User manual

18 BC615 Installation and User Manual
Recommended cables
Cable from SiPass Entro to CR1
Maximum length: 1200 metres.
• Pair twisted screened (1 pair + screen), e.g. Beldon 9502
(communication) and 1.5mm
2
(power)
OR
• PAARFLEX CY (custom cable comprising communication and
power in one cable).
Cables between CR1 and BC615
Maximum length: 15 metres. Specified cable: Straight screened cable
(4 + screen), e.g. Beldon 9534.
Considerations concerning earthing & screening
The cable screens must be connected to protective earth, but only in
one place in the system. Also remember that metal parts in doors or
vehicle barriers can be in contact with earth. For readers installed on
these surfaces, the screen must not be connected to the metalwork.
Avoid placing the cables close to heavy current installations, (e.g. lifts
and power doors) since they may cause disturbance.