Lamtec ETAMATIC - 8.2 Valve Leakage Test Procedures

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8 Control Mode

8.1 Aides for Setting

Fig. 8-1 Controller operation with P-term too high

Fig. 8-2 Controller operation with I-term too high

Fig. 8-3 Controller operation with D-term too high

Characteristic Control Process Control Mode Start-up Procedure

P term higher decrease of

attenuation

stronger reaction with

overshoot

faster start-up with

overshoot

P term smaller increase of

attenuation

less reaction, less ten-

dency to oscillate

slower startup

Characteristic Control Process Control Mode Start-up Procedure

I term higher decrease of atten-

uation

stronger reaction with

tendency to oscillate

faster start-up with ten-

dency to oscillate

I term smaller increase of attenu-

ation

less reaction, less ten-

dency to oscillate

slower start-up

Characteristic Control Process Control Mode Start-up Procedure

D term higher decrease of atten-

uation

stronger reaction slower start-up, earlier

decrease of power

D term smaller increase of attenu-

ation

less reaction faster start-up,

decrease of power

later

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