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Installation
4.9.3 Terminal strip
Contacts :
A = Ground heating element DC
B = Positive connection,
heating element DC
C = Ground electronics
D = Positive connection, electronics
D+ = Alternator signal
S+ = AES input signal from solar
charge regulator
Fig. 36
2
2
1
1
For MES and AES it is compulsory to provide
a permanent 12V DC supply at the terminals
C/D (permanent voltage supply for functional
electronics).
4.9.4 D+ and solar connection (only for
AES models)
D+ − connection:
n >Automatic Mode< the AES electronic system
automatically selects the most efficient energy
supply. In automatic mode the electronic
system uses the D+ signal (dynamo +) of the
alternator to detect 12V DC. 12V DC operation
is selected only while the engine is running in
order to prevent battery discharge.
on the vechicle
on the appliance
Abb. 37
S+ − connection:
12V DC energy can be optionally achieved by
mounting solar equipment to the vehicle. The
solar power equipment must be provided with a
solar charging controller with AES output (ade-
quate charging controllers available in selected
stores). The "S+ connection (Solar +) must be
connected to the respective terminal of the solar
charging controller (AES output). The electronic
system uses the S+ signal of the solar charging
controller to detect solar 12V DC.
Cable cross−sectional areas:
There are no particularly high current flows via
the D+ and S+ connection; therefore no particu-
larly large cross-section is required for these
connections (approx. 1mm² is sufficient).
1
D+ S+
CD
-
+
on the vechicle
on the appliance
Abb. 38
A
+
-
B
2