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Valve outputs | Channel-independent functions
The actuator only outputs the ON telegram to the pump after determination when the
defined delay time has elapsed. The pump is not switched on when the actuator de-
termines within the preset time that the pump must remain switched off, due to a lim-
iting value plus hysteresis again being undershot.
The actuator only outputs the OFF telegram to the pump after determination when
the defined delay time has elapsed. The pump is not switched on when the actuator
determines within the preset time that the pump must remain switched off, due to a
limiting value again being exceeded.
The delay times of the pump controller can be used as an example to match the run-
ning time of the pump to the reaction time of the actuated actuators. Thus, a pump
should only switch on when the actuators actually open after electrical activation by
the actuator (match pump ACTIVE delay with the dead time of the actuators). The
same applies to the closing of the valve drives.
If pump control is enabled, optional cyclical anti-sticking protection can prevent the
sticking of the pump, if it has not been switched on by the command value evaluation
for a longer period of time (e.g. in the case of heating systems in the summer
months). When anti-sticking protection is enabled, the parameter "Cyclical switching
on" defines the weekly interval of the protection function. If the pump is not switched
on at least once during the set time by the pump controller, then the actuator will ex-
ecute anti-sticking protection, if necessary on a regular basis. The cycle time is reset
and restarted on each actuation of the pump by the pump control. The cycle time is
started for the first time after a device reset.
When anti-sticking protection is enabled, the parameter "Switch-on time" defines how
long the pump should run for the cyclical protection function. The actuator then
switches the pump on for the set time without interruption, assuming that anti-sticking
protection must be executed.
Enabling and configuring the pump control function
The "Pump control" function must first be enabled on the parameter page "General
valve outputs" so that it can be used during actuator operation. The remaining para-
meters are set on the parameter page "Pump control". Additionally, the parameter
pages of the individual valve outputs are relevant.
￭
Configure the parameter "Object polarity" to the required telegram polarity. In
addition, define the minimum command value and hysteresis.
Pump control is activated. The pump is switched on according to the set tele-
gram polarity if at least one command value of the assigned valve outputs ex-
ceeds the configured minimum command value plus hysteresis. The pump is
switched off when the minimum command value is reached or undershot
again.
The valve outputs must be assigned to the pump control individually on the
parameter pages "VOx - General -> Assignments" so that they are included in
the command value evaluation.
￭
Deactivate the parameter "Pump control".
Pump control is not available.
Heating actuator 6-gang with controller | Order no. 2139 00 | 21393100
Page 46 of 257
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