Carel heaterSteam UR Series - Production Control Via Variables A52 and A53

66
ENG
“heaterSteam” +0300075EN - rel. 1.2 - 29.09.2015
12.8 Production control via variables A52
and A53
a. Through the network, just after switching on the humidi er, set the
digital variable D15 = 0 (there is no need to repeat this step during
operation, unless the humidi er is turned o );
b. Set the internal variable I32=3;
c. Set the variable I9 (A0) = 0,1,2,3,4 for the on / o control, proportional
control, control with ambient humidity probe, ambient probe control
humidity and limit probe, control with ambient temperature sensor;
d. Send the request ambient/signal probe in the analog variable A52 in
the format from 0000 to 1000 (0% to 100%). Refer to the chart below
for I9 (A0) = 1; same applies to I9 (A0) =0,2,3,4;
e. If I9 (A0) = 3, send the limit probe signal in the analog variable A53
with format from 0000 to 1000 (0.0% to 100.0%)
ON
OFF
A52 variable
Steam_Pr
70.030.0
A0=0
Fig. 12.b
P0
Steam_Pr
Pm
A52 variable
Pre_heat
hyhy
Bp
0%
OFF
ON
A0=1
Fig. 12.c
St
Pm
P0
Steam_Pr
P1
hy
A52 variable
Fig. 12.d
P7
Pm
P0
Steam_Pr_Lim
P8
P8/10
A53 variable
Fig. 12.e
Legend: Steam_pr = steam production, Pre_heat _= pre-heating, Steam_Pr_Lim =
steam production limit