Alarm And Key Tone (Beep) - IKA ICC basic Operating Instructions Manual

Fluid type (FLUI):
The chosen fluid (No�) of the temperature setting is limited�
See Section "Fluids"�
Temperature control type (AUTO):
AUTO 1:
AUTO 1 is the default setting� The optimum settings are
determined automatically�
Heat-up curve in auto-tuning control (AUTO 1):
°C
Fig. 5
AUTO 0:
For special requirements, AUTO 0 can be used with manu-
al adjustment of the control parameters�
If the PID control (AUTO 0) option is selected, the follow-
ing items including Kp 1, Ti 1 and Td 1 could be set� Oth-
erwise they are not displayed in the menu list�
Note: Inappropriate settings may produce the following
heat-up curves:
°C
°C
°C
t
Kp too high
t
Ti too low
t
Kp too low
Ti too high
t
°C
Fig. 6
Proportional coefficient of PID (Kp 1):
The proportional coefficient Kp is the controller amplifica-
tion and determines how strongly the control deviation
(the difference between the target temperature and actual
temperature) directly affects the control variable (on-time
of the heater)� Kp values that are too large can lead to the
controller overshooting�
Integral time of PID (Ti 1):
The integral time Ti (s) is the correction time and deter-
mines how strongly the duration of the control deviation
affects the control variable� Ti compensates an existing
control deviation� A high Ti means a smaller and slower
effect on the control variable� Ti values that are too small
can lead to instability of the controller�
Differential time of PID (Td 1):
The differential time Td (s) is the derivative time and de-
termines how strongly the rate of change of the control
deviation affects the control variable� Td compensates for
rapid control deviations� A high Td means a smaller and
slower effect on the control variable� Td values that are
too small can lead to instability of the controller�

Alarm and key tone (BEEP):

BEEP 0: no alarm and key tone
BEEP 1: alarm and key tone is activated
Td too high
t
12