Connecting up
4.5 DSL connection
SCALANCE M826
Operating Instructions, 08/2018, C79000-G8976-C362-05
47
4.5
DSL connection
CAUTION
Risk of fire
To reduce the risk of fire only use telephone cable with 26 AWG (0.125 mm
2
) or larger.
NOTICE
Overvoltage protection
If the SHDSL cables are laid outdoors, voltage surges, for example as a result of lightning
strikes are possible. To avoid dangerous voltage surges, additional lightning protection
measures need to be taken, for example by installing additional lightning protectors.
The following lightning protectors from DEHN are suitable:
•
2-wire operation: BXT ML2 B 180, article number 920 211
•
4-wire operation: BXT ML4 BD HF 24, article number 920 375
Manufacturer:
DEHN+SOEHNE GmbH+Co.KG Hans Dehn Str.1 Postfach 1640 D-92306 Neumarkt,
Germany
Any cable shields must be grounded where the enter the building. The lightning protection
measures should be undertaken by qualified specialists to ensure the correct installation /
functioning of the lightning protection.
2-wire mode
Connect the 2-wire cable directly to the first terminal block (X1) of the device.
The following table shows the maximum possible data transmission rate depending on the
distance (standard ITU-T G.991.2).
The data rate that is actually possible depends on the following parameters:
●
the cable cross-sectional area
●
the cable quality
●
the cable length
●
the age of the cable
Distance [km]
Max. possible data transmission rate [Mbps]
Copper 2-wire cable with
a diameter of 0.6 mm
Copper 2-wire cable with
a diameter of 1.4 mm
0.1
15.3
15.3
0.2
13.3
14.0
0.5
11.8
13.2
Summary of Contents for SIMATIC NET SCALANCE M826
Page 7: ...Preface SCALANCE M826 Operating Instructions 08 2018 C79000 G8976 C362 05 7 ...
Page 8: ......
Page 16: ...Security recommendations SCALANCE M826 16 Operating Instructions 08 2018 C79000 G8976 C362 05 ...
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Page 74: ...Index SCALANCE M826 74 Operating Instructions 08 2018 C79000 G8976 C362 05 ...