Burkert Type 8625 User Manual Page 29
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8625-2 Standard - 27
english
A PI controller has a proportional and an integral fraction (P and I fractions).
P fraction:
Function:
y = K
p
· x
d
K
p
is the proportionality index (amplification factor). It is the ratio of the controller
output range ∆Y to the proportional range ∆x
d
.
Characteristics:
A purely P controller works theoretically undamped, i.e. it is fast and hence
dynamically favourable. It has a residual control difference, i.e. it does not
completely eliminate the effects of disturbances and is thus relatively unfavourable
from a static viewpoint.
Characteristics of PI controllers
Characteristic and step response of the P fraction of a PI controller
Characteristic Step response
y
max
y
min
y
0
x
d
x
d
k
p
*x
d
Proportional range ∆x
d
Correcting range ∆y
- Operating Instructions 1
- Type 8625-2 1
- Standard 1
- CONTENTS 3
- 2 - 8625-2 Standard 4
- 1 GENERAL NOTES 5
- 1.1 Symbols 5
- 1.2 Safety notes 5
- 2 FUNCTIONS 7
- 3 APPLICATION AREA 8
- 5 COMMISSIONING 10
- 1 (brown)*4 (black) 12
- 3 (blue) 2 (white) 12
- 1 (brown) 12
- 4 (black) 12
- 3 (blue)* 12
- 3 (blue) 13
- 5.4 First commissioning 14
- 8625-2 15
- 6.1 Operating modes 15
- 6.3 Key allocation 17
- 6.4 Standard mode 18
- Display in manual mode 20
- 6.5 Manual mode 20
- 6.6 Configuration mode 21
- UNIT, MODE 22
- AMPL, INTG 22
- INV, ZERO 22
- STANDARD 23
- 22 - 8625-2 Standard 24
- (factory setting: °C) 24
- - setting the setpoint mode 25
- Standard signal 4 - 20 mA 26
- Standard signal 0 - 10 V 26
- 2 s set decimal point 27
- - setting the reset time T 28
- Correcting range ∆y 29
- (inverted control) 33
- - zero point switch-off 34
- - storing the values 37
- 6.7 Settings on delivery 38
- 7 ERROR MESSAGES 39
- 38 - 8625-2 Standard 40
- 8625-2 Standard - 39 41
- 40 - 8625-2 Standard 42
- 1 ALLGEMEINE HINWEISE 43
- 1.1 Darstellungsmittel 43
- 1.2 Sicherheitshinweise 43
- Aufladung 44
- 2 FUNKTION 45
- 3 EINSATZBEREICH 46
- 4 TECHNISCHE DATEN 47
- 5 INBETRIEBNAHME 48
- 5.4 Erstinbetriebnahme 52
- 6.1 Betriebsmodi 53
- 6.2 Anzeigen im Display 54
- 6.3 Tastenbelegung 55
- 6.4 Standardmodus 56
- Anzeige im Handmodus 58
- 6.5 Handmodus 58
- 6.6 Konfigurationsmodus 59
- 60 - 8625-2 Standard 62
- (Werkseinstellung °C) 62
- Erhöhen der Stelle 63
- Normsignal 4 - 20 mA 64
- Normsignal 0 - 10 V 64
- 2 s Dezimalpunkt setzen 65
- Erhöhen der Stelle 66
- Stellbereich ∆y 67
- Einstellregeln für PI-Regler 69
- Kühlen (invertierte Regelung) 71
- - Nullpunktabschaltung 72
- - Speichern der Werte 75
- 7 FEHLERMELDUNGEN 77
- 76 - 8625-2 Standard 78
- Table des matières 79
- 78 - 8625-2 Standard 80
- 1 INDICATIONS GENERALES 81
- 1.1 Symboles utilisés 81
- 1.2 Consignes de sécurité 81
- 2 FONCTION 83
- 3 CHAMP D'APPLICATION 84
- 4 CARACTERISTIQUES TECHNIQUES 85
- 5 MISE EN SERVICE 86
- 1 (brun) 89
- 4 (noir) 89
- 5.4 Premiére mise den service 90
- TYPE 8625-2 91
- 6.1 Modes opérationnels 91
- 6.3 Disposition des touches 93
- 6.4 Mode standard 94
- Affichage dans le mode manuel 96
- 6.5 Mode manuel 96
- 6.6 Mode de configuration 97
- 98 - 8625-2 Standard 100
- (réglage d’origine: °C) 100
- Consigne externe 101
- Figure: Source de consigne 101
- 4 - 20 mA 102
- 0 - 10 V 102
- Signal normalisé 102
- Augmentation de la 103
- Position suivante 103
- 2 s Pose du point décimal 103
- Pose du point décimal 104
- Gamme de réglage ∆y 105
- Gamme de réglage ∆y 106
- Type de régulatuer 108
- Réglage des paramètres 108
- - Fermeture au point zéro 110
- - Enregistrement des valeurs 113
- 6.7 Réglages d'origine 114
- 7 MESSAGES D'ERREUR 115
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