Chapter 4 Description of Parameters | VFD-VJ
4-29
Over-pressure detection level
Control mode
VF FOCPG FOCPM
Factory setting: 230
Settings 0~400 Bar
When the pressure feedback exceeds this parameter setting, an “ovP over pressure” error message may
occur.
Firmware version 2.04 and above, maximum value 400Bar, the previous version’s maximum allowed value
is 250Bar.
Detecting time of pressure-overshoot
Control mode
VF FOCPG FOCPM
Factory setting: 0.01
Settings 0.0000~ 1.0000 sec
When the pressure feedback is larger than the level set at Pr.00-35 and over the time set at Pr.00-52, an
ovP (over-pressure) warning code will display.
Warning code: When Pr.00-35= 0, disable detection of pressure-overshoot.
Detection of disconnection of pressure feedback
Control mode
VF FOCPG FOCPM
Factory setting: 0
Settings 0: No function
1: Enable (only for the pressure feedback output signal within 1~5V and
4~20mA)
When this parameter is set as 1 and if the pressure feedback signal is below 1V or 4mA, an "PFbF pressure
feedback fault” error message may occur.
Pressure/flow control function selection
Control mode
VF FOCPG FOCPM
Factory setting: 0
Settings
Bit 0:
0: Switch the PI Gain according to the pressure feedback level and use single
speed bandwidth
1: Switch the PI Gain according to the multi-function input terminal
Bit 1:
0: No pressure/flow control switch
1: Switch between the pressure and flow control
Bit 2:
0: Use the old pressure overshoot suppression
1: Use the new pressure overshoot suppression
Bit3:
0: Switch the PI Gain and single speed bandwidth according to the pressure
feedback level.
1: Switch the PI Gain and speed bandwidth according to the pressure command.
When the Bit 0 of this parameter is set as 1, the PI Gain for the pressure can be switched in conjunction with
the multi-function input terminal
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