Som 9s, R1 s2 s1 – STIEBEL ELTRON SOM 9s User Manual
Page 68
Advertising
© Stiebel 11091_SOM_9s.mon
us.ind
d
| 68
SOM 9s
Electrical connection of a high-efficiency pump (HE pump)
Speed control of a HE pump is possible via a PWM signal.
For this purpose, the pump has to be connected to the relay
as well as to one of the PWM outputs of the controller (see
page 4). In the PUMP adjustment channel one of the
PWM control types has to be selected.
note:
For more information about pump control, see
page 79.
R1
S2
S1
Temp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM
1
PWM
2
N
R4
V40
L'
VFS
RPS
out
in
Advertising