Mitsubishi FR - S500 Instruction Manual page 111

Parameter Name
PID action
88
selection
PID proportional
89
band
90 PID integral time
91 PID upper limit
92 PID lower limit
PID action set
93 point for PU
operation
PID differential
94
time
<Setting>
(1) Basic PID control configuration
Pr. 93 or Treminal 2
Set point
Kp: Proportion constant
(2) PID action overview
1) PI action
A combination of proportional control
action (P) and integral control action (I)
for providing a manipulated variable in
response to deviation and changes
with time.
REMARKS
PI action is the sum of P and I actions.
Factory
Setting
20
0.1 to 999 %,
100%
0.1 to 999s,
1s
0 to 100%,
- - -
0 to 100%,
- - -
0% 0 to 100%
0.01 to 10s,
- - -
Inverter circuit :
+ -
Terminal 4
Feedback signal (Process value)
Ti: Integral time
Setting
Range
20, 21
- - -
- - -
- - - Setting is enabled when Pr. 30 = "1"
- - -
- - -
PID operation
1
Kp 1+
+Td S
Ti S
S: Operator
[Operation example for stepped
changes of process value]
Deviation Set point
P action
I action
PI action
102
Remarks
Motor
Manipulated
IM
variable
Td: Differential time
Process value
Time
Time
Time