99
Event control
= If a set temperature event occurs, the speed control starts, thus keeping
a sensor constant.
If, for instance, S3 reaches 60°C (activation threshold), the collector should be kept at a
certain temperature. Maintaining a sensor then works as with absolute value control.
Example:
EC N31
E
vent
c
ontrol in
n
ormal operation, an event at sensor S
3
leads to a constant
level at sensor S
1
. (ex works = --)
Setting range: EC N12 to EC N65, EC I12 to EC I65)
EC -- = event control is disabled.
TVE 60
The
t
hreshold
v
alue for
e
vent control is
60
°C. At a temperature of 60°C at S3,
the speed control is activated. (ex works = 60°C)
Setting range: 0 to 99°C in increments of 1°C
DVE 10
The
d
esired
v
alue for
e
vent control is
10
°C. As soon as the event has
occurred, S1 is kept at 10°C. (ex works = 130°C)
Setting range: 0 to 199°C in increments of 1°C
The event control “overwrites” the speed results from other control methods. A set event
can thus block the control of absolute values or differences.
Example:
keeping the collector temperature at 50°C with the absolute value control is
blocked when the tank has already reached 60°C at the top = the fast provision of hot water
is complete and is now to be continued with full volume flow (and hence a lower temperature
but slightly better efficiency). To do so, a value that value automatically requires full speed
(such as S1 = 10°C) has to be entered as the new desired temperature in the event control.
