21-04-2009, 04:16 PM
My intercom has the usual NO/NC/Common setup. When attach
CB24Common --> Common -> NO -> CB24Single
the gate immediately opens. Intercom NO to common is showing high resistance normally and low resistance when enabled but does not click so I'm guessing it's an electronic changeover rather than a voltage free relay. The CB24 common output is registering about 42V which seems high as the manual suggests 24V. Is that normal and could the combination of 42V across an electronic switch be the cause of the false triggering? This must be relatively common, is the solution a discrete relay to drive the CB24 to common input?
Thanks.
CB24Common --> Common -> NO -> CB24Single
the gate immediately opens. Intercom NO to common is showing high resistance normally and low resistance when enabled but does not click so I'm guessing it's an electronic changeover rather than a voltage free relay. The CB24 common output is registering about 42V which seems high as the manual suggests 24V. Is that normal and could the combination of 42V across an electronic switch be the cause of the false triggering? This must be relatively common, is the solution a discrete relay to drive the CB24 to common input?
Thanks.
