Mitsubishi Electric FX5 User Manual page 88
Melsec iq-f series
Hide thumbs
Also See for FX5:
- Programming manual (1112 pages) ,
- User manual (958 pages) ,
- Reference manual (44 pages)
Table of Contents
Advertisement
Auto-tuning procedure
1.
Transferring the output value for auto-tuning to the output value (d)
Set the output value for auto-tuning to the maximum available output value multiplied by 0.5 to 1 for the output equipment.
2.
Setting the parameter (s3), target value (SV), etc. that cannot be set in autotuning according to the system
3.
Set the auto-tuning execution flag to ON
Set the auto-tuning execution flag to ON (b4) in the operation setting parameter (ACT) (s3)+1.
4.
Set the PID instruction command input ON to start auto-tuning
Auto-tuning is executed according to the measured value (PV).
When auto-tuning is completed, the auto-tuning flag (b4) turns OFF in the operation setting parameter (ACT) (s3)+1.
Start auto-tuning while the system is stable.
If the system is unstable when auto-tuning is started, auto-tuning may not be executed normally.
Cautions on auto-tuning setting
Note that auto-tuning may not be executed normally if the cautions described below are not followed
• Difference between the target value (SV) and the measured value (PV)
If the difference between the target value (SV) and the measured value (PV) is less than 75 when autotuning is started, auto-
tuning is not executed normally. Accordingly, if the difference is less than 75, set the target value for auto-tuning. Set the target
value again when auto-tuning is completed.
• Sampling time (TS)
Make sure the sampling time is set for auto-tuning to 1 second (1000 ms) or more. It is recommended that the sampling time
is set to that it is considerably longer than the output change cycle.
Cautions on auto-tuning execution
■Program countermeasures when the input value (PV) does not change
When the input value (PV) does not change normally due to factors such as wire breakage in an analog input line, auto-tuning
is not finished. Detect and avoid such occurrences by introducing a sequence to monitor the input value or the elapsed time
from the start of auto-tuning.
10 PID CONTROL FUNCTION
86
10.7 Auto-Tuning
Advertisement
Table of Contents
Related Manuals for Mitsubishi Electric FX5
Related Products for Mitsubishi Electric FX5
- Mitsubishi Electric MELSEC iQ-F FX5U
- Mitsubishi Electric MELSEC iQ-F FX55-ASL-M
- Mitsubishi Electric MELSEC iQ-F FX5UC-96MT/D
- Mitsubishi Electric MELSEC iQ-F FX5UC-64MT/DSS
- Mitsubishi Electric MELSEC iQ-F FX5UC-32MT/D
- Mitsubishi Electric MELSEC iQ-F FX5UC-32MT/DSS
- Mitsubishi Electric MELSEC iQ-F FX5UC-96MT/DSS
- Mitsubishi Electric MELSEC iQ-F FX5UC-64MT/D
- Mitsubishi Electric MELSEC iQ-F FX5UC-32MT/DS-TS
- Mitsubishi Electric MELSEC iQ-F FX5UC-32MT/DSS-TS
- Mitsubishi Electric FX5-ENET
- Mitsubishi Electric FX5-DP-M
- Mitsubishi Electric MELSEC iQ-F FX5UC Series
- Mitsubishi Electric Melsec iQ-F FX5-C32EYT Series
- Mitsubishi Electric Melsec iQ-F FX5-C32ET TS Series
- Mitsubishi Electric Melsec iQ-F FX5-C16EYR/D-TS