Possibility 2 To Eliminate Interferences - Cedes cegard/Lift LI Mode D'emploi

cegard/Lift LI
10.3 Possibility 2 to eliminate Electromagnetic Interferences
Symptom: The switching of the locking motor can interfere with the safety light curtains, if the interference from the
locking motor circuit is not suppressed. This interference makes itself apparent in that the elevator cannot travel from the
floor, until the safety light curtains are newly powered-up.
Filtering actions: The following diagram has been proven effective especially with 3-phase blocking motors.
To be wired
Connection
Connect the RC - common to an
extra PE wire or to cabine light neutral,
to divert interferences from the door
blocking to an another conductor.
Machine room
N
L 1
2
L
3
L
+
-
24 VDC
Figure 10: Possibility 2 to eliminate Electromagnetic Interferences
© CEDES | V 2.7
RC network as
EMC filter

to be
removed
N
PE2
Extra PE wire
Cabine light neutral wire
Door blocking motor
M
+
-
Elevator
car
PE
Control unit
light curtain cegard/Lift LI
Opto edges cegard/Lift LI
Elevator car case (metal)
connected to PE
Traveling cable
Contact set by
mounting screws
Contact is set by wire
English
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