INVT SP100 Series User Manual page 71

SP100 series solar pump inverter
The empty-water protection function is mainly used for the water source or well. When the
water level is lower than the low water level warning line, after P15.16, the solar pump will
report the empty-water pre-alarm and decelerate to stop.
The following figure shows the function diagram when P15.11=0 (digital input).
In case of the empty-water pre-alarm, if the water level drops below the high water level
warning line, the pre-alarm will be cleared automatically after P15.15, and the machine will
restart.
In case of the empty-water pre-alarm, if the water level goes higher than the low water level
warning line, the pre-alarm will be cleared automatically after P15.17, and the machine will
restart.
Function
code
Water level control
P15.11
selection
Full-water level
P15.12
threshold
Empty-water level
P15.13
threshold
Full-water level
P15.14
Full-water level
P15.15
wake-up delay
202501 (V1.1)
Low
water
level
Well
Name
Setting range: 0 – 1
0: Control through digital input
1: Control through AI1 input
Setting range: 0.0% – P15.13
Setting range: P15.12 – 100.0%
Time setting on full-water level delay. This
parameter is still valid for digital full-water
delay signal.
Setting range: 0 – 10000s
Time setting on full-water level wake-up
delay. This parameter is still valid for digital
High
water
level
Reservoir
Description
Commissioning
S2
S3
SP100
COM
Default
0
25.0%
75.0%
5s
20s
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