Getting started
UM0277
measured to switch ON the TRIACs which controls the Light Bulb and the Defrost resistor is
approximately 130µs for the AC mains negative cycle (230 V
RMS
50 Hz line). The maximum
delay measured to switch ON the compressor is approximately 170µs for the AC mains
negative cycle (see
).
Figure 12.
Gate current pulses
3.5.3 Force
debug
The Force Debug tab is used to force the AC loads state regardless of the control state
defined by the MCU for easier board validation (
). In order to control these AC
Loads, it is necessary to click the “Debug Mode” button. In this case, the green lights of the
AC Loads buttons are ON, if the associated loads are also ON, otherwise:
●
Clicking the “Compressor” button will turn on Q1, and then the compressor is running.
●
Clicking the “Bulb” button will turn on Q2, and then the light bulb is lit.
●
Clicking the “Defrost” button will turn on Q3, and then the defrost resistor is heating.
Note:
1
The Defrost and Compressor cannot be switched ON at the same time. Setting Defrost
resets Compressor, and vice-versa.
2
In order to return to “Normal” mode, click the “Debug Mode” button. In this case, all the
green lights turn off.
