ZKTeco InBio160, Руководство пользователя

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4 Equipment Communication
The background PC software can communicate with the system according to two protocols (TCP/IP
and RS485) for data exchange and remote management.
Access Control Networking Wires and Wiring 4.1
1. The power supply is 12V DC converted from 220V.
2. As an electronic lock has a large current, it generates a strong interference signal while
functioning. To reduce such an effect, 4-core wires (RVVP 4
×
0.75mm2, two for a power supply,
and two for a door sensor) are recommended.
3. RS485 communication wires are made of internationally accepted shielded twisted pairs,
which prove effective to prevent and shield interference.
4. The Wiegand readers use 6-core communication shielded wires (RVVP 6×0.5mm) (usually there
are 6-core, 8-core, and 10-core types available for users to select according to the ports) to
reduce interference during transmission.
5. Other control cables (like exit switches) are all made of 2-core wires (RVVSP 2
×
0.5mm2).
6. Notes for wiring:

Signal wires (like network cables) can neither run in parallel with nor share one casing pipe
with large-power electric wires (like electronic lock wires and power cables). If parallel
wiring is unavoidable for environmental reasons, the distance must be above 50cm.

Try to avoid using any conductor with a connector during distribution. When a connector is
indispensable, it must be crimped or welded. No mechanical force can be applied to the
joint or branch of conductors.

In a building, the distribution lines must be installed horizontally or vertically. They should
be protected in casing pipes (like plastic or iron water pipes, to be selected according to the
technical requirements of the indoor distribution). Metal hoses are applicable to ceiling
wiring, but they must be secure and good-looking.

Shielding measures and shielding connection: If the electromagnetic interference in the
wiring environment is found substantial in the survey before construction, it is necessary to
consider the shielding protection of data cables when designing a construction scheme.
Overall, shielding protection is required if there is a large radioactive interference source or
wiring has to be parallel with a large-current power supply on the construction site.
Generally, shielding measures includes keeping a maximum distance from any interference
source, and using metal wiring troughs or galvanized metal water pipes to ensure reliable
grounding of the connection between the shielding layers of data cables and the metal