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Valve outputs | Valve rinsing
Valve rinsing is not available.
Configuring cyclical valve rinsing
The actuator can perform valve rinsing cyclically, if necessary. When using the cyc-
lical valve rinsing, a rinse operation can be started automatically after a configurable
cycle time (1...26 weeks). Here too, the valve rinsing length configured in the ETS
defines the time for the once-only, complete opening and closing of the activated
valve drives. At the end of a rinsing operation, the actuator always restarts the cycle
time.
Valve rinsing must be enabled and a valid rinsing time configured.
￭
Set the "Cyclical valve rinsing" parameter to "yes". In the case of the "Repeat
all" parameter, configure how often valve rinsing is to be performed automatic-
ally.
Cyclical valve rinsing is enabled.
￭
Set the "Cyclical valve rinsing" parameter to "No".
Cyclical valve rinsing is completely disabled. Valve rinsing can only be started
by the communication object (if enabled).
Each ETS programming operation resets the cycle time. The first rinsing oper-
ation with cyclical valve rinsing takes place after an ETS programming opera-
tion after the first time cycle has elapsed.
If there is a bus voltage failure, the actuator saves the remaining residual time
of the current time cycle. The residual cycle time is restarted after bus voltage
return.
A bus voltage failure immediately interrupts an active rinsing operation. After
bus voltage return, a previously interrupted rinsing operation is not executed
again. The actuator then starts a new time cycle for cyclical valve rinsing.
Optionally, intelligent cyclical valve rinsing can be additionally activated. Here, valve
rinsing is only executed repeatedly, if, in the current time cycle, a minimum command
value limiting value, configurable in the ETS, was not exceeded. It the active com-
mand value exceeds the limiting value, then the actuator will stop the cycle time. The
actuator only restarts the cycle time if, in the further course of the command value
change, a command value of "0%" or "OFF" (completely closed) is set
(see figure 24). This prevents valve rinsing if the valve has already run through a suf-
ficiently defined stroke.
If, after exceeding the configured limiting value, the value was not completely closed
at least once (command value "0%" or "OFF"), then no further cyclical valve rinsing
will take place.
Use of the intelligent cyclical valve rinsing means that rinsing operations over the en-
tire valve stroke are only then used when this is sensible and actually required. For
example, in the summer months, the use of heating power is lower. In consequence,
the valves are activated less frequently by command values, meaning that valve rins-
ing should be performed as anti-sticking protection. In the winter months, it is fre-
Heating actuator 6-gang with controller | Order no. 2139 00 | 21393100
Page 107 of 257
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