EUTECH INSTRUMENTS ALPHA PH1000 PHORP CONTROLLERTRANSMITTER Manuale delle Istruzioni Scaricare il pdf (Pagina 38)

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12.4 Appendix 4

General Instructions Concerning Controller Setting

Xp

0%

50%

100% Yh

-Xw

+Xw

Xp

Prop. band Prop. band

SP 2

SP 1

MIN function MAX function

Control characteristic of P-Controller as proportional controller

Xp = 0

Xp = 0

0%

50%

100% Yh

-Xw

+Xw

SP 2SP 1

MIN function MAX function

Control characteristic of P-Controllers as limit value switch

Characteristics of Pulse Length and Pulse Frequency

Relay

ON

tON

tOFF

Pulse Length T

OFF

Time [s]

Controller signal of Pulse length controller

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