Underwriters Laboratories Network IR Speed Dome Camera Instrukcja Instalacji Pobierz pdf (Strona 21)

IR Speed Dome Installation Manual

1.5 Alarm In/Out Connections

The IR speed dome, network IR speed dome can be connected with 7 alarm inputs (0~12VDC) and 2 alarm outputs. Refer to the

following diagrams:

JQC-

3FG

Relay

12VDC

GND OUT

L N

～220V AC

Relay Output

Dome

(10 A 250VAC)

Diagram (left)

Diagram(right)

30mA

OUT(n)

DC Load

Relay Output

Dome

OUT(n)

The alarm provides the relay output (no voltage), and the external power supply is required when it connects to the alarm device.

For DC power supply (left diagram), the input voltage must be within the range of 12VDC, 30mA. For AC power supply, the external

relay must be used (right diagram) so as to prevent damages to the unit and avoid risk of an electric shock.

1.6 Power Cable Explanation

Under the situation of standard AC power supply of speed dome, the relation between cross-sectional(S(mm²)) area of bare cable for

IR speed dome and the maximum transmission distance (L(m) ) of bare cable for IR speed dome should be L = 50 * S; And L = 40 * S

for network IR speed dome. For example, when bare cable’s cross-sectional is 1mm ², the distance for transmission should not exceed

50m for IR speed dome and 40m for network IR speed dome. Please refer to 'Appendix 3 Table of Wire Gauge Standards' for the

American or Britain's wire gauge. For example, when the American wire gauge is 18, the recommended distance should be 0.7854 *

50 = 39.27m.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 39 40

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Underwriters Laboratories Network IR Speed Dome Camera Instrukcja Instalacji Strona 21