Description of Functions
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EN-US · 30.30.01.01961 · 00 · 06/19
Condition Monitoring Events and Status Display [0x0092]
Any condition monitoring events that occur during the suction cycle cause the system status indicator
light to immediately switch from green to yellow/orange. The event that caused this switch can be seen in
the “Condition monitoring” IO-Link parameter.
The table below explains the coding of the condition monitoring warnings:
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 SP1 was not reached
Cyclic
4
Dynamic pressure > (SP2-rP2) and < SP1
As soon as a corresponding dy-
namic pressure value has been de-
termined
5
Supply voltage U
S
outside the operating range
Constant
8
Input pressure outside 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 and 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.
8.24.2 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.
An externally recorded pressure value can be supplied using the IO-Link process data. If this value is avail-
able, 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.
