Mitsubishi Electric FR-F800, Instruction Manual

Page: 527 / 834

Parameters (A) Application parameters
FR-F800 5 - 365
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.
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 5-285 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.
Pr.128 setting
(First PID setting) Pr. 753 setting
(Second PID setting) Pr.155
setting
RT signal
PID setting applied to the
output frequency
"0" or not applied to the
frequency "0" or not applied to the
frequency
⎯ ⎯
Control other than PID
control
"0" or not applied to the
frequency
Applied to the frequency
⎯ ⎯
Second PID setting
Applied to the frequency
"0" or not applied to the
frequency
⎯ ⎯
First PID setting
Applied to the frequency Applied to the frequency
0
OFF First PID setting
ON Second PID setting
10
⎯
First PID setting
Tab. 5-177: Selection of PID settings
Classification
First PID function parameters Second PID function parameters
Pr. Name Pr. Name
Parameter
127
PID control automatic switchover
frequency
754
Second PID control automatic
switchover frequency
128 PID action selection 753 Second PID action selection
129 PID proportional band 756 Second PID proportional band
130 PID integral time 757 Second PID integral time
131 PID upper limit 1143 Second PID upper limit
132 PID lower limit 1144 Second PID lower limit
133 PID action set point 755 Second PID action set point
134 PID differential time 758 Second PID differential time
553 PID deviation limit 1145 Second PID deviation limit
554 PID signal operation selection 1146 Second PID signal operation selection
575
Output interruption detection
time
1147
Second output interruption detection
time
576
Output interruption detection
level
1148
Second output interruption detection
level
577 Output interruption cancel level 1149 Second output interruption cancel level
609
PID set point/deviation input
selection
1140
Second PID set point/deviation input
selection
610
PID measured value input
selection
1141
Second PID measured value input
selection
Tab. 5-178: Parameters for setting multiple PID functions