Omron VARISPEED E7 User Manual page 247

PI Control Methods
There are two PI control methods. Select the method by setting parameter b5-01.
Set Value
0
1
3
When the PI control is enabled (b5-01=1 or 3) further changes to other parameter settings occur automatically.
Following parameters change their Access Level to Quick Access Level:
Parameter Number
Following parameters change their Default Setting:
Parameter Number
PI Input Methods
PI Target Value Input Methods
Normally, the frequency reference selected in b1-01 is the PI target value, the PI target value can also be set as
shown in the following table.
PI Target Input Method
MEMOBUS register 0006H
Parameter setting
NOTE
6-90
PI control disabled
PI output becomes directly the Inverter output frequency.
PI output is added to the frequency reference as compensation value of the Inverter output frequency.
H3-08 Analog input A2 signal level selection
H3-09 Analog input A2 function selection
H3-13 Terminal A1/A2 switching
b5-31 PI unit selection
b5-02 Proportional (P) gain
b5-03 Integral (I) time
H3-09 Analog input A2 function selection
Set MEMOBUS bit 1 in register address 000FH to 1 (enable/disable PI target value
from communications) to be able to use register number 0006H as the PI target value.
If b5-18 is set to 1 the value in b5-19 becomes the PI target value.
If the PI function is used the frequency reference value becomes the target value, which is set and shown
in Hz on the operator. Nevertheless, internally the PI target value is used in percent. I.e. the following for-
mula is used:
frequency reference [Hz]
PI target value [%] =
max. output frequency [Hz]
Control Method
Name
Name
Setting Conditions
• 100%
Access Level
Q
Q
Q
Q
Q
Q
Default Setting
B