DESCRIPTION OF FUNCTIONS
32 | EN
6.2 Diagnostics and monitoring functions
The SCTMi provides a variety of diagnostics and monitoring functions.
Determination of the required system parameters
Display of the device status through messages and status traffic lights
Rapid provision of EPC data using the process data
Condition monitoring
Provision of IO-Link events
6.2.1 Determination of SCTMi system parameters
The following parameters are used for the system monitoring functions and are made available to the
user as ISDU parameters. The values for the individual ejectors are constantly redetermined for each
suction cycle.
ISDU
Dec
Description
66
Sensor voltage: current level, minimum and maximum level
67
Actuator voltage: current, min, max.
148
Evacuation time t0 for ejector 1 to 16
149
Evacuation time t1 for ejector 1 to 16
156
Air consumption per cycle for ejector 1 to 16
160
Leakage for ejector 1 to 16
161
Dynamic pressure for ejector 1 to 16
164
Maximum vacuum reached per suction cycle for ejector 1 to 16
6.2.1.1
Operating voltage measurements
The U
S
and U
A
operating voltages that are currently applied on the SCTMi are measured.
In addition, the maximum and minimum U
S
and U
A
operating voltages that were measured since the
last activation are logged by the SCTMi.
The maximum and minimum values can be reset via IO-Link during operation using the
appropriate system commands.
6.2.1.2
Measurement of the evacuation time t
0
The t
ime (in milliseconds) after the start of a suction cycle, which is started by the “Suction ON”
command, until switching threshold H2 is reached is measured.
6.2.1.3
Measurement of the evacuation time t
1
The time (in milliseconds) after reaching the switching threshold H2 until the switching threshold H1 is
reached is measured.
