Mitsubishi Electric MELSEC-Q/L Programming Manual page 740

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Integral time (T
Setting range: 0 to 32767 [100ms] (0 is treated as . (No integration))
PID control: integral operation
The time taken from when an error occurs in the integral operation to when the output of the integral operation becomes the
output of the proportional operation is called the integral time expressed in T
When T
is reduced, the integral operation becomes stronger.
I
Ex.
PI operation in heating (reverse action)
Temperature
SV
MV
Ex.
PI operation in cooling (direct action)
Temperature
T
I3
SV
MV
7 APPLICATION INSTRUCTIONS
738
7.18 PID Instruction
): (S3)+4
I
T
I3
T
T
I2
I1
Integral time
0 < T
Integral time
T
0 < T
I3
T
T
I2
I1
Integral time
0 < T
T
I3
I2
T
I1
Integral time (T
0 < T
I3
T
I3
T
T
I2
I1
PV by PI action
PV by P action
(T
)
I
< T
< T
I3
I2
I1
Time
(T
)
I
< T
< T
I3
I2
I1
Output by PI action
Output by P action
Time
(T
)
I
< T
< T
I2
I1
PV by P action
PV by PI action
Time
)
I
< T
< T
I2
I1
Output by PI action
Output by P action
Time
.
I

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