5.5 PID Group(G.PID)
Press SET/ENT Key to select PID Group after press ▲ or ▼ Key in Menu
display
The parameter to set deviation width to prevent overshoot.
When the control output reaches High-Limited value, for preventing Overshoot
by integral action, it is stop ordinary action for integrals and shift for ARW(Anti-
Reset Wind-Up). When the setting of ‘ARW’ is ‘AUTO’, it is acting
automatically. Other setting is acting by setting value.
The parameter to select the use of ‘Fuzzy’ function.
The function can be effective suppressing overshoot and reducing load
variation that may occur when PV reaches SP.
(Refer to ‘Fig 5 Overshoot suppressing by Fuzzy function’)
The parameter to set the number of PID Group to be acting one of two PID
parameter when relative parameter sets.
The parameter to set the proportional operation for PID control.
Setting range of ‘1.P’ is ‘0.1(H/C TYPE : 0.0) ~ 999.9%’.
Its initial setting is ’10.0%’.
(Fig 5 Overshoot suppressing by Fuzzy function)
SP
PV : FUZZY OFF
PV : FUZZY ON
G.AT ↔ G.SP ↔
↔ PWD ↔ G.CTL ↔ G.IN
↑ ↕
G.COM ↔ G.RET ↔ G.ALM ↔ G.OUT
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▼
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※ PID Group is SKIP in ON/OFF Mode.
Set D.DV or D.PV as PROG mode in PID control.
If you select the D.DV on the control mode, overshoot is small but it take a
long time for reaching the TSP because the MV variation rate is low. Selecting
the D.PV, overshoot is big but it is faster than the D.DV for reaching the TSP
because the MV variation rate is high.
