Each controller can be configured as a 1-
way or 2-way controller. Two parameter
sets are available for each controller. The
2nd parameter set is activated if the digital
input 2 is set as the
[Control parameter switch-over]
. In this
case
[Parameter set 2]
can be configured
in the menu.
When connecting the actuator, ensure
that the actuator which increases the
measured value is connected to the corre‐
sponding output
[Increase measured value]
, and the
actuator which decreases the measured
value is connected to the output
[Decrease measured value]
, see
Ä Chapter 6.3 ‘Electrical installation’
on page 31
.
Example: A medium with an actual value
pH 3 is to be have its pH increased to the
setpoint pH 7 using a sodium hydroxide
solution (pH >14). Therefore connect the
actuator to the control output
[Increase measured value]
.
Setting the
[Control]
104
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