Chapter 1: Installation
40 CDC4 Door Controller Installation and Programming Manual
Cabling requirements
This section contains recommendations for installers and electricians for the
application and wiring of Advisor Advanced equipment with respect to:
• System earthing
• Data bus cabling
System earthing
Door controller can be connected to an Advisor Advanced control panel. Follow
the system earthing recommendations provided in Advisor Advanced
ATSx500A(-IP) Installation and Programming Manual.
Ethernet cabling
To comply with Class B radiated emissions the Ethernet cable should be cable
tied to the enclosure rear for a minimum length of 40 cm. This can be a straight
run or a number of loops.
Data bus cabling
The cabling recommendations for the system bus and buses are:
• Use 2-pair twisted shielded data cable such as WCAT52 or WCAT54.
• In each segment of bus cabling, connect one end only of the data cable shield
to a device bus earth terminal. Join data cable shields where cable extends
past a device that does not have a bus earth connection.
• The length of the bus cable run must not exceed 1.5 km.
Power supply to bus devices
Devices on the CDC4 buses may be supplied from the CDC4 12 VDC bus
output. Use an external 12 V power supply when:
• The device is more than 100 m (data cable length) from the panel
• Electrical isolation is required
• More power is needed than can be provided by the bus
When powering a bus device from an external 12 V power supply:
• Connect the external power supply “+” terminal to the device “+” terminal. Do
not connect the power supply “+” to the bus “+”.
• Connect the external power supply “−” terminal to the device “−” terminal.
• Connect the bus “−” to the device “−” terminal.
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