions provide identification, installation,
connection and operation information for the VP-324,
24 Volt DC Power Supply.

IDENTIFICATION

System Design

The VP-324 is a non-regulated "unfiltered Signal
Battery" which provides 24VDC, 0.25 Amp power
supply. The output is floating with respect to ground.
Short circuit protection is provided.

Applications

• Valcom one-way amplified speaker assemblies

• Any application where 24VDC unfiltered signal

battery is required

Features

• Non-regulated 24VDC "B" battery

• Thermal overload protection

• Floating output

• Short circuit protected

• Provides six Valcom power units

Capacity

• Current 0.25 Amp at 25° C

Dimensions/Weight

• 3.00" H x 2.50" W x 2.00" D
(7.62cm H x 6.35cm W x 5.08cm D)

•

0.8 lbs. (.36 kg)

Specifications

• Output: 24VDC +/- 3V "B" battery

Power Requirements

• Input 105-120VAC, 60Hz, 18 Watts

Environment

• Temperature: 0 to +50° C

• Humidity: 0 to 85% non-precipitating

INSTALLATION

The VP-324 is a receptacle mount power supply
designed to be used with a third wire grounded
receptacle. A cold water pipe or earth ground should
be connected to the local ground screw terminal using
14AWG ground wire. If a two wire adapter is used,
make sure the ground tab is bonded to the local
electrical ground.

When the VP-324 is being used with Valcom page
control equipment, connect a strap between the local
ground and the "+" terminal of the power supply.

When installing Valcom one-way amplified horns,
connect the white and black wires of the horn to the
power supply "-" and "+" terminals respectively.

When installing Valcom one-way amplified speakers,
connect the -24V and ground terminals of the speaker
to the power supply "-" and "+" respectively.

1 947324

TO PAGE
CONTROL

VP-324 POWER SUPPLY

TECHNICAL ASSISTANCE

When trouble is reported, verify that AC power is
being supplied to the unit.

To test the power supply, remove all output

AC

GND +

TIP

RING

-24VDC
GND

ONE-WAY
AMPLIFIED
SPEAKERS

connections and measure the output voltage with a
meter. The voltage should be 24VDC +/- 3V. If no
voltage is measured, replace the unit.

Assistance in troubleshooting is available from the
factory. When calling, you should have a VOM and
a test set available; call from the job site. Call (540)
563-2000 and ask for Technical Support, or call (540)
767-1555 for Valcom 24-hour Faxback System or
visit our website at http://www.valcom.com.

Connections to One-Way Amplified Speakers

Valcom equipment is not field repairable. Valcom,

Note: The VP-324 power supply is normally
used for powering amplified speakers

Inc. maintains service facilities in Roanoke, VA.
Should repairs be necessary, attach a tag to the unit
clearly stating your company name, address, phone
number, contact person and the nature of the problem.
Send the unit to:

Valcom, Inc.

Repair and Return Dept.

5614 Hollins Road

Roanoke, VA 24019-5056

VALCOM LIMITED WARRANTY

Valcom, Inc. warrants its products to be free from defects in materials and workmanship under conditions of normal use and service
for a period of one year from the date of shipment. The obligation under this warranty shall be limited to the replacement, repair or
refund of any such defective device within the warranty period, provided that:

1. inspection by Valcom, Inc. indicates the validity of the claim;

2. the defect is not the result of damage, misuse or negligence after the original shipment;

3. the product has not been altered in any way or repaired by others and that factory sealed units are unopened (a service

4. freight charges for the return of products to Valcom are prepaid;

5. all units ‘out of warranty’ are subject to a service charge. The service charge will cover minor repairs (major repairs will

This warranty is in lieu of and excludes all other warranties, expressed or implied, and in no event shall Valcom, Inc. be
liable for any anticipated profits, consequential damages, loss of time or other losses incurred by the buyer in connection
with the purchase, operation or use of the product.

This warranty specifically excludes damage incurred in shipment. In the event a product is received in damaged condition, the
carrier should be notified immediately. Claims for such damage should be filed with the carrier involved in accordance with the
F.O.B. point.

Headquarters: In Canada
Valcom, Inc. CMX Corporation
5614 Hollins Road 35 Van Kirk Drive #11 and 12
Roanoke, VA 24019-5056 Brampton, Ontario L7A 1A5
Phone: [phone] Phone: [phone]
FAX: [phone] FAX: [phone]

charge plus parts and labor will be applied to units defaced or physically damaged);

be subject to additional charges for parts and labor).

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