Setting up the speed
The electronic control unit FDC1 is supplied
with the exclusive Serial Port Interface (SPI),
featuring a RJ11 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 FDC1 electronic driver can
be set up by programming it using the kit and a
computer.
NEVER USE FDC1 ELECTRONIC DRIVER IN OTHER
DC COMPRESSOR DIFFERENT THAN GD30FDC.
If the compressor or the FDC1 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 settings of the old FDC1 electronic
driver and set up the new one by programming
the same parameters.
2. Otherwise, check the old FDC1 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 FDC1 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.
4. Otherwise compressor speed can be set up by
a trial and error procedure. In this case, take as a
first approximation the connectors indicated in
table 3 depending on the type of appliance and
its net volume.
1. Check the compressor model and speed.
2. If speed S
0
is known and a FDC programming
kit is available, set up GD30FDC compressor
speed by programming the following speed:
S = S
0
/ 1.5 for BD35F
S = S
0
/ 1.2 for BD50F
S = S
0
for BD80F
3. Otherwise, set up GD30FDC compressor speed
according to Table 4.
Table 2. Compressor
speed for each connector
Replacing a GD30FDC
compressor or FDC1
electronic driver
Replacing a DC
compressor model
BD35F, BD50F or BD80F
4. If speed is not known, measure the value of the
resistor R1 placed in series with the thermostat
and connected to “C” terminal. Then set up
GD30FDC speed according to Table 5.
Connector
Speed
NONE
1.500
BLACK
2.167
BLUE
2.833
RED
3.500
Connector
Refrigerator
Freezer
Refrig freezer
None
less than 60 liters
less than 40 liters
less than 50 liters
Black
from 60 to 150 liters
from 40 to 100 liters
from 50 to 125 liters
Blue
from 120 to 300 liters
from 80 to 200 liters
from 100 to 250 liters
Red
from 180 to 450 liters
from 120 to 300 liters
from 150 to 375 liters
Compressor
Without connector
Black connector
Blue connector
Red connector
BD35F
rpm < 2.750
rpm >2.750
-
-
BD50F
rpm < 2.200
rpm = 2.200 a 3.000
rpm > 3.000
-
BD80F
-
rpm < 2.500
rpm = 2.500 a 3.150
rpm > 3.150
Table 3. Suggested
connector as a the
function of the appliance
Table 4. Type of
connector to be used to
replace Danfoss
compressor when speed
is known
6
FRCC.PI.045.A1.02
