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Installation
5.8
EMC (Electromagnetic Compatibility)
5.8.1
Voltage Supply (AC and DC Variants)
42/66
POLARIS PROFESSIONAL
POLARIS Panel PC Professional 15" up to 24"
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.
To supply voltage to the DC variant, it is necessary to use a regulated power supply unit
with a power level of at least 5 A. The voltage supply at the place of installation may neither
exceed nor drop below DC 24 V 10 %. Observe the voltage drop on the supply cable and
correct if necessary.
The voltage drop in the DC variant of the supply line is calculated with the following formula:
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)
Electricity for a Panel PC
I
Cable cross-section of the supply line
A
Specific conductance of copper
Length of the supply line (consider both the
l
outgoing and return line)
l
R
A
If the voltage drop cannot be balanced out or the calculation produces excessive cable
cross-sections, a separate approved mains adapter must be installed near the installation
site.
As a result of the connection of the power supply to the POLARIS, the earth for the power
supply is connected to the PE. It is essential to ensure that the earth for the power supply
on the POLARIS, if this is not electrically isolated, indicates no potential difference to the
PE/PA.
- for Zone 2 / 22
U
U
R
I
Technical data subject to change without notice..
Max. 2.4 V
Max. 4.8 V
(until 10% undervoltage is
achieved)
At least 4 A
m
56
mm
²
l
I
A
08/2019
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