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110
3. OPERATION AND FUNCTION
Speed control
In the Speed adjustment channel, the speed control for the output can be activated or deacti-
vated respectively. If Yes is selected, the channels Min., Max. and Adapter will appear.
In the Min. adjustment channel, a relative minimum speed for a pump connected can be allo-
cated to the output
In the Max. adjustment channel, a relative maximum speed for a pump connected can be
allocated to the output.
If the speed control signal is generated via a VBus
option has to be activated. If Yes is selected, the relay will switch on or off (no burst control).
Speed information will be transmitted via the VBus
For functions controlling loads which are not speed controlled, the speed control will not be
shown on the display (e.g. the bypass type valve, mixer).
If the temperature difference reaches or exceeds the switch-on temperature difference, the
pump switches on at 100 % speed for 10 s. Then, the speed is reduced to the minimum pump
speed value. If the temperature difference exceeds the adjusted set value by 1/10 of the rise val-
ue, the pump speed increases by one step (1 %). The response of the controller can be adapted
via the parameter Rise. Each time the difference increases by 1/10 of the adjustable rise value,
the pump speed increases by one step until the maximum pump speed of 100% is reached. If
the temperature difference decreases by 1/10 of the adjustable rise value, pump speed will be
decreased by one step.
100
90
80
70
60
50
40
30
20
10
0
0
1
2
3
40
39
38
37
36
35
34
33
32
31
30
6,0
6,1
6,2
Temperature difference collector – store [K]
/ PWM interface adapter, the Adapter
®
®
.
4
5
6
7
Detail
6,3
6,4
6,5
Temperaturdifferenz Kollektor – Speicher [K]
8
9
10
11
Temperature difference
6,6
6,7
6,8
6,9
12
7
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