Cables for industrial PROFIBUS networks

Cabling for reliable PROFIBUS communication

PROFIBUS DP Cables – Solid and Flexible

Choose a standard solid-conductor cable for conventional PROFIBUS installations or a highly flexible trailing cable for energy chains and moving machine parts. Both types are supplied by the metre and have been proven in industrial-network installation, measurement and repair.

  • Standard and trailing versions
  • Shielded type A cable
  • Speeds up to 12 Mbit/s
  • Sold by the metre from 10 m
  • Cables in stock in Liberec
Purple shielded cable for an industrial PROFIBUS DP network
A
Fixed installation without regular movement

Use the standard SIEMENS cable with a solid conductor.

B
Energy chain or moving machine section

Use the flexible LAPP trailing cable with a PUR sheath.

Which cable should you choose and how should PROFIBUS be installed correctly?

Two cables for most common industrial applications

Fixed installation

Standard PROFIBUS DP Cable

SIEMENS 6XV1830-0EU10

A standard two-core shielded cable for conventional PROFIBUS DP installations inside machines, control cabinets and production plants where the cable is not subject to regular movement.

  • solid copper conductor,
  • characteristic impedance of 150 Ω,
  • design suitable for fast installation,
  • double shielding against electromagnetic interference,
  • intended for fixed cable routing,
  • sold by the metre, minimum 10 metres.
View the standard cable
Moving installation

Flexible PROFIBUS DP Trailing Cable

LAPP UNITRONIC BUS PB FD P 2170222

A highly flexible cable for energy chains, moving trolleys and machine sections where the cabling is repeatedly bent or exposed to vibration and mechanical stress.

  • fine-stranded flexible conductors,
  • halogen-free PUR sheath,
  • oil resistance and increased flame resistance,
  • double shielding for electromagnetically demanding environments,
  • suitable for energy chains and torsional stress,
  • sold by the metre, minimum 10 metres.
View the flexible cable
1 Does the cable move?

For repeated bending, travel or twisting, use only a cable designed for moving applications.

2 What is the transmission speed?

A higher speed significantly reduces the maximum permitted length of one electrical PROFIBUS segment.

3 How demanding is the environment?

Assess oils, chemicals, temperature, vibration, electromagnetic interference and the cable-routing method.

Indicative maximum length of one PROFIBUS DP segment

The values apply to correctly installed copper PROFIBUS type A cable without a repeater. Actual reliability is also affected by the number of connectors, termination quality, stubs, shielding and the electromagnetic environment.

1,200 m9.6 to 93.75 kbit/s
1,000 m187.5 kbit/s
400 m500 kbit/s
200 m1.5 Mbit/s
100 m3 to 12 Mbit/s

Principles for correct PROFIBUS cable installation

Observe the cable’s minimum bending radius
Route the cable separately from power conductors
Connect the shield around the full circumference of the connector
Do not remove an unnecessarily large section of shielding
Do not exceed the permitted segment length
Enable termination at both ends of the segment
Do not create long, uncontrolled stubs
Use high-quality connectors with screw terminals
Measure the network with a PROFIBUS tester after installation

Most common mistakes when using PROFIBUS cable

  • using standard solid cable in an energy chain,
  • severely bending the cable near a connector or cabinet entry,
  • routing it in parallel with motor and variable-frequency-drive cables,
  • stripping too much insulation and interrupting the shield,
  • swapping conductors A and B or leaving terminals loose,
  • using a mechanically damaged cable that still communicates intermittently,
  • exceeding the maximum segment length without a repeater.
How do you order cable by the metre?

The minimum order length is 10 metres. Enter the required number of metres as the quantity. The cable will be supplied in one continuous length according to the available reel length.

Do not forget installation accessories

For correct installation you will need suitable connectors, termination and a tool for precise cable stripping without damaging the conductors or shielding.

Are you dealing with outages or replacing old cabling?
Send us the segment length, transmission speed, number of stations, environment type and photographs of the cable route. We will recommend the correct cable, connectors, any network division using repeaters and a suitable method for subsequent measurement.
FOXON PLUS
PROFIBUS FastConnect Stripping Tool

PROFIBUS FastConnect Stripping Tool

In stock
Code: 6GK1905-6AA00
78 EUR excl. VAT
94,38 EUR Incl. VAT
A handy tool for those who often install and reinstall PROFIBUS networks (assemble and reassemble PROFIBUS connectors, repeaters, etc.). 
PROFIBUS: 3 Sins and 10 Tips

PROFIBUS: 3 Sins and 10 Tips

The PROFIBUS industrial bus is highly tolerant and will forgive many faults. But if a critical fault occurs—or several small ones accumulate—you will definitely notice. That’s why this aging industrial network deserves attention. Even if faults on your network are still rare, they will gradually accumulate. What do our technicians recommend? What are their 10 tips for maintaining PROFIBUS?