Profibus-Dp Bus Cables - Siemens SIMATIC S7-400 Installation Manual

Networking
5.5

PROFIBUS-DP Bus Cables

PROFIBUS-DP Bus Cables
Siemens supply the following PROFIBUS-DP bus cables (see catalog ST 70):
PROFIBUS-DP bus cable
PROFIBUS-DP cable for burying in ground
PROFIBUS-DP trailing cable
PROFIBUS-DP bus cable with PE sheath (for foodstuffs and
luxury food industry)
PROFIBUS-DP bus cable festoons
Characteristics of the PROFIBUS-DP Bus Cable
The PROFIBUS-DP bus cable is a twisted, shielded pair with the following
characteristics:
Impedance
Loop resistance
Working capacitance
Attenuation
Permissible core cross-section
Permissible cable diameter
Rules for Laying Cables
When you lay the PROFIBUS-DP bus cable, you should not:
• Twist it,
• Stretch it, or
• Compress it.
Furthermore, when installing the indoor bus cable, you must observe the following
basic conditions (d
Bending radius for single bend
Bending radius for repeated bends
Permissible temperature range for installation
Storage and stationary operating temperature range
5-18
Characteristics
= outer diameter of the cable):
A
Characteristics
6XV1830-0AH10
6XV1830-3AH10
6XV1830-3BH10
6XV1830-0BH10
6XV1830-3CH10
Values
approx. 135 to 160 Ω (f = 3 to 20 MHz)
≦ 115 Ω/km
30 nF/km
0.9 dB/100 m (f = 200 kHz)
2 2
0.3 mm to 0.5 mm
8 mm ± 0.5 mm
Automation System S7-400 Hardware and Installation
Boundary
Conditions
≥ 80 mm (10 x d )
A
≥ 160 mm (20 x d )
A
-- 5 _C to + 50 _C
-- 30 _C to + 65 _C
A5E00850741-01