Delta HES Series Instructions For Use Manual page 71

Reserved
 Overpressure detection level
Control mode VF
Settings
 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.
 Overpressure Detection Time
VF
Control mode
Settings
 When Pr00-35=0, the overpressure detection is disable.
 Detection of disconnection of pressure feedback
Control mode VF
Settings
 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
Settings
 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
Pr. 03-00~03-02 d= 47
OFF
ON
OFF
 When the Bit 1 of this parameter is set as 1, the pressure feedback is lower than the pressure
stable region (please refer to the description of Parameter 00-26) so the flow control will be
performed. When it enters the pressure stable region, the pressure control will be performed.

Integration Time – Pressure Overshoot 1
Control mode VF
Settings

Level of the pressure overshoot
Control mode VF
Settings
 By using the factory setting 250 bar of the Pr00-08 Maximum Pressure Feedback, when the
pressure is over 5 bar (250*2%=5 bar), another integral time of Pr00-39 will do overshoot
protection.
FOCPG FOCPM
0~400 Bar
FOCPG FOCPM
0.0000~ 1.0000 sec
FOCPG FOCPM
0: No function
1: Enable (only for the pressure feedback output signal within 1~5V and
4~20mA)
FOCPG FOCPM
Bit 0:
0: Switch the PI Gain according to the pressure feedback level
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
Pr. 03-00~03-02 d= 48
OFF
OFF
ON
FOCPG FOCPM
0.00~500.00 seconds
FOCPG FOCPM
0~100%
Chapter 4 Parameter Functions
PI1(Parameters 00-20 & 00-21)
PI2(Parameters 00-22 & 00-23)
PI3(Parameters 00-24 & 00-25)
4-19
HES Series
Factory default: 230
Factory defualt: 0.01
Factory default: 0
Factory default: 0
Factory default : 0.2
Factory default : 2