Lamtec VMS 4 - Page 32

31
5 Firing Rate Controller (optional)
Fig. 5-6 Controller operation with I-term too high
Fig. 5-7 Controller operation with D-term too high
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
Characteristic Control Process Control Mode Start-up Procedure