Start Threshold - Veichi Electric AC60 series Manual

H-24

Start threshold

H-25 Dormancy
threshold
Start threshold: After the frequency inverter enters dormant state, PID
feedback quantity must be lower than the start threshold. Frequency inverter
can restart again; If the start threshold is set too high, the frequency
inverter maybe frequently start and stop; If it is too low, there will be
under-voltage fault. This parameter is defined as percentage of the largest
range of the sensor that the PID feedback quantity accounts for.
Dormancy threshold: It is used to adjust the standard of system dormancy while
no use(while no water in water supply system). Namely, inverter carries out
dormancy detection anytime. When it detects that PID feedback quantity is
higher than or equal to the dormant threshold and stand by the setting value
for a while, frequency inverter will start dormancy detection. In the dormancy
detection process, if the feedback is higher than the dormancy threshold, the
output frequency will be reduced to lower limit slowly and wait for while, then
reduces to 0. It enters the dormancy state. If the feedback is lower theat the
dormancy threshold, the dormancy detection is over. The inverter enter PID
adjust state. The lower parameter setting, the more easily the system enters
the dormancy state. When this parameter is set as 100.0%, system will not enter
dormancy state. This parameter is defined as percentage of the largest range
of the sensor that the PID feedback quantity accounts for. It is only valid
in constant voltage PID control.
Range:0.0%～sleep threshold
Range: start threshold～
100.0%
139
Factory
setting：0.0%
Factory
setting：100.0%