Schmalz 10.02.02.05235, Руководство по эксплуатации

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General Description of Functions
36 / 72 EN-US · 30.30.01.01484 · 00 · 01/21
Dynamic pressure monitoring:
If possible, a dynamic pressure measurement is taken at the start of every suction cycle. The result of this
measurement is compared to the vacuum limit values set for H1 and H2.
If the dynamic pressure is greater than (H2 - h2) but less than H1, the corresponding condition monitoring
warning will be set and the system status light will switch to yellow.
Leakage level evaluation:
This function determines the average leakage during the last suction cycle, divides it into subareas and
makes it available as a parameter via IO-Link.
Autoset
The CM Autoset IO-Link function in the process output data allows the condition monitoring parameters
for maximum permitted leakage [
-L-
] and the evacuation time [
t-1
] to be set automatically. The ac-
tual values from the last suction cycle are combined with additional tolerance and stored.
7.26.2 Energy Monitoring (EM)
To optimize the energy efficiency of the vacuum gripping systems, the ejector provides functions for mea-
suring and displaying energy consumption.
Percentage-based air consumption measurement:
The ejector calculates the air consumption from the last suction cycle as a percentage. This value corre-
sponds to the ratio for the full duration of the suction cycle and the active suction and blow off times.
Absolute air consumption volume:
An externally recorded pressure value can be supplied using the IO-Link process data. If this value is avail-
able, not only a percentage-based air consumption measurement, but also an absolute air consumption
measurement can be performed. The actual air consumption of a suction cycle is calculated taking the sys-
tem pressure and nozzle size into account.
An absolute air consumption measurement can be made only using a pressure value supplied
externally via IO-Link.
The measured value for the absolute air consumption (air consumption per cycle) is reset at the start of
suction and then continuously updated during the cycle. It can continue to change until after the end of
blow-off.
Energy consumption measurement:
The ejector determines the electrical energy consumed during a suction cycle, including the energy it con-
sumes itself and the energy consumed by the valve coils.
To determine the values for the air consumption as a percentage and the electrical energy consumption,
the neutral phase of the suction cycle must also be taken into account. Therefore, the measured values
can only ever be updated when the next suction cycle begins. Throughout the cycle, the measured values
displayed then represent the results from the previous cycle.
7.26.3 Predictive Maintenance (PM)
For early detection of wear and other impairments to the vacuum gripper system, the ejector features
functions for detecting trends in the quality and performance of the system. The leakage and dynamic
pressure are measured for this purpose.
Measurement of leakage:
The leakage (represented as the vacuum drop per time unit in mbar/s) after the control function inter-
rupts suction because the vacuum limit value H1 has been reached is measured.