Binder APT.line M Series, Руководство по эксплуатации

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M 01/2009 page 30/61
9.2 Selecting between set-point ramp and set-point step
Temperature set-points always refer to the start of a program section, i.e., at the beginning of each pro-
gram section the entered temperature set-point is targeted. During program section operation, the tem-
perature 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 transi-
tions.
•
Gradual temperature changes “set-point ramp”
The temperature set-point gradually moves from one set-point to the one of the following program sec-
tion during a given interval. The actual temperature value (X) follows the continually moving set-point
(W) at any moment.
•
Program sections with constant temperature
The initial values of two subsequent program sections are identical; so the temperature remains con-
stant during the whole time of the first program section.
•
Sudden temperature changes “set-point step”
Steps are temperature changes (ramps) that occur during a very short interval. A section with a differ-
ent 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 change will proceed rapidly in
the possible minimum time.
01 02 03 04
05
06
07
08 09
W
t
Figure 8: Possible temperature transitions
The following chapter offers examples of programming a set-point ramp and a set-point step.
9.3 Program entry as set-point ramp or as set-point step
In order to avoid incorrect programming, we recommend plotting the temperature profile (chart template
in chap. 9.9) and entering the values into a table (templates in chap. 9.10).
The controller provides 8 operation lines that can be activated or de-activated for each program section.
Operating contact 1 is used to control the air flap position (ON = Air flap open, OFF = Air flap closed). The
other operation lines are non-functional.
The unit does not provide active refrigeration, but you can program defined cooling down ramps within
the range of possible cooling-down times , e.g. in order to avoid tension in the material.