7
Fig.4: SPI terminals
5. Operating voltage
GLT80TDC is designed to operate in a wide range of DC
voltages, supplied either by a battery or by any other kind of
filtered DC power supply.
DC VOLTAGE SUPPLY ALLOWED: 10V to 42.4V
Functional modes
• Standard (Default):
From the value of the applied voltage, the electronic driver
automatically decides the rated voltage range of the supply.
Three possible ranges are considered:
12 to 14V: actual voltage is below 17V
24 to 28V: actual voltage is within 17 and
33V 36 to 42V: actual voltage is within 33 and 42.4V
• Special (programming option):
The compressor can be powered by a variable DC source
as, for instance, a photovoltaic panel, in which the output
voltage strongly depends on the intensity of sunlight radia-
tion. In these special cases the driver should be programmed
with rated, minimum and maximum voltages. These values
should be within the allowable DC voltage power supply (10
V to 42.4V).
Rated voltage and voltage limits are programmed by the ap-
pliance manufacturer by means of a PC connected through
the serial port to the driver Serial Port Interface, using the
FxC programming package provided by Huayi Compressor
Barcelona under request.
Figure 4 Shows the RJ45 male connector which can be
plugged to the SPI and the usage of each terminal in it.
