Mitsubishi Electric FR-A820-00046 Instruction Manual page 720

(A) Application parameters
Setting multiple PID functions
● When the second PID function is set, two sets of PID functions can be switched for use. The PID
setting is selected as shown in the table below.
Pr.128 setting
(First PID setting)
"0" or not applied to the
frequency
"0" or not applied to the
frequency
Applied to the frequency
Applied to the frequency
Dancer control
Tab. 5-227: Selection of PID settings
While Pr. 155 = "0", the second function is enabled immediately after RT signal turns ON. While
Pr. 155 = "10", the second function is enabled only during constant speed operation when RT signal
turns ON.
When dancer control is selected, the setting is not applied to the frequency.
5 - 540
Pr. 753 setting
(Second PID setting)
"0" or not applied to the
frequency
Applied to the frequency
"0" or not applied to the
frequency
Applied to the frequency
Not applied to the frequency
Pr.155
PID setting applied to the
RT signal
output frequency
setting
Control other than PID
⎯ ⎯
control
⎯ ⎯
Second PID setting
⎯ ⎯
First PID setting
OFF First PID setting
0
ON Second PID setting
⎯
10 First PID setting
⎯ ⎯
Dancer control
Parameters