Mitsubishi Electric FR-F820-00077 Instruction Manual page 543

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
Tab. 5-177: 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. (Refer to page 5-291 for the details.)
● The second PID function parameters and signals function in the same way as the following
parameters and signals of the first PID function. Refer to the first PID function when setting the
second PID functions.
Classification
Parameter
Tab. 5-178: Parameters for setting multiple PID functions
FR-F800
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
First PID function parameters
Pr. Name
PID control automatic switchover
127
frequency
128 PID action selection
129 PID proportional band
130 PID integral time
131 PID upper limit
132 PID lower limit
133 PID action set point
134 PID differential time
553 PID deviation limit
554 PID signal operation selection
Output interruption detection
575
time
Output interruption detection
576
level
577 Output interruption cancel level
PID set point/deviation input
609
selection
PID measured value input
610
selection
(A) Application parameters
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
Second PID function parameters
Pr. Name
Second PID control automatic
754
switchover frequency
753 Second PID action selection
756 Second PID proportional band
757 Second PID integral time
1143 Second PID upper limit
1144 Second PID lower limit
755 Second PID action set point
758 Second PID differential time
1145 Second PID deviation limit
1146 Second PID signal operation selection
Second output interruption detection
1147
time
Second output interruption detection
1148
level
1149 Second output interruption cancel level
Second PID set point/deviation input
1140
selection
Second PID measured value input
1141
selection
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