Grundfos RSI - Page 123

8.1.18 Group 3.22: Solar
Group 3.22.1: Start Settings
Code Parameter Min Max Unit Default ID Description
P3.22.1.1 Start DC voltage
P3.22.2.16
+ 5 V
1100 V Varies 1916
DV voltage threshold level
to activate Run enable
P3.22.1.2 Short restart delay 0.1 5.0 m 1.0 1917 Delay time to restart
P3.22.1.3 Short restart delay tries 1 10 5 1918 Number of restart tries
P3.22.1.4 Long restart delay 6.0 30.0 m 10.0 1919 Long delay time to restart
P3.22.1.5 Sleep in solar mode Disabled Enabled Disabled 1964
0 = Sleep disabled
1 = Sleep according to
P3.13.5.1 and P3.13.5.2
Sleep in solar mode can be managed
according to P3.13.5.1 and P3.13.5.2.
When P3.22.1.5 =1, the drive will stop if
the output frequency is below the value in
P3.13.5.1, for the time in P3.13.5.2. It will
restart as after a stop due to low power.
Sleep function allows to program a
minimum frequency P3.3.1.1 that is below
the efficient range of the pump. MPPT can
reach this low value, leading to a minimum
output power and avoiding to stop the
drive in case of temporary reduced
irradiation. If the condition persists, sleep
logic will then stop the drive.
Group 3.22.2: MPPT
Code Parameter Min Max Unit Default ID Description
P3.22.2.1 Vmp at 100 % power
P3.22.
2.16 +
5 V
1100 V Varies 1920
P3.22.2.2 Vmp at 10 % power
P3.22.
2.16 +
5 V
1100 V Varies 1921
P.14.2.3 Panel/Motor power ratio 50.00 100.00 % 100.00 1922
P3.22.2.4 P gain 0.000 1.000 0.050 1923
Gain for internal PI regulator. The
internal frequency reference keeps
the panels working on MPP.
P3.22.2.5 I gain 0.000 1.000 0.050 1924 Integration time.
P3.22.2.6 Acceleration time 0.1 60.0 s 1.0 1925
Time from minimum to maximum
frequency
P3.22.2.7 Deceleration time 0.1 60.0 s 1.0 1926
Time from maximum to minimum
frequency
P3.22.2.8 P&O update time 2 6 s 3 1939
P3.22.2.9 P&O voltage step 3 10 V 5 1940
P3.22.2.10 P&O power variation 0.2 5.0 % 1.0 1941
P3.22.2.11 P&O local max volt step 20 60 V 30 1945
P3.22.2.12 P&O local max time 1 60 m 10 1946
P3.22.2.13 P&O local max freq 0.00 20.00 Hz 10.00 1947
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