KSB Calio SI Dual Installation & Operating Manual page 37

7 Operation
7.2.6.2 Operation controlled by PWM profile C (solar applications)
PWM signals from the external control system to the pump control system
An external control system sends the following parameters:
▪ Pump ID
▪ Minimum and maximum speed
▪ Stand-by mode
Table 20: Parameters sent by external control system
Parameter
Maximum speed
Pump ID
Modulation
Stand-by
0
0 10 20 30 40
Fig. 13: PWM signal from external control system to pump control system
n Speed
PWM signals from the pump control system to the external control system
The pump set sends the following parameters:
▪ Pump ID
▪ Calculated flow rate [m
▪ Fault status for dry running and blocked rotor
100
90
80
70
60
50
40
30
20
10
0
0 10 20 30 40
Fig. 14: PWM profile C, PWM signal from the pump to the external control system
H Head
Calio SI Dual / Calio SI Therm
PWM signal
[%]
90 - 94
95 - 100
5 - 90
94 - 100
50 60 70 80 90 100
X [%]
X PWM
3
/h]
50 60 70 80 90 100
X [%]
X PWM
Comments
No PWM signal connected:
Pump set stops.
-
-
The pump set can also be
controlled when in stand-by
mode.
37 of 50