GMC-I Messtechnik GmbH
R2700–24
Actuator Output for Contactor
If, during ascertainment of control parameters (manual optimization or self-tuning), a
cycle time
results which is significantly shorter than advisable
for the service life of the contactor,
cycle time
can be increased to the limit of system controllability by configuring the actuating outputs for contactor
control (
rELA
=
YES
). If the bit is set before self-tuning is started, cycle time is set to the highest possible value by the self-tuning function.
Water Cooling
In order to account for the disproportionately powerful cooling effect which prevails when water is evaporated, the cooling control variable can be read
out in a modified fashion by configuring the switching output for water cooling (
Outx
=
H2O
).
Extra derivative action for cooling
In controlled systems in which cooling has much better or worse thermal contact than heating, control performance for a cooling work point can be
improved by setting the
tu II
configuration to
EnA
. This makes it possible to set the delay time for cooling (parameter
tu II
) independently.
In the case of
water cooling,
half the derivative action is automatically used for cooling when configuration
tu II
=
diS
has been selected.