LS ELECTRIC LSLV-H100 Series, User Manual

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Learning Advanced Features
This function is used to prevent pump damage due to abrupt deceleration. When the pump
operation frequency reaches the valve ramp frequency (
AP2-38 Dec Valve Freq) while
decelerating rapidly based on the deceleration ramp time (set at AP2-42), it begins to slow
down the deceleration based on the deceleration valve ramp time (set at
AP2-39
DecValve
Time). Decelerating valve ramp operates when ADV-
24 (Freq Limit) is set to ‘1 (Yes)’.
Deceleration Valve Ramping Setting Details
The time set at AP2-39 refers to the absolute time that it takes for the pump to decelerate
from the frequency set at AP2-38 to the frequency limit set at ADV-25.
5.17 Load Tuning
Load tuning refers to an operation that detects the load applied to a specific section of the
inverter operation (current and voltage) and creates an ideal load curve for the under load
and pump clean operations. The two set points to define the section are user-definable, and
are set at 50% and 85% of the base frequency (DRV-18 Base Freq) by default. The load
tuning result values are saved at codes AP2-2
–AP2-10. These values are user definable as
ADV
24
Frequency limit
options
Limit Mode 0: No
0 No
-
1 Yes
25
Low Freq minimum
value Freq Limit
Lo
30.00
Start Freq
–
Max Freq
Hz
26
Low Freq maximum
value Freq Limit
Hi
60.00
Freq Limit Lo
–
Max Freq
Hz
Code Description
AP2-38 Dec
Valve Freq
Sets the start frequency where the slow deceleration begins in order to
prevent pump damage when the inverter stops. Decelerating valve
ramping is performed from the frequency set at AP2-38 to the frequency
limit set at ADV-25 (low frequency limit for pump operation).
AP2-39
DecValve Time Sets the time it takes to decelerate from the frequency set at AP2-38 to the
frequency limit set at ADV-25 (low frequency limit for pump operation).