Controller MO 36
45
phot-cell outside LSI
transmitter 2-6
receiver 1
transmitter 1
receiver 1
24V 0V
1k
0
24V 0V
1k
0
photo-cell inside LSA
receiver 2-6
24V 0V
1k0
24V 0V
1k0
transmitter 2-6
receiver 1
24V 0V
24V 0V
24V 0V
24V 0V
transmitter 2-6
AMPE
L
BTG
LE
RN
BT
10.7.10 Sequence
pa
: Photoelectric barrier testing
When sequence
pa
is activated by button
LERN
, the present operating mode is displayed
.
Using
button
BT
the desired operating mode can be selected. To return to the learning sequence use button
LERN.
Display Corresponds
to
of
Photoelectric barrier testing not activated.
on
Photoelectric barriers, which have passed the test during the programming of the
running distances for the wings, are also being tested during normal operation.
Table 20
Prior to every gate movement a photoelectric barrier test may be performed. The test consists of two
phases. During the first phase the supply of the transmitters is switched off. The controller waits for the
receiver to report an obstacle within the next 2.5s. No the second phase begins. During the second
phase the supply of the transmitter is switched on again. The controller expects the receiver to report
no obstacle anymore. Only after this procedure the gate starts to move. If an error occurs during the
first phase, the photoelectric barrier is faulty. An error message is issued. If an error occurs during the
second phase, the controller interprets this as a real obstacle and the gate will not move. No error
message is issued. You can connect and test 6 photoelectric barriers each for LSA and LSI with the
controller MO 36. All relay outputs of the receivers are switched in serial connection. Parallel to the
relay contacts of each receiver you
must
add a
1kOhm +/- 5%
resistor.
Drawing 28
REMARK!
During the learning of the running distances the controller performs a photoelectric barrier
testing and learns if and how many photoelectric barriers are connected. If the
photoelectric barrier testing as successful, tests can also be done later during normal
operation. In case the test during the leaning phase was not successful, no photocell
testing will occur later during normal operation.