Mitsubishi Electronics FX5 ユーザーズマニュアル
74
9 PID CONTROL FUNCTION
9.8 Examples of Program
9.8 Examples of Program
Program example 1
This is an example of the sample program for PID control.
Use device
The content of the devices used for the program is as follows.
: This is an item not occupied.
*1 The setting is always necessary.
*2 When CH1 is used.
*2 When CH1 is used.
Item
Device
Setting value
During auto-tuning
During PID control
Target value (SV)
(s1)
D500
Not used
5000 (50.0)
Measured value (PV)
(s2)
SD6022
Not used
According to input value
Parameter
Sampling time (TS)
(s3)
D510
Not used
500 (500 ms)
Operation setting
(ACT)
(ACT)
Operation direction
(s3)+1 b0
D511.0
Not used
1 (Backward operation)
Input variation alarm
(s3)+1 b1
D511.1
Not used
0 (Alarm is not provided)
Output variation alarm
(s3)+1 b2
D511.2
Not used
0 (Alarm is not provided)
Auto-tuning
(s3)+1 b4
D511.4
Not used
0 (AT is not provided)
Upper and lower limits of
output value
output value
(s3)+1 b5
D511.5
Not used
1 (Setting is provided)
Select auto-tuning mode
(s3)+1 b6
D511.6
Not used
Not used
Input filter constant (
)
(s3)+2
D512
Not used
0 (Input filter is not provided)
Proportional gain (KP)
(s3)+3
D513
Not used
3000 (3000 %)
Integral time (TI)
(s3)+4
D514
Not used
2000 (2000
100 ms)
Differential gain (KD)
(s3)+5
D515
Not used
0 (Differential gain is not
provided)
provided)
Differential time (TD)
(s3)+6
D516
Not used
5000 (5000
10 ms)
Input variation (incremental) alarm set value
(s3)+20
D530
Not used
Not used
Input variation (decremental) alarm set value
(s3)+21
D531
Not used
Not used
Output variation (incremental) alarm set value
Output upper limit set value
Output upper limit set value
(s3)+22
D532
Not used
2000 (2 second)
Output variation (decremental) alarm set value
Output lower limit set value
Output lower limit set value
(s3)+23
D533
Not used
0 (0 second)
Alarm output
Input variation (incremental) is
exceeded
exceeded
(s3)+24 b0
D534.0
Not used
Not used
Input variation (decremental)
is exceeded
is exceeded
(s3)+24 b1
D534.1
Not used
Not used
Output variation (incremental)
is exceeded
is exceeded
(s3)+24 b2
D534.2
Not used
Not used
Output variation (decremental)
is exceeded
is exceeded
(s3)+24 b3
D534.3
Not used
Not used
PV value threshold (hysteresis) width (SHPV)
(s3)+25
D535
Output value upper limit (ULV)
(s3)+26
D536
Output value lower limit (LLV)
(s3)+27
D537
Wait setting from end of tuning cycle to start of PID
control (KW)
control (KW)
(s3)+28
D538
Output value (MV)
(d)
D502
Not used
According to operation