User's Manual

Installation / connection
4.2 Connection
M200D AS-Interface Basic
Manual, 03/2009, A5E01668085-01
55
4.2 Connection
More connection technology products can be found in "Siemens Solution Partners"
(www.siemens.com/automation/partnerfinder
) under "Distributed Field Installation System".
4.2.1 Required components/cables
Selecting the power cables
DANGER
Hazardous voltage
Can Cause Death, Serious Injury, or Property Damage
Before starting work, disconnect the system and devices from the power supply.
The cross-section of the power cables must be suitable for the prevailing ambient conditions.
The following factors determine the cross-section:
● The current set on the device
● The cable installation type
● The ambient temperature
● The type of material (PVC, rubber)
The following maximum current-carrying capacities apply for PVC power cables when
installed, for example, in the cable duct (depending on the ambient temperature):
Cross-section T
U
= 30 °C T
U
= 40 °C T
U
= 45 °C T
U
= 50 °C T
U
= 55 °C
1.5 mm
2
14 A 12.2 A 11.1 A 9.9 A 8.5 A
2.5 mm
2
19 A 16.5 A 15.0 A 13.5 A 11.6 A
4.0 mm
2
26 A 22.6 A 20.5 A 18.5 A 15.9 A