Pelco C654M-E (12/08) 3 manual Description, Models, Application Examples

Description

The WCS Series consists of multi-output 24 VAC outdoor power supplies. These power supplies provide output for one to four cameras (depending on the dome or pan and tilt) from a single source and come in 20-A capacities. To compensate for voltage losses over long wire runs, 28 VAC outputs are also available. The power supplies allow for 120 or 240 VAC line input. These high-capacity models can handle pan and tilt and receiver operation in addition to the camera, for integrated systems such as Spectra® and Esprit®.

WCS Series models are available with either glass fuses or self-resetting circuit breakers (poly switches). The following bullets explain the advantages and disadvantages of each type:

•Glass fuses provide more protection than circuit breakers because they act faster and are more precise. However, they are designed for one-time use and must be replaced when they blow.

•Circuit breakers reset themselves when the fault is corrected, which eliminates the need to replace fuses. However, they react more slowly, are affected by temperature, and are not as accurate. The amount of current required to trip one can vary as much as 100 percent.

Since circuit breaker models do not require fuses and automatically reset themselves after the fault is corrected, the breakers are not accessible.

MODELS

Model Number

Outputs

Supply Current (Amps)

Max Current Per Channel (Amps)

Input Voltage (VAC)

Output Voltage (VAC)

Fuses

Circuit Breakers

Surge Protection

Class 2 Output

On/Off Switch

Power LED

WCS4-20

WCS4-20B

4

4

20

12

8

3

120/240

120/240

24, 28

24, 28

X

X

X

X

X

X

X

X

X

APPLICATION EXAMPLES

Table A contains examples of products and the number of units that can be powered by each power supply, and is based on the VA rating of each product.

Table A. Product Capacity

Product	WCS4-20	WCS4/20B
Traditional Camera (6 VA avg.)	4	4
Outdoor Camclosure (4 VA)	4	4
Outdoor IP Camclosure (21.6 VA)	4	4
Indoor Spectra (30 VA)	4	4
Outdoor Spectra (75 VA)	4	4
Esprit without wiper or IOC/IOP (50 VA)	4	4
24 V PT780 Legacy System (P/T, Enclosure, Receiver, Camera, Defroster)
without heaters (90 VA)	4	NA
with heaters (140 VA)	3	NA
with heaters and P/T heater blanket (180 VA)	2	NA
PS20-24	4	4
Esprit TI (70 VA)	4	4
ExSite (120 VA)	3	NA

4 C654M-E (12/08)