2
0
1
8
-0
6
36
Manual Intervention in the Conveying Process
5
Manual Intervention in the Conveying Process
5.1
Manual Feeding of Conveyed Product
It is always possible to manually feed conveyed product. When doing so, it is assumed that the
conveyed product is placed in front of a zone sensor.
5.2
Manual Removal of Conveyed Product
It is possible to manually remove conveyed product from the accumulation conveyor line at any
time.
The zone logic distinguishes between the following cases:
Manual Removal with DC Roller Motor Running
During the removal of conveyed product, the zone whose sensor the product would have
reached next waits for the duration of the transportation time (see Chapter "Operating
Behavior") for the conveyed product to arrive. After this time, the zone will assume that it is
empty and continue with normal operation.
Manual Removal with DC Roller Motor Not Running
The conveyed product is located in front of a zone sensor. The zone detects the manual
removal at the zone sensor. The zone switches on its DC roller motor and starts searching for
conveyed product to ensure that the product was not simply pushed back and is now located
undetected between the zone sensors.
After the search time (see Chapter "Operating Behavior") has passed, the zone will return to
normal operation.
5.3
Manual Stop/Release
The zone coupling between the individual ZPA motor control modules can easily be used to
stop and resume conveyance. For this purpose, a suitable two-pin switch is inserted into the
zone coupling between two ZPA motor control modules, which separates the two input lines
and output lines from each other. An open switch ensures that the two zones connected via the
zone coupling can no longer receive control signals from each other and therefore can no
longer exchange conveyed product.
Manual Stop
As soon as the switch is opened, the release signal no longer reaches the upstream zone,
meaning that this upstream zone does not allow any more conveyed product to be conveyed to
the next zone. Furthermore, the sensor signal no longer reaches the downstream zone, which
in turn no longer attempts to receive the conveyed product.
Figure 5.1
IN
IN-
OUT
OUT-
X1
X2
1
2
3
4
1
2
3
4
IN
IN-
OUT
OUT-
1
2
3
4
1
2
3
4
