4-287
23- 53 Minimum Flow Stop Time of Feedback
Range
【0~255】Sec
When the warning signal of low flow occurs and flow feedback is lower than minimum flow limit, stop time
of low flow starts to count. If flow feedback is higher than minimum flow limit during counting time, the stop
time will recount and the inverter will display stop error signal of LObFt when the stop time ends.
Note: When user does not want the inverter to be restricted by the minimum flow, set 23-77=0 (disable) to
disable the function of low flow limit.
FB
time
23-47
Target Value of Flow
Meters
23-51
Minimum Flow Value of
Feedback
T1
T2 T3
Stop along the
Deceleration Time
(00-15)
F
Flow
Feedback
Output
LFPb
LOPbt
Figure 4.4.114 Diagram for low flow limited warning of stop
23- 77
Low Flow Setting
Range
【0】Disable
【1】Low Flow Warning
【2】Low Flow Warning or Error
When 23-77=0, Low flow warning or error is disabled.
When 23-77=1, Low flow warning is enabled. Low flow error is disabled.
When 23-77=2, Low flow warning or error is enabled. Refer to the instruction of Fig. 4.4.114.
23-54 Detection Function of Low Suction
Range
【0】: Disable
【1】: PID Error Value
【2】: Current
【3】: Current and PID Error Value
23- 55 Detection Time of Low Suction
Range
【0~30.0】Sec
23- 56 PID Error Level of Low Suction
Range
【0 ~ 30】%
23- 57 Current Level of Low Suction (Motor Rated Current)
Range
【0 ~ 100】%
23- 58 Reaction of Low Suction
T1 < (23-52): Recounting after T1.
T2 = (23-52): Keypad flashes and displays LFPb
T3 = (23-53): Keypad flashes and displays LOPbt
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