Valcom vp-2048c Service Manual

VSP-VP-2048C

Issue 2

VP-2048C

48 VOLT DC POWER SUPPLY

IDENTIFICATION

The VP-2048C is a fully regulated 48VDC 2 Amp
power supply ("A" Battery). The input is fuse
protected and the output is floating with respect to
ground. The regulator will maintain 48 +/- 3 Volts
over the entire input voltage range. Upon power up, a
load greater than 2 Amps will shut the power supply
off. Short circuit protection is also provided. The
VP-2048C can be used with Valcom V-1038 paging
horn or any application where 48VDC filtered ("A")
battery is required. The VP-2048C is CSA, UL and
CE listed.

NOMINAL SPECIFICATIONS

Input: 105 to 120VAC, 60Hz, 150 Watts
Output: 48VDC +/-3V "A" Battery
(ripple 10mV maximum) 2 Amps @ 25°C

Environment

Temperature: 0 to +50°C
Humidity: 0 to 85% (non-precipitating)
Dimensions: 10.70"H x 6.35"W x 3.70"D
(27.18cm H x 16.13cm W x 9.40cm D)
Weight: 12 lbs. (5.44 kg)

INSTALLATION

The VP-2048C is designed to be wall-mounted within

4.50 feet of an AC receptacle.

___ 1. Using 12 AWG or larger ground wire,

connect the local ground screw terminal to a
cold water pipe or earth ground.

___ 2. Connect device requiring power to screw

terminal labeled -48V, 2A and to the screw
terminal labeled GND.

___ 3. Connect a strap between the local ground

and ground output terminals when using the
VP-2048C with Valcom equipment.

1 947746

TECHNICAL ASSISTANCE

When trouble is reported, verify there are no broken
connections. Troubleshooting assistance is available
from the factory. Call [phone] for Technical
Support or [phone] for Valcom 24-hour
Faxback System or visit our website at
http://www.valcom.com.

Valcom equipment is not field repairable. Valcom,
Inc. maintains service facilities in Roanoke, VA.
Should repairs be necessary, attach a tag to the unit
clearly stating 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 be

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);

subject to additional charges for parts and labor).

2