Bus Cables

Bus Cables

Profibus L2 UL FT4

Bus Cables


This system cable is used to interconnect L2-BUS components. This cable is an economical solution for the cell and field area. For the information exchange between different automation systems as well as for communication with the connected decentralized field units, serial field bus systems are used. The type described here is suitable for the installation in areas where the FT4 standard (special fire standard “vertical tray”) according to UL/CSA applies. For this purpose the line was equipped with a special outer PVC jacket.


Type/Area of Application Fixed Installation,Indoor
Cable Construction 1x2x0.64 mm
Inner Conductor Diameter 1 Copper, bare (AWG 22/1)
Conductor Insulation Foam-Skin-PE
Conductor Colors 1 Red, green
Stranding Element 2 conductors + 2 fillers stranded together
Shielding 1 Polyester foil over stranded bundle
Shielding 2 Polyester foil, aluminum lined
Total Shielding Copper braid, tinned
Drain wire Yes
Outer Jacket Material PVC
Outer Diameter 8.0 mm ± 0.4 mm
Outer Jacket Color Violet

Electrical Data:

Characteristic Impedance@ -20MHz 150 Ω ± 10 Ω
Conductor Resistance 55.0 Ohm/km max.
Insulation Resistance 1.00 GOhm x km min.
Mutual Capacitance@1KHz 30.0 nF/km nom.
Working Voltage  Max: 250 V
Test Voltage 1.5 KV
Attenuation 9.6 kHz 2.5 dB/km
38.4 kHz 4.0 dB/km
4.0 MHz 22.0 dB/km
16.0 MHz 45.0 dB/km

Technical Data:

Weight approximately 66.0 kg/km
Min. Bending Radius for Laying 15 x OD mm
Operating Temperature Range, min. -40 °C
Operating Temperature Range, max. +70 °C