Power Connections; Wire Selection - American Dynamics AD1273 CobraDome Installation And Operation Instructions Manual

AD1273

Power Connections

The 24VAC power lines enter the AD1273 through a 7-pin
Plug and Ramp connector (see Figure 9). The 7-pin Ramp
connector is mounted to the printed circuit board. The 7-pin
Plug mating connector is shipped with the AD1273 unit.
Assemble the 7-pin Plug connector by inserting the appropriate
24VAC power and ground lines into the corresponding slots
listed in Table 5 and tightening the hold-down screws.
Table 5 - 24VAC Power Lines to 7-Pin Plug Connector
• Pin 3 - 24VAC INPUT power signal
• Pin 4 - Dome chassis GROUND
• Pin 5 - 24VAC INPUT power signal
24VAC
7-Pin Ramp Connector
(Mounted to Circuit Board)
1
2
3
4
5
6
7
24VAC
Dome Chassis
Ground
Figure 9 - Power Connections

Wire Selection

Table 6 lists the wire gauge versus maximum distance allowed
between the AD1273 pan/tilt and the voltage source. Shielded
cable is recommended for most applications.
Note: Distance calculations are based on solid copper wire,
single common, and worst case current draw (i.e.,
diagonal pan/tilt operation).
22AWG
89ft
27.1m
1
2
3
4
5
6
7
7-Pin Plug Connector
11
Table 6 - Wire Gauge -vs- Distance
20AWG 18AWG
142ft 226ft
43.3m 68.9m
CONNECTIONS
16AWG
359ft
109.4m
PCB Cover