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Installation
Technical Manual
62
04045376 - 05/2016
Kaba access manager 92 30
5.7.8.7 Connecting door openers
Closed-circuit door-openers and open-circuit door-openers can be used.
For door openers that are supplied with DC voltage, a diode (a freewheeling diode)
must be connected in parallel to the door opener to suppress interference. In doing
so, make sure that the diode is connected in reverse-bias direction and check the po-
larity of the connected voltage.
When using an alternating voltage power supply, a varistor or a bipolar suppressor
diode must be connected in parallel. As regards the dimensioning and type, observe
the specifications of the door opener manufacturer.
The diode or varistor must be connected directly to the door opener and may not be
fitted to the access manager.
This step is not required if a door opener with internal varistor or diode is used.
1
Door-opener
2
Freewheeling diode or varistor