© 14.11.2005 ELKA-Torantriebe GmbH u. Co. Betriebs KG Page 31 TERRA 180/182 - 250/252 – 320/322
Function
Photo-cell
Gate not moving
Gate opens
Gate closes
LSI Remains
not
moving
Stops when
interrupted, opens
when free again
Stops when
interrupted, opens
when free again
L1
LSA Remains
not
moving
Stops when
interrupted, opens
when free again
Stops when
interrupted, opens
when free again
LSI Remains
not
moving
Stops when
interrupted, opens
when free again
Stops when
interrupted, closes
when free again
L2
LSA Remains
not
moving
Stops when
interrupted, opens
when free again
Stops when
interrupted, closes
when free again
LSI Only
closing
allowed
Stops when
interrupted, opens
when free again
No effect
L3
LSA Only
opening
allowed
No effect
Stops and opens
immediately
Table 18
8.1.10. Sequence PA: Photo-cell testing
Prior to every gate movement a photocell test may be performed. The test consists of two
phases. During the first phase the supply of the transmitters is switched off. The controller
expects within the next 2.5 s that the receiver reports an obstacle.
During the second phase the supply of the transmitter is switched on again. The controller
expects the receiver to report no obstacle any more. Only after this procedure the gate can
move.
If an error occurs in the first phase, the photocell (receiver) is damaged. The gate will not
move. An error message is given through the display. If an error occurs in the second
phase, the controller interprets this as a real obstacle. The gate will not move. No error
message is given.
You may connect and test each (LSI and LSA) maximum 6 pairs of photocells with the
controller MO36. Therefore add all n.c. relay contacts of the receivers in serial. Parallel to
each relay contact you must add a
1 k
Ω
resistor (resistors are needed only when photocell
test is used).
