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17
- with 1 mm
2
wire the distance can be increased to 400 m
- with 1,5 mm
2
wire the distance can be increased to 600 m
- with 2,5 mm
2
wire the distance can be increased to 1000 m
Use CDNV-RJ45 module to increase the cross-section of the above mentioned
cables (UTP) in the video system. When necessary, the video signal should also
be amplified with a separate device.
The maximum lengths of the other cables are described below.
It is recommended that the connection between the unit and the E-lock and the
power transformer be made using a 1 mm
2
cross-section cable (such as LY1,0).
Use similar cable to connect power supply of video systems (15VDC) to the
combiner located in the unit frame.
PLEASE NOTE! To ensure proper functioning and use safety, connect the
door entry unit (in metal frame) in its installation point to earth by
connecting the grounding terminal on
unit’s body with relevant protective
installation (PE).
For wires of other cross-sections use the following formula to calculate the
voltage drop:
2 x L[m] x I[A]
U = ---------------------------- [V]
57 x S[mm
2
]
Where: L - wire length from the unit to the transformer, e.g.: - 15m.
I - current - unit during opening
- 0.44A (with backlit name tag
module)
S - cable cross-section e.g.:
- 1.0 mm
2
2 x 15 x 0.44
U = --------------- = 0.23V
57 x 1.0
PLEASE NOTE!
The maximum voltage drop is 1.2V, or 10% of power supply
voltage. The maximum cable length for E-lock circuit is 7 m, for power supply
circuit - 15 m. Too small cross-sections and extensive wire lengths may cause
voltage drops during connections or opening (E-lock release), leading to
interference or resetting (restart) of the unit.
2. Power supply connection:
In case of passive audio receivers (2-wire receivers) the door entry unit is supplied
from a mains transformer, the supply voltage is 11.5VAC, connection to AC/AC
terminals (12V~). Recommended mains transformer is TR 11.5V 1.2A or TR DIN
11.5V 1.2A, available from ACO.
Содержание CDNP6ACC
Страница 67: ...67 Notes...
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