Controller MO 36
29
10.2.2 Safety contact profile
REMARK!
Each safety contact profile terminal SLA and SLZ which is not used has to be linked to an
8.2kOhm resistor.
REMARK!
In case a safety function leads to switching-off, with a system with two wings always both
motors switch off.
The controller is equipped with two integrated detectors (with testing function according to EN954-1
category 2) for safety contact profiles with resistance detection to secure the closing edges in direction
OPEN and CLOSED.
The red LEDs
SLA
and
SLZ
show the status of the safety contact profiles. When the safety contact
profile is activated, the corresponding LED lights.
Direction of
Action of SLA
Action of SLZ
Stop, gate shall open
Gate can only open in emergency
-
Stop, gate shall close -
Gate can only close in emergency
mode
Gate wing opens
Stop and reversing for a short
distance
-
Gate wing closes
-
Stop and reversing
Table 6
REMARK!
Counting function:
When the gate makes contact with an obstacle and the safety contact strip SLZ activates
the reversing function, the gate opens.
In case the automatic closure is activated and the obstacle does not get removed, a
constant closing by automatic closure and reversing by the obstacle could occur.
To prevent this, a
counting function
is provided. After 2 tries to close by automatic
closure only a reversing for a short distance occurs. The counter is cleared when the gate
is operated manually.