Functional description of MBC110
581E,5721/ 07/2006 MPR112_1
page 54/72
Version: 01
After recording a mode change no new opening impulses are ac-
cepted. That means both opening entries must be ignored and both
card readers must be locked.
8.4.13 Mode 2: Homing – Teach-in procedure
Both end positions are taught-in, i.e. a homing is realised.
For this after return of tension the motor firstly goes to the inner rub-
ber buffer and so determines the open end position. As soon as the
safety light barriers are free the motor goes with reduced speed
(same as Input 6 = off) to the outer rubber buffer and thus deter-
mines the close end position. From the next closing movement on
the gate operates in the chosen speed.
As it may happen that during the first closing movement an object is
located between the wings the outer rubber stop is only taken as
reference in case that a minimum angle (depending on wing type)
between inner and outer stop has been exceeded. If the minimum
angle is not reached the control unit goes out of operation and acti-
vates an alarm (Error 40 = Homing-Span). Then, a service engineer
has to come at site and to check why the mechanic has not reached
the target position. Then, he has to disconnect and connect again
the operating voltage.
8.5. Special cases within the operating proce-
dure
8.5.1. Impact recognition
Normally, persons should be protected in the safety area by the
means of the PE beam logic, so that no impact should happen.
However, it is possible that an object (e.g. a suitcase) is passing the
safety area when closing the wings. Because of its form it cannot be
recognised from the safety PE-beams. In this case an impact can hit
the object.
Depending from position of DIP switch 12 the gate must react differ-
ently by recognizing an impact.
DIP 12 = OFF:
An identified hindrance is ignored. The barrier continues to close.
DIP 12 = ON:
The barrier opens immediately upon realizing an object and closes
again with reduced speed to make sure the object does not get
damaged (1 s delay time).
At the same time an alarm output is activated.
Содержание MPR 112
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