General Description of Functions
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Any operation being performed in the menu will be interrupted if an error occurs.
The error code can also be opened as a parameter using IO-Link.
7.25 Energy and Process Control (EPC)
In IO-Link mode, the energy and process control (EPC) function is available. It is subdivided into three
modules:
•
Condition monitoring (CM): Condition monitoring to increase system availability
•
Energy monitoring (EM): Energy monitoring to optimize the vacuum system’s energy consumption
•
Predictive maintenance (PM): Predictive maintenance to increase the performance and quality of the
gripping systems.
7.25.1 Condition Monitoring (CM)
Monitoring the valve switching frequency:
When the air saving function is activated and there is a high leakage level in the gripping system, the
ejector switches between the suction and suction-off states very frequently. The number of valve switch-
ing procedures thus increases rapidly within a short time. To protect the ejector and increase its service
life, the ejector switches the air saving function off automatically at a switching frequency of more than 6
times every 3 seconds and activates continuous suction; the ejector then remains in the suction state. In
IO-Link mode, the appropriate condition monitoring warning is also set. In addition, the system status
light switches to yellow.
The basic monitoring for the valve protection function is also active in SIO mode.
Schematic diagram of the valve switching frequency
Vacuum
[mbar]
Time [s]
Suction ON
With the [
dC5
=
on
] setting, continuous suction is deactivated, and the ejector continues in control
mode despite a high leakage rate or control frequency greater than 6 times per 3 s.
Monitoring the Control:
If the vacuum limit value H1 is never reached during the suction cycle, the “H1 not reached” condition
monitoring warning is triggered and the system status light switches to yellow.
