Setting up the speed
The electronic control unit FDC3 is supplied
with the exclusive Serial Port Interface (SPI),
featuring a RJ45 telephone type connector. This
port is configured to set up the compressor
speed through physical connections between
their terminals. To facilitate this procedure, three
connector cables are supplied together with the
electronic driver. The compressor will run at a
certain speed depending on the used connector,
as shown in Table 2:
Furthermore, if a FDC programming kit is
available, the new FDC3 electronic driver can
be set up by programming it using the kit and a
computer.
NEVER USE FDC3 ELECTRONIC DRIVER IN OTHER
DC COMPRESSOR DIFFERENT THAN GLT80TDC.
If the compressor or the FDC3 electronic driver
should be replaced for servicing a refrigerator or
a freezer, one of the next procedures should be
followed.
1. If a FDC programming kit is available, use it
to check the setting of the old FDC3 electronic
driver and set up the new one by programming
the same parameters.
2. Otherwise, check the old FDC3 electronic driver
for the presence of a connector at the SPI to set
up the speed. If so, take it away and connect it
again at the new FDC3 electronic driver.
3. Otherwise check the appliance for some
information about compressor speed set up. If
so, select the proper connector which gives the
nearest speed set up from table 2.
1. Check for compressor displacement D
0
and
Speed S
0
. Then calculate the required velocity of
GLT80TDC as follows:
S = D
0
· S
0
/ 3 (D
0
in cm3)
and set up GLT80TDC speed by programming (if
FDC programming kit is available) or by selecting
a proper connector according to Table 2.
Table 2. Compressor
speed for each connector
Replacing a GLT80TDC
compressor or FDC3
electronic driver
Replacing a different
brand DC compressor
Connector
Speed
NONE
2000
BLACK
2500
BLUE
3000
RED
3500
6
FRCC.PI.044.A1.02
Summary of Contents for GLT80TDC
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