Fuji Electric FRENIC-AQUA series, User Manual

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„ Slow flowrate stop function (Operation level) (J150, J250)
Select an operation level to be used as the slow flowrate stop condition. Set PID control 1 and
PID control 2 with function codes J150 and J250 respectively.
- Data setting range: See the table below.
Data for J149
and J249
Setting range for
J150 and J250
Remarks
1, 11, 21 Automatically calculates the best value from the
maximum frequency (F03)
2, 12, 22
Auto
Automatically calculates the best value from SV
1, 11, 21 0.0 to 120.0 Hz Setting with a frequency
2, 12, 22 0.00 to 9990.00 Setting with physical quantity
PID control 1: display unit (J105), scale (J106, J107)
PID control 2: display unit (J205), scale (J206, J207)
(Setting range is limited by maximum scale and
minimum scale.)
„ Slow flowrate stop function (Elapsed time) (J151, J251)
Set time delay from PID output's satisfaction of the stop conditions specified with Mode
selection (J149, J249) and operation level (J150, J250) until the inverter starts to decelerate
and stop. Set PID control 1 and PID control 2 with function codes J151 and J251 respectively.
- Data setting range: 0 to 60 (s)
„ Slow flowrate stop function (Auto-operation frequency lower-limit) (J152)
J152 specifies the lower limit of the stop judgment level (output frequency) to be recorded by
shutoff operation when J149 = 11 or 21.
- Data setting range: 0.0 to 120.0 (Hz)
„ Slow flowrate stop function (Pressurization starting frequency) (J153)
- Data setting range: 0.0 to 120.0 (Hz)
„ Slow flowrate stop function (Pressurizing time) (J154)
- Data setting range: 0 to 60 (s)
Specifying J153 (Pressurization starting frequency) and J154 (Pressurizing time) enables
pressurization control when the frequency drops below the level specified by J149 (Stop
frequency for slow flowrate) for the period specified by J151. During the pressurization, PID
control is in the hold state.
This function prolongs the stopping time of equipment with a bladder tank by pressurizing
immediately before the frequency drops below the level at which the inverter stops the motor,
thus enabling energy saving operation.
Because the pressurization starting frequency (J153) can be specified with a parameter,
pressurization setting suitable for the equipment is possible.