West Control Solutions Pro-16 - Manual (Page 44)

Configuration
level
9499-040-93811 / 59537-1 Page 44 of 88 Pro-16
4.3.5 Switching attitude non-linear ( CyCl= 2 )
With this method, the cooling power
is normally much higher than the
heating power, i.e. the effect on the
behaviour during transition from
heating to cooling may be negative.
The cooling curve ensures that the
control intervention with 0 to -70% correcting variable is very weak. Moreover, the
correcting variable increases very quickly to max. possible cooling. Parameter
F.H2O can
be used for changing the characteristic curve. The standard method (see section 4.3.3) is
also used for heating. Cooling is also enabled dependent of process temperature .
Parameters to be adjusted
E.H2O: min. temperature for water cooling
( PArA / Cntr) t.on: Pulse duration water cooling
t.off: min. pause water cooling
F.H2O: adaptation of (non-linear)
characteristic Water cooling