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Control
6.2
Optimized control
Only turn on the suction when workpieces are being lifted. Otherwise, additional
dust from the environment is drawn in, which could shorten the necessary mainte-
nance intervals.
Simplified diagram of a gripper cross-section
Vacuum reservoir
Compact cylinder (extended; vacuum reservoir and valve chamber
separated)
Valve chamber
Sealing foam
Workpiece
Pretensioning
Before the suction process starts, the
vacuum reservoir integrated into the suction bar must be evacuated
The amount of time this process takes varies based on the suction bar type,
vacuum generator capacity, and the length. Generally, this process is started
approximately 0.5 to 5 seconds before picking up the load.
Activating the solenoid valve I (separating cylinder/upper LED illuminat-
ed):
The cylinder’s piston rod extends and separates the suction chamber
from the storage chamber. Vacuum is generated in the storage chamber
when the vacuum generator is switched on.
Applying suction
Once the sealing mat has been placed on the workpiece and is compressed,
the system can start picking it up.
Resetting the solenoid valve I (separating cylinder/upper LED not illumi-
nated):
The cylinder’s piston rod is retracted and the load is picked up. The load
can be transported.
Depositing
Once the workpiece has been transported and set down, it must be deposit-
ed.
Activating the solenoid valve I (separating cylinder/upper LED illuminated)
The cylinder’s piston rod extends and separates the suction chamber
from the storage chamber.
Activating the solenoid valve II (blow off/lower LED illuminated): The vac-
uum breaks down in the vacuum chamber and the workpiece is released
from the sealing mat.
Caution:
The cylinder is retracted when no voltage is applied. In this way, the reservoir
and suction chamber are connected.