AMC2 4W | Installing en 25 |
5.4Cabling
CAUTION!
The cables used in the AMC2 4W access control system are not
!prone to electrical interference. However, you should avoid routing cables close to heavy load switching cables and equip-
ment. If this is unavoidable, cross the cable at right angles every 1 to 2 m (3 to 6 ft) to reduce interference.
Grounding and Shielding
The main grounding point at the AMC2 4W will be connected with pin 2 of the power supply connector - see Figure 7.6.
It is good practice to shield all wires carrying low level signals.
The AMC2 4W enables you to set up a central ground or shield- ing point, simply by setting a couple of jumpers. Set these jumpers only if ground or shield is not connected otherwise.
WARNING!
!Risk of damaging equipment!
When using multiple AMC2 4W devices, set the ground main jumper only once to assure a central point star connection.
5.4.1Conductor data for connection to power supply
For short distances below 25m (75 feet) use AWG18 conduc- tors. For higher distances install an additional power supply close to the AMC.
Please, calculate the voltage drop by checking the conductor specifications for characteristic resistance values. The voltage drop shall not exceed 2V.
Example:
Length = 100m/328 ft
Bosch Security Systems | Installation manual | F.01U.024.965 V.4 2006.09 |
