MK (E3) 07/2009
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5.2
Operating modes
The program controller MB1 operates in 3 modes:
Idle Mode
The controller is not functional, i.e., there is no heating. The fan is operat-
ing. This may cause the unit to heat up until 70°C /
158°F.
Manual Mode
(Fixed value operation)
(HAND)
The controller operates as a fixed-point control, i.e., a temperature set-
point can be defined, which is then maintained (chap. 8).
Program Mode (AUTO)
An entered temperature program is run (chap. 9).
The program controller MB1 permits programming temperature cycles.
The controller offers 25 program memory positions with 100 program sections each. The total number of
program sections of all programs is limited to 500.
Programming can be done directly through the keypad of the controller or graphically through the soft-
ware APT-COM™ 3 DataControlSystem (option, chap. 14.1) specially developed by BINDER.
5.3
Behavior after power failure
After power return, the unit continues operating in the operating mode actual before power failure. In
Manual Mode (HAND), the controller regulates the temperature to the last entered set-points, while in
Program Mode (AUTO) it regulates the temperature to its set-point actually reached during program op-
eration. The power failure is noted in the event list (chap. 6.2). No error message is displayed indicating
that a power failure has taken place.
5.4
Behavior when opening the door
When you open the door, temperature control (heating and refrigeration) immediately stops (the com-
pressor continues running for 5 minutes without cooling). The fan is off.
5.5
Switching on the unit
Put the main switch (3) in position I. The pilot lamp shows the unit being ready for operation.
Observe a delay time of about 30s between switching Off and On again. Otherwise an initializa-
tion problem might occur (display showing e.g. “–1999”).
In case the main switch is already in position I and yet the controller screen is dark, the chamber is in
stand-by mode. Switch on the unit by pressing any button. When switched on, the unit operates in the
operating mode entered before switching off. In Manual Mode (HAND), the controller regulates the tem-
perature to the last entered set-point, and in Program Mode (AUTO) it regulates the temperature to the
set-points reached during previous program operation.
Summary of Contents for 9020-0146
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