Overshoot Suppression Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

1.37

Overshoot Suppression Function

This function suppresses overshoots at the startup and the set value (SV) change.
Measured
temperature [ ]
Setting "Fast" for "Control Response Parameters" of "Control basic parameters" in "Application Setting" with the overshoot
suppression function enables the fast temperature rise.
Ex.
The following shows an example of temperature changes of when "Slow," "Normal," or "Fast" has been set for "Control
Response Parameters" of "Control basic parameters" in "Application Setting."
Temperature process value (PV)
Set value (SV) 2
Change
Set value (SV) 1
Operating conditions
When all of the following conditions are satisfied, the overshoot suppression function can be executed.
• The value set in "Overshoot control level setting" of "Overshoot control function" in "Application Setting" is 1 or more.
• The module is during control operation.
• The module is not during auto tuning operation.
• The proportional band (P) is not 0.
• The integral time (I) is not 0.
• The value is within the temperature measuring range.
• 'CH1 AUTO/MAN mode shift' (Un\G518) is AUTO (0).
• The module is not during self-tuning operation.
• The module is not using the simultaneous temperature rise function.
• The module is not using the setting variation rate limiter setting function.
Suppression level:
Lower
Suppression level:
Higher
Time [s]
Fast
Set value (SV) change point
Normal
Slow
Time
1.37 Overshoot Suppression Function
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