V01.01 | 2022/03
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4.3
Operating principle
The condition monitoring sensors use an acceleration measuring cell with capacitive measure-
ment. The monitoring of vibrations and oscillations makes it possible to detect deviations early
on and take countermeasures. The process value is transferred to the controller via IO-Link for
monitoring. It is also possible to use switching outputs to signal specific limit value violations.
Temperature measurement
The temperature is measured by means of an integrated temperature measurement cell. The
temperature measured can deviate from the ambient temperature due to different electrical
operating conditions in the sensor.
4.4
Functions and operating modes
The devices are provided with an IO-Link interface and can be set via an IO-Link master or an
FDT frame (e.g. PACTware).
4.4.1
IO-Link mode
The devices must be connected to an IO-Link master for operation in IO-Link mode. If the port is
configured in IOL mode, bidirectional IO-Link communication is provided between the IO-Link
master and the device. For this the device is integrated in the controller level via an IO-Link
master. The communication parameters are exchanged first of all; the cyclic data exchange of
the process data (process data objects) then starts.
4.4.2
SIO mode (standard I/O mode)
In standard I/O mode no IO-Link communication takes place between the device and the mas-
ter. The device only transfers the switching state of its binary outputs and can also be run via a
fieldbus device or controller with digital PNP or NPN inputs. An IO-Link master is not required
for operation.
The device parameters can be set via IO-Link and then operated at the digital inputs with the
appropriate settings in SIO mode. Not all functions and properties of the device can be used in
SIO mode.
4.4.3
Measurement axes
The devices are provided with the following three measurement axes. 16-bit telegrams, repres-
enting vibration acceleration or vibration speed depending on the configuration, are output via
IO-Link for each measurement axis. The vibration acceleration or vibration speed can be output
as an RMS value or a peak-to-peak value. The vector sum is also output as a 16-bit telegram.
Z
Y
X
Z
Y
X
Fig. 3: CMVT-QR20-IOLX3-H1141 –
measurement axes
Fig. 4: CMVT-QR20-IOLX3-RS4 –
measurement axes
