Grundfos RSI - Page 138

8.2.4 References
P3.3.1.1 MinFreqReference
Minimum frequency reference.
When drive is fed by solar power, if
available power is not sufficient to maintain
dc voltage above the minimum and
frequency above the minimum, the drive
will be stopped.
If motor current limit is reached, actual
output frequency might be lower than this
parameter. If this is not acceptable, stall
protection should be activated.
P3.3.1.2 MaxFreqReference
Maximum frequency reference.
8.2.5 Preset Freqs
P3.3.3.1 PresetFreqMode
You can use the preset frequency parameters to
define certain frequency references in advance.
These references are then applied by activating/
inactivating digital inputs connected to parameters
P3.3.3.10, P3.3.3.11 and P3.3.3.12 (Preset Freq
Sel0, Preset Freq Sel1 and Preset Freq Sel2). Two
different logics can be selected:
Selection
number
Selection name Note
0 Binary coded
Combine activated inputs according to the tables below to choose the
Preset frequency needed.
1 Number (of inputs used)
According to how many of the inputs assigned for Preset frequency
selections are active you can apply the Preset frequencies 1 to 3.
P3.3.3.2 Preset Freq 0, P3.3.3.3 Preset Freq 1,
P3.3.3.4 Preset Freq 2, P3.3.3.5 Preset Freq 3,
P3.3.3.6 Preset Freq 4, P3.3.3.7 Preset Freq 5,
P3.3.3.8 Preset Freq 6, P3.3.3.9 Preset Freq 7
Value "0" selected for parameter P3.3.3.1:
Preset frequency 0 can be chosen as reference by
selecting value 1 for parameter P3.3.1.5.
Other preset frequencies 1 to 7 are selected as
reference by dedicating digital inputs for parameters
P3.3.3.10, P3.3.3.11 and/or P3.3.3.12. Combinations
of active digital inputs determine the used preset
frequency according to the tables below.
The values of the preset frequencies are
automatically limited between the minimum and
maximum frequencies (P3.3.1.1 and P3.3.1.2). See
table below.
Preset Freq 0
Required action Activated frequency
Choose value 1 for parameter P3.3.1.5 Preset Freq 0
Preset frequencies 1 to 7
Activate digital input for parameter Activated frequency
P3.3.3.12 P3.3.3.11 P3.3.3.10 Preset Freq 1
P3.3.3.12 P3.3.3.11 P3.3.3.10 Preset Freq 2
P3.3.3.12 P3.3.3.11 P3.3.3.10 Preset Freq 3
P3.3.3.12 P3.3.3.11 P3.3.3.10 Preset Freq 4
P3.3.3.12 P3.3.3.11 P3.3.3.10 Preset Freq 5
P3.3.3.12 P3.3.3.11 P3.3.3.10 Preset Freq 6
P3.3.3.12 P3.3.3.11 P3.3.3.10 Preset Freq 7
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