Valcom Welding System vp 4024b User Manual

VSP-VP-4024B  
Issue 6  
VP-4024B  
-24 VOLT DC POWER SUPPLY  
INTRODUCTION  
These instructions provide the specifications,  
installation and maintenance information for the  
VP-4024B, -24 Volt Power Supply.  
SPECIFICATIONS  
The VP-4024B is a fully regulated -24 Vdc 4 amp  
power supply. The primary is protected by a circuit  
breaker and the two amp outputs by fuses. The  
output is floating with respect to ground, and the two  
outputs may be connected together for one 4 amp  
output. The regulator will maintain -24 volts "2V  
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 and the  
overload LED will light. Short circuit protection is  
provided. Over voltage is provided to limit the  
output voltage to approximately -28 volts should a  
failure occur within the power supply.  
Nominal Specifications  
Power Requirements  
Input Voltage: 105-120 Vac, 60 Hz, 150 watts max  
1.75 amps  
Dimensions:  
7.0"H x 9.5”W x 5.5"D  
(17.78cm H x 24.13cm W x 13.97cm D)  
12 lbs. (5.45 kg)  
Weight:  
Output Characteristics:  
-24 Vdc regulated "2V  
"A" battery  
Ripple 10 millivolts RMS max.  
Two 2 amp outputs  
Applications  
The VP-4024B is designed to be used with -  
INSTALLATION  
All Valcom page control units  
The VP-4024B is designed to be wall mounted within  
7 feet of an AC receptacle. A cold water pipe or  
earth ground should be connected to the local ground  
screw terminal using 12 AWG or larger ground wire.  
Valcom one-way amplified speaker assemblies  
Any application where -24 Vdc filtered talk  
battery is required  
Design Features  
Connections  
Regulated -24 volts DC "A" battery  
Two 2 amp fused outputs  
Outputs may be connected for one output total 4  
amps at 25 degrees C  
Connections to Valcom page control units are  
shown in Figure 1.  
When using the VP-4024B with Valcom page  
equipment, a strap may be added from the local  
ground terminal to either of the ground outputs.  
When installing Valcom one-way amplified  
horns, connect the white and black wires of the  
horn to the power supply -24V and ground  
terminals respectively.  
When installing Valcom one-way speakers  
connect the -24V and ground terminals of the  
speaker to the corresponding power terminals.  
Input circuit breaker protected  
LED indication of output overload  
Full current limiting  
Over voltage protection  
Floating output  
Full electronic supply  
1
947724  
 
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.  
2.  
3.  
inspection by Valcom, Inc. indicates the validity of the claim,  
the defect is not the result of damage, misuse, or negligence after the original shipment.  
the product has not been altered in any way or repaired by others and that factory sealed units are unopened (A service  
charge plus parts and labor will be applied to units defaced or physically damaged),  
freight charges for the return of products to Valcom are prepaid,  
all units ‘out of warranty’ are subject to a service charge. The service charge will cover minor repairs (Major repairs will be  
subject to additional charges for parts and labor).  
4.  
5.  
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:  
Valcom, Inc.  
In Canada  
CMX Corporation  
1111 Industry Avenue  
Roanoke, VA 24013  
Phone: (540) 427-3900  
FAX: (540) 427-3517  
35 Van Kirk Drive #11 and 12  
Brampton, Ontario L7A1A5  
Phone: (905) 456-1072  
FAX: (905) 456-2269  
VP-4024B  
POWER SUPPLY  
PAGE  
CONTROL  
UNIT  
-24V  
-24V  
GND  
GND  
LOC  
GND  
STRAP  
A GROUND  
A BATTERY  
B GROUND  
B BATTERY  
STRAP  
EARTH OR COLD  
WATER PIPE GROUND  
Alternate Ground Method: If using earth or cold  
water pipe ground, do not connect to LOC GND.  
FIGURE 1 - CONNECTIONS TO VALCOM PAGE CONTROL UNITS  
3
947724  
 

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