ascon M4 series - Heat Cool Control

33
4 - Operations
By a sole PID control algorithm, the
controller handles two different out-
puts, one of these performs the
Heat action, the other one the Cool
action.
It is possible to overlap the out-
puts.
The dead band parameter
#d.bnd,
is the zone where it is possible to
separate or overlap the Heat and
Cool actions.
The Cool action can be adjusted
using the relative cool gain para-
meter #r.C.Ga.
To limit the Heat and Cool outputs
the parameters #0p. H and #0p.HC
can be used.
When there is an overlap, the dis-
played output
# OUt shows the
algebric sum of the Heat and Cool
outputs.
HEAT COOL CONTROL
A Heat /Cool actions
separated
Insert positive
#d.bnd
value
(0…10%)
B Heat /Cool actions
overlapped
Insert negative
#d.bnd
value
(-10…0%)
100%
100%
#d.b.nd
#Op.HC#Op. H
50%
Heat
output
Cool
output
0%
0%
PID output
-100%
100%
100%
#d.b.nd
#Op.HC#Op. H
50%
Heat
output
Cool
output
0%
0%
PID output
-100%
C Cool action adjusting
Example with different relative cool
gains
D On-Off Cool action
100%
100%
#d.b.nd
#hy. C
50%
Heat
output
Cool
output
0%
0%
PID output
On
Off
100%
100%
#d.b.nd
#r.C.Ga
0.1…10.0
50%
Heat
output
Cool
output
0%
0%
PID output
-100%
=2.0
=1.0
=0.5
M4UK.ed6 20-05-2005 11:43 Pagina 33