Description of the control programs
22 Operating and Programming
5 Description of the control programs
Selection via the user interface page "Control Program / Control Program Selection / Program
ID".
ZPA programs with stop function for straight sections and curves
The programs "SingleRelease" and "TrainRelease" enable zero-pressure conveying.
The conveyed goods are held back until the next zone is recognized by the logic as "free".
If the product accumulates, a signal is sent to the next upstream zone to hold back the conveyed
products. There is always a gap between the conveyed goods, there is no back pressure.
In SingleRelease mode, the deduction takes place in individual zones, in TrainRelease mode, the
deduction is block by block, so that all associated zones are released almost simultaneously.
In the ZPA programs, one MultiControl can control up to four zones. Each zone can be stopped
via an input signal or a PLC.
The conveying process runs from "upstream" to "downstream".
The start zone is always zone 1. It is not possible to define a zone other as the start zone.
When the stop signal is active, the conveyed goods are still transported to the zone sensor. The
conveyed goods are transported further after resetting the stop signal, as long as the
downstream zone is free.
If the goods to be conveyed are removed from a stopped zone and the stop signal is reset, the
RollerDrive starts and, after timer 4 has elapsed, the conveying process continues. If the material
to be conveyed is placed in the zone sensor before timer 4 expires, the conveying process starts
immediately. As long as the conveyed material is stopped, the following zone still receives a free
signal, not a blocked signal.
A product must reach the next zone sensor within the timer 2 time after leaving the zone sensor.
While timer 2 time is running, the upstream zone is stopped. After expiration of the timer-2-time,
the zone is rated as free and the upstream-zone can transfer in, as it is assumed that the
conveyed material has been removed.
If a conveyed material blocks the zone sensor, the RollerDrive stops after expiration of Timer 2
(internal material monitoring). After a break, which also corresponds to timer 2, the RollerDrive
starts again. This process is repeated until the conveyed material has been removed from the
zone sensor. As long as the zone sensor is blocked, a blocked signal is sent to the upstream zone.
After a conveyed material has left the zone sensor, the RollerDrive runs as long as it is set in timer
3 (RunOutDelay).
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