PRO AIR TPK 21 - Setting the Limit Values

9.3 Setting of Limit Values
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After selecting the desired output value and the switching characteristics, you can set the
upper and lower limit values for the relay.
The desired limit values for Relay 1 are set using "Upper limit value" and "Lower limit value“.
The following setting options can be selected in "Limit values".
Upper or lower
limit value
Used
The settings determines whether the upper limiter this channel should be
used. If it is not used, the following settings (limit value and hysteresis) are
not possible.
Limit value
The upper limit value is the switching point, beyond which the relay
switches.
Hysteresis
Hysteresis is the difference between the switch-on and switch-off points at
the limit value. The switch-on point is the limit value plus half of the
hysteresis, and the switch-off point is the limit value minus half of the
hysteresis.
Select the "Upper limit" field (the field will be highlighted) and go to the desired value in the
list that appears.
Confirm your choice with .
Now select the "Lower limit" field (the field will be highlighted) and go to the desired value in
the list that appears.
Confirm your choice with .
Source
NC / NO
Upper Limit
Lower Limit
Source
NC / NO
Upper Limit
Lower Limit