Check settings of Jumper on
mainboard (see page 9)
on Comfort module !
Connecting an opto-electric FRABA-Safety edge
It is possible to connect to the DC 3 an electric, pneumatic or opto-electronic (FRABA) type Safety
Edge device directly to the terminals 48, 49 & 50 without any specific control boxes.
The controlling of the safety edge is managed by the Comfort module and therefore there is no
need for an additional safety edge management device.
Opto-electric safety edge - FRABA
terminal 48 = Safety edge (-GND)
terminal 49 = Safety edge (Signal)
terminal 50 = Safety edge (+ 15V)
Because the function of the safety-edges is automatically checked by the Comfort module
there is normally no need to test it.
In this case the screw terminals 46 & 47 of the pre-limit switch can be bridged.
In situations where the rubber of the safety edge needs to touch the ground you have to
control this with a pre-limit switch (adjustment 5 cm above ground), thus preventing the
door to stop and return.
Connection pre-limit switch if using an electric- or
opto-electronic safety edge
Connection of bridge on terminals 46 & 47 - pre-limit switch.
Connection safety edge (optional, only if Comfort module is connected!)
The controlling of the safety edge is managed by the Comfort module and therefore there
is no need for an additional safety edge controler device. According to the EU regulations
it is necessary to test the pneumatic safety edge on EVERY door cycle.
For this purpose the DC 3 has an intelligent testing device which recognises when the door
has finished the closing cycle.
(resp. switches from „STOP with reverse“ to „STOP“ - electr. safety edge).
Connection of a pneumatic safety edge
In order to test the complete circuit of the pneumatic safety edge, it is necessary to connect
(on the inside of the pressure switch enclosure) a resistor (3,3 to 8,2 kΩ) in series with the
normally closed contact of the pressure switch.
Connection of pressure switch (pneum. safety edge)
Connecting the pre-limit switch
The pre-limit switch has to be mounted at the door guides, so that the closing door reaches the
pre-limit switch (e.g. extra pre-limit switch PS-ECO about 5 cm above the ground. After the pre-
limit switch has reacted the unit controlls the exact reaction of the safety edge as well as the
opening of the limit switch in DOWN direction. The pre-limit switch can also be activated by an
additional N.C. contact, the contact must open about 5 cm above the ground.