KSB Calio SI Dual Installation & Operating Manual page 35

7 Operation
7.2.6.1 Operation controlled by PWM profile A (heating 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
Table 17: Parameters sent by external control system
Parameter
Maximum speed
Pump ID
Modulation
Stand-by
0
0 10 20 30 40
Fig. 11: 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. 12: PWM profile A, PWM signal from pump control system to external control
system
H Head
Calio SI Dual / Calio SI Therm
PWM signal
[%]
0 - 5
95 - 100
5 - 90
92 - 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:
The pump set is operated at
maximum speed.
-
-
The pump set can also be
controlled when in stand-by
mode.
35 of 50