BINDER KBF LQC 240 - Manual (Page 52)

KBF LQC (E5.3) 07/2014 page 52/114
Time course of the subroutines:
When starting the overall program, both subroutines (TP-Program 1 and TP-Program 2) run off synchro-
nously. They should be of the same duration because each of the subroutines becomes inactive after
run-off (i.e., no heating or refrigeration and 50% fan speed after ZP 1 is completed, no humidification after
ZP 2 is completed). When the whole program is finished, the controller changes to Idle Mode. Tempera-
ture and humidity proceed towards ambient values.
Entering the set point values when operating without illumination:
Adapt the setting of the humidity set-point according to the table in chap. 8.2.
Performance after completing the program:
The controller changes to Idle Mode. Heating, refrigeration, and humidification are inactive; the chamber
approximates ambient temperature. The fan turns at 50% rate.
10.4 Selecting between set-point ramp and set-point step
Set-points always refer to the start of a program section, i.e., at the beginning of each program section
the entered set-point is targeted. During program section operation, the temperature or humidity gradually
passes to the set-point entered for the following program section.
By appropriate design of the program section timing, you can program all kinds of temperature and hu-
midity transitions:
•
Gradual temperature / humidity changes “set-point ramp”
The set-point gradually moves from one set-point to the one of the following program section during a
given interval. The actual temperature or humidity value (X) follows the continually moving set-point
(W) at any moment.
• Program sections with constant temperature / humidity
The initial values of two subsequent program sections are identical; so the temperature or humidity
remains constant during the whole time of the first program section.
• Sudden temperature / humidity changes “set-point step”
Steps are temperature or humidity changes (ramps) that occur during a very short interval. A section
with a different set-point follows two program sections with an identical set-point. If the duration of this
transitional program section is very short (minimum entry 1 sec), the temperature or humidity change
will proceed rapidly in the possible minimum time.
Figure 18: Possible temperature or humidity transitions
The following chapter shows examples of programming a set-point ramp and a set-point step.
01 02 04
05
06
07
08 09
W
t