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Operating Manual
MHM-97442
Table 5-1: Recommended limit values
Sensor type
Hall effect sensor
1
Only if Sensor monitoring has been activated.
These parameters are grayed out if VR has been selected for parameter Sensortyp.
Note
At VR sensors, sensor voltage limits are not used for the sensor monitoring. The channel
supervision only checks whether a VR sensor is connected or not. This supervision is active
when a checkmark is placed in box Sensor monitoring and machine standstill has been
detected.
Upper trigger threshold and Lower trigger threshold
The monitor works with a TTL signal (0 to 5 V) generated from the input signal and the
configured trigger thresholds. When the input signal falls below the upper trigger
threshold (UTT), the TTL signal is switched to +5 V. When exceeding the lower trigger
threshold (LTT), the TTL signal is switched to "0". See
Click Trigger threshold detection to open the dialog for the automatic trigger threshold
detection. See
MHM-97442, Rev. 2.06
Upper sensor
voltage limit
1
5 V
Definition of the trigger thresholds
(continued)
Lower sensor
Explanation
voltage limit
18.5 V
Channel OK is switched off if
the input voltage is within the
defined range. Between 5 V
and 18.5 V, for example.
Channel OK is switched on if
the input voltage is out of the
defined range. Below 5V or
above 18.5 V, for example.
Note
Ensure that the resistance
network has been connected
to the sensor input. Otherwise
the Channel OK supervision
does not work.
Figure
5-26.
how to define trigger levels.
Configuration
February 2023
97
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