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POLARIS BASIC
- for Zone 1 / 21
POLARIS Panel PCs 5.7" / 10.4" / 12.1"
6.10
EMC (Electromagnetic Compatibility)
Technical data subject to change.
09/2020
This is a class A unit and can cause radio interference in residential areas; if it does, the
owner/managing operator may be required to implement suitable measures and pay for
loss or damage.
Only shielded conductors may be used as connecting conductors. This applies both to
the data line and to all other conductors too.
The data lines must be stranded in pairs.
Example 2 x 2 x 0.75 mm² LIYCY TP.
As far as possible, separate conductors should be used for power supply and data
A regulated mains adapter with an output of at least 2 A must be used as power supply. It
is not permitted to fall below or exceed the power supply of DC 24 V 10 % at the
installation site. The voltage drop on the supply line must be observed and corrected where
necessary.
U Voltage drop on the supply line at power supply
voltage of DC 24 V
U Voltage drop on the supply line with maximum
permissible mains adapter overvoltage
DC 24 V +10 % (26.4 V)
I
Electricity for a POLARIS Panel PC
Cable cross-section of the supply line
A
Specific conductance of copper
l
Length of the supply line
(consider both the outgoing and return line)
l
R
A
Examples
Supply voltage DC 24 V
If the voltage drop cannot be balanced out or the calculation produces excessive cable
cross-sections, a separate mains adapter must be installed near the installation site.
Example:
pressure-tight encapsulation or ex-free area on the outside of the building.
6.10.1
Voltage Supply (AC- and DC-Variants)
U
R
U
I
Cable-cross-section
0,75 mm²
1,5 mm²
2,5 mm²
Commissioning
Max. 2.4 V
Max. 4.8 V
(until 10% undervoltage is
achieved)
At least 1.5 A
m
56
mm
²
l
I
A
Maximum line length
approx. 50 m
approx. 100 m
approx. 170 m
EN 41/65
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