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REGULUS - STDC E Controller - www.regulus.eu
F 7.3 - Speed control R1
If the speed control is activated, the STDC E makes it possible to vary the speed of standard pumps at relay
by means of special internal electronics.
This function should only be activated by a specialist. Depending on the pump and pump stage
used, the minimum speed should not be set too low, because otherwise the pump or the system
may be damaged. The information provided by the relevant manufacturer must also be observed! If
in doubt, the min. speed and the pump stage should generally be set too high rather than too low.
F 7.3.1 - Speed control mode
Off:
There is no speed control. The connected pump is only switched on or off with full speed.
Mode V1:
Speed control set to
Δ
T, starts from the max. speed:
After the purging time (at max. speed) the controller switches to the set max. speed. If the temperature
difference
Δ
T between the reference sensors (collector and storage tank) is smaller than the set value, then
the speed is decreased by one step after the Sweep time expires. If the temperature difference between the
reference sensors is greater than the set value, then the speed is increased by one step after the Sweep time
expires. If the controller has adjusted the speed of the pump down to the smallest stage and the
Δ
T between
the reference sensors is below the desired
Δ
T off, the pump is switched off.
Mode V2:
Speed control set to
Δ
T, starts from the min. speed.
After the purging time (at min. speed) the controller switches to the set min. speed. If the temperature differ-
ence
Δ
T between the reference sensors (collector and storage tank) is greater than the set value, then the
speed is increased by one step after the Sweep time expires. If the temperature difference
Δ
T between the
reference sensors is below the set value, then the speed is decreased by one step after the Sweep time ex-
pires. If the controller has adjusted the speed of the pump down to the smallest stage and the
Δ
T between the
reference sensors is below the desired T
Δ
off, the pump is switched off.
Mode V3:
Speed control set to a constant collector temperature, starts from the min. speed.
After the purging time (at min. speed) the controller switches to the set min. speed. If the temperature at the
reference sensor (collector, in systems with heat exchanger on relay 2 the heat exchanger instead) is great-
er than the setpoint to be set subsequently, then the speed is increased by one step after the Sweep time
expires. If the temperature at the reference sensor (collector) is less than the setpoint to be set subsequently,
then the speed is decreased by one step after the Sweep time expires.
Setting range: V1,V2,V3, off/default setting: off
F 7.2.8.b - Technical data for PWM and 0-10V
PWM: 20% to 100%, 1kHz
Designed for a load of
10K Ohm
Technical data PWM:
Technical data 0-10V:
0-10V: 2V to 10V (20% to 100%)
Designed for a load of 10K Ohm.
10V = 100% Speed
5V = 50% Speed
2V = 20% Speed
0V = Off
Danger
