Schmalz SXMPi, Руководство по эксплуатации

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Description of Functions
EN-US · 30.30.01.01721 · 01 · 09/19 43 / 66
Bit Event Update
0 Valve protection function activated Cyclic
1 Set limit value t-1 for evacuation time exceeded Cyclic
2 Set leakage limit value -L- exceeded Cyclic
3 Limit value H1 was not reached Cyclic
4 Dynamic pressure > (H2 - h2) and < H1 As soon as a corresponding dy-
namic pressure value has been de-
termined
5 Supply voltage U
S
outside the operating range Constant
6 Supply voltage U
A
outside the operating range Constant
7 Specified system pressure during suction process too low Constant
8 Preset system pressure outside the operating range Constant
Bits 0 to 3 describe events that can only occur once per suction cycle. They are reset at the start of every
suction cycle and remain stable until it has ended.
Bit number 4, which describes dynamic overpressure, is initially deleted when the device is switched on
and is updated when a dynamic pressure value is detected.
Bits 5 to 8 are regularly updated independently of the suction cycle, and reflect the current values for the
supply voltage and system pressure.
The values measured by the condition monitoring system, namely the evacuation times t
0
and t
1
and the
leakage value L, are reset at the beginning of the suction process and updated once they have been mea-
sured.
7.18.2 Energy Monitoring (EM) [0x009B, 0x009C, 0x009D]
In order to optimize the efficiency of vacuum gripping systems, the ejector provides a function for mea-
suring and displaying the energy and air consumption.
When measuring air consumption as a percentage, the ejector calculated the air consumption from the
last suction cycle as a percentage. This value corresponds to the ratio for the full duration of the suction
cycle and the active suction and blow-off times.
The -PC- measures the operating pressure directly.
In variants without a pressure sensor, an externally recorded pressure value can be supplied using the IO-
Link process data. If this value is available, absolute air consumption measurement can be performed in
addition to the percentage-based air consumption measurement. The actual air consumption of a suction
cycle is calculated taking the system pressure and nozzle size into account, and specified in standard liters
[NL]. The measured value is reset at the beginning of the suction cycle and constantly updated during the
running cycle. As such, no further changes can occur once blow-off is complete.
The electrical energy consumed by the device and by the valve coils during a suction cycle is measured and
given in watt-seconds (Ws).
For determining the electrical energy consumption, the neutral phase of the suction cycle must also be
considered. Therefore the measured values can be updated only when the next suction cycle begins. Dur-
ing the entire cycle, they represent the results from the previous cycle.
The ejector is not a calibrated measuring device. However, the values may be used as a refer-
ence and for comparison measurements.
7.18.3 Predictive Maintenance (PM)
Overview of Predictive Maintenance (PM)
In order to allow early detection of wear and other impairments to the vacuum gripping system, the ejec-
tor provides functions for recognizing trends in the quality and performance of the system. This is accom-
plished using the measured values for leakage and dynamic pressure.