Fig.6-15 specified value and expected feedback value
When the system is determined,basic steps for setting closed-loop parameter are as
follows:
(1) determine closed-loop provision and feedback channel(F3.01, F3.02)
(2) need to set relation between closed-loop provision and feedback for analog
closed-loop (F3.04~F3.07)
(3) set closed-loop presetting frequency function (F3.14, F3.15)
(4) set closed-loop proportion gain, integral gain, differential gain, sampling cycle,
error limit (F3.08~F3.12)
F3.00
Closed-loop run control selection
0: closed-loop run control ineffective
1: PID closed-loop run control effective
2:constant pressure water supply PID control specialized (one tows one)
F3.00=1, when ordinary PID regulation, the deviation is within deviation
limitation, no PID caculation, keep the stable output.
F3.00=2, constant pressure regulation, the deviation is within deviation
limitation and running frequency is above the sleep mode frequency, it runs for
energy saving, the output frequency descend runnig at 3HZ/Min. When the deviation
is within deviation limitation and running frequency is below or equal to sleep mode
frequency, after the time of sleep delay, the frequency will go down to 0HZ to run,
and the inverter will be sleep mode. When feedback pressure less than revive
pressure, afer the time of revive delay, the inverter will run according to PID
regulation.
F3.01
Provision channel selection
0: digital provision.
1: VCI analog 0-10V voltage provision
2: CCI analog provision. Can choose 0~10V voltage or 4~20mA current
provision
3: keypad analog potentiometer provision
F3.02
Feedback channel selection
0: VCI analog input voltage 0-10V
EDS800 series Service Manual
Expected feedbck value
20mA
4mA
0
specified value
10V
Range:0, 1, 2
Range:0~3
Range:0~6
69
0
0
0
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