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2.3
VFD Grundfos Direct Sensor™
The controller is equipped with 1 input for a digital VFD Grundfos Direct Sensor™
for measuring the flow rate and the temperature. Connection is made at the VFD
terminal.
2.4
PWM outputs
Speed control of a HE pump is possible via a PWM signal. The pump has to be con-
nected to the relay as well as to one of the PWM outputs of the controller. Power
is supplied to the HE pump by switching the corresponding relay on or off.
The terminals marked PWM 1 / 2 are control outputs for pumps with PWM control
Made in Germany
input.
DeltaSol
CS Plus
®
1 = PWM output 1, control signal
PWM 1/2
2 = PWM output 1, GND
3 = PWM output 2, GND
4 = PWM output 2, control signal
1
2
3
4
Temp. Sensor Pt1000
VFD
S1
S2
S3
3 4 5 6 7 8 9 10
1 2
PWM 1/2
blue
brown
X
black (not
used)
PWM signal
cable
pump signal
input
8
IP 20
R1
1 (1) A 240 V~
1 (1) A 240 V~
R2
S4
VBus
12
N
blue
brown
yellow/green
230 V~ power
supply
pump power
supply
2.5
Data communication / Bus
The controller is equipped with the VBus
to external modules. The connection is to be carried out at the terminals marked
VBus (either polarity).
One or more VBus
®
modules can be connected via this data bus.
T2A
100 ... 240 V~
50-60 Hz
R1
N
L
18
19
20
N R2
N
13
14
15
16
17
for data transfer and energy supply
®
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