Kilsen KFP-AF Series, Руководство по установке

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Chapter 2: Installation
16 KFP-AF Series Installation Manual
• If using shielded loop cable, ensure that the shield is continuous (connected
through to each loop device). To prevent earth loops caused by
electromagnetic interference, only one cable shield should be connected to
earth, as shown in Figure 6 on page 15.
Class A loop connection
Connect Class A loops as shown in Figure 6 on page 15. Class A loops are
supervised for open and short circuit. Terminate unused Class A loops A (+) to B
(+) and A (-) to B (-).
Class B loop connection
Caution:
Never install more than 32 devices on a Class B loop.
Connect Class B loops as shown in Figure 7 below. Connection may be made to
either the A connectors (as shown) or to the B connectors, but not to both. Class
B loops are supervised for short circuit.
Figure 7: Class B loop connection