Connecting Profibus Dp - Siemens NCU 7 0.2 Series Manual

Supplementary conditions
During laying of the indoor bus cable, you must also consider the following supplementary
conditions (d
Table 7- 21
Features
Bending radius for a single bend
Bending radius (multiple times)
Permissible temperature range for cable routing
Temperature range for storage and stationary operation
Additional references
For length codes of prefabricated cables and additional information on PROFIBUS cables,
refer to "Electrical networks" in the PROFIBUS section of the IK PI catalog titled "Industrial
Communication and Field Devices".
7.8.5

Connecting PROFIBUS DP

Introduction
PROFIBUS cables are connected to the X126/X136 interface by means of a bus connector.
Wiring the bus connector
1. Proceed as follows to connect the bus connector:
2. Plug the bus connector into the corresponding interface on the control unit.
3. Screw the bus connector into place.
Figure 7-12
NCU 7x0.2
Manual, 02/2011, 6FC5397-0AP20-0BA0
= outer diameter of the cable):
O
Supplementary conditions for the laying of PROFIBUS cables
As the control unit is located at the start or end of a segment, you must switch on the
terminating resistor ("ON" switch setting).
Terminating resistor switched on and off
Note
Make sure that the stations on which the terminating resistor is located are always
supplied with voltage during booting and operation.
7.8 PROFIBUS / MPI
Supplementary conditions
80 mm (10xd )
O
160 mm (20xd )
O
-5 °C to +50°C
-30°C to +65°C
Connecting
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