STIEBEL ELTRON SOM 10 - Manual (Page 75)

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75
16.4 PWM-Profiles
PWM A (e. g. manufacturer WILO)
PWM % 0 12 7 95 100
min
max
H
PWM B (e. g. manufacturer Grundfos)
100
90
80
70
60
50
40
30
20
10
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Solar PM Profile
PWM %
PWM C (e. g. manufacturer Laing)
20% No PWM
RPM
Max rpm
Min rpm
duty %
50%
Fin
Début
PWM D (e. g. manufacturer WILO)
PWM % 0 5 93 88 85 100
min
max
H
PWM E (e. g. manufacturer Grundfos)
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
0 10 20 30 40 50 60 70 80 90 100
OEM STANDARD PROFILE
OEM SOLAR PM-Profile
PWM_IN % PWM_IN 0 t/T [%]
Max Speed
Std PWM
PWM F (e. g. manufacturer Laing)
75% 80% No PWM
RPM
Max rpm
Min rpm
duty %
50%
Fin
Début
Note:
If PWM pumps are used, the lowest adjust-
ment value of the minimum speed cannot be
lower than 20 %. If a Laing pump (PWM C) is
used, the PWM start impulse has to be higher
than 25% to enable a minimum pump speed
of less than 25%.