When fr equ en cy source is chosen to be PID, i.e. F0.0 3 is c hose n t o be 5, these gro up fun c tions are a ctive.
This parameteris t o determine the assignment channelof the pro cess PID t argetvalue.
The set target valueof pro cess PID i s a relative va lue , and the set 100%i s corresponding to the 100%
fee dback signal of the systembe ing controlled.
The system a lway sperformsthe calcul ation ac cording to rela tive value (0-100%)
No te : If mult is tag e inp u t, it c an be accomp l ished by mean s of se tt ing F4 g roupparameters .
When F4.08=0 is chos en, i .e. th e target s ou rce i s the k e yboard, it is r equired to set this param eter.
The reference valueofthis parameter is the system feedbackvalue.
The P ID feedbackchanneli schosenby this parame ter.
Important: T he assignmentchannel and feedback channelcan not be in coincidence, otherwise PID i s
unableto controleffectively.
PID output i s positive cha rac teristic: when the feedbacksignal is bigger tha nthe PID givensi gnal, it
i sre quiredfor theinverter output frequency to decrease t oc ounterba lance the P ID,for i nstanc e,t he
windingt ension PID control.
PID output i s negative characteristic: whent hefeedba ck s ignal is bigger t han the PID giver signal,it
i sre quiredfor theinverter output frequency to increase t oc ounterbalance the PID,for instance, the
unreeling tensionP ID control.
F4. 19 0.0 % 100.0%
～
0.0 %
P reset PID set point
Fu nction
Code
Name
Setting Rang e
Default
Value
P ID Feed back
Sources Option
F4.2 0
0Reserved
：
1 AI F eedback
：
2Reserved
：
3 Communi cation feedb ack
：
0
Fu nction
Code
Name
Setting Rang e
Default
Value
F4.21
P ID Out put C h aract eristics
Opt ion
0positive
：
1 neg ative
：
0
Fu nction
Code
Name
Setting Rang e
Default
Value
F4.22
P roport ional gai n ( Kp )
0.00 99.99
～
1.00
F4.2 3
I ntegr al tim e (T i)
0.01 10.00 s
～
0.10s
F4. 24
Differential time (Td)
0.00 10.00 s
～
0.00s
Fu nction
Code
Name
Setting Rang e
Default
Value
Chapter 6 Parameter D escripti on
DZB Series
-60-
Th is function is to set up t he in itiat ive bus voltage of dynamicbraking, andprope rly regulating thi s
val ue can resu lt in aneffectivebrake tothe load.
Speed=120 running fre quency F4.17/pole number
Th is function is usedto calibrat e speed displayerror, it has no i mpacton actual speed.
××
PIDc ontrol is one meth od n orma lly us ed to process control, ho ld ing the cont rol val u e to the target
val ue by thenegative feedback system which regulates the inverter output f requency by me ans of
prop ortion, i ntegration and differentialoperationson the difference between th e control value feedback
signal and th e targetva lue signal. I t is applica ble t othe process controlssuch as f low control, pressure
cont roland temperature control and so on.The control functi onal block diagrami s shownasfollows:
Fig.6-18P rocess PID Functi onal Block D iagram
M
F
P
Give n Value
( P erc e ntage)
PID Control
Output F
Fe edback Va l u e
(Percentage)
Filt er
Funct ion
Code
Nam e
SettingRange
Default
Valu e
F4.16
Brake T hres hold
Va lue Voltage
115 .0 140. 0%(s tandar d D C bu s
voltage) 380V
～
130.0%
115 .0 140. 0%(s tandar d D C bu s
voltage) 220V
～
120.0%
F4.17
Spe ed displ ay
rat io
0.1 999 .9 %
Speed=120 ru nning
frequency F4.17/po le n um be r
～
×
×
100.0%
Funct ion
Code
Nam e
SettingRange
Default
Valu e
F4.18
PID se tpoi nt
Sources Option
0 Giv en by Keyb oard( F4.19)
：
1 Giv en by panel po t entiom ete r V I
：
2 Giv en ex terna l terminal AI
：
3 Giv en by Remote
Communication
：
4 Mu lti-s eg s etpoint
：
0
Funct ion
Code
Nam e
SettingRange
Default
Valu e
Chapter 6 Parameter Descr iption
DZB S eri es
-59-
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