α
2 Simple Application Controllers
Function Blocks 6
6 - 54
2) PID Operation when Auto-tuning was interrupted
3) Error Occurance
6.22.1 Parameter List and PID Details.
1.
Units of 0.1% are used for analog inputs, FB word outputs, and temperature inputs using a
Celsius scale.
2.
Units of 0.01% are used for temperature inputs using a Fahrenheit scale.
Table 6.24: List of the PID Parameters,
Parameter
Parameter Description
Range
Default
Unit
SV
Set Value
-32768 - 32767
0
PV
Process Value
-32768 - 32767
0
MV
Manipulated Value
0 - 4000
0
TS
Sampling time
1 - 32767
50
10 ms
KP
Proportional gain
1 - 32767
75
0.1%
1
0.01%
2
TI
Integration time
0 - 32767
40
100 ms
KD
Derivative gain
0 - 100
50
%
TD
Derivative time
0 - 32767
100
10 ms
α
f
Noise filter
0 - 99
50
%
ULV
Output upper limit value (ULV)
LLV - 4000
4000
LLV
Output lower limit value (LLV)
0 - ULV
0
AT Bias
Auto-tuning Bias
-32768 - 32767
0
Direction
Direction of operation
forward or reverse
reverse
C o n t r o l
Response
Control response parameter
fast, normal, slow
normal
PID control
after AT
PID control after auto-tuning
completes
P, PI, PID
PID
EN
AT
AT RUNNING
CLEAR
PID operation with
old parameters
PID operation
Clear
EN
ERROR
MV
Error occured
