Databus® Foundation Fieldbus
ISA/SP-50 Profibus PA Type A

A single pair 18AWG Bi-Directional digital Fieldbus cable for type A applications (31.25 KBits/sec) available in PVC, LSHF and SWA versions.
  

Cable Construction

Tinned copper conductors 18(7)AWG 0.88mm², polyolefin insulation, aluminium/polyester foil screen, tinned copper drain wire (20AWG) PVC sheath on standard cables.

Technical Information

Conductor 18(7)AWG tinned copper
Core identification White & Black
Sheath colour Orange
Operating temperature 75°C
Voltage Working : 300V
Velocity of propagation 66%
Impedance 100 Ω
Conductor resistance 17.87Ω/km @ 20°C
Nominal attenuation MHz dB/100m
  0.01 0.20
  0.10 0.62
  0.50 2.46
  1.00 3.45

Technical Data
Part No.
Belden
No.
No. of
Pairs
AWG
CSA
mm²
Weight
Kg/Km
O/D
mm
Capacitance
C/C pF/m
Capacitance
C/S pF/m
 1801POFO   3076F   1   18(7)   0.88   51   6.4   82   147 
 1801POFOH   LSHF   1   18(7)   0.88   51   6.4   82   147 
 1801POFOA   SWA   1   18(7)   0.88   246   9.6   82   147 

 

At FSC we refer to LSHF as Low Smoke Halogen Free

This term is interchangeable with LSZH (Low Smoke Zero Halogen), LSOH (Low Smoke Zero Halogen), OHLS (Zero Halogen Low Smoke) and FRNC (Flame Retardant Non-Corrosive). Beware of the terms LSF (Low Smoke and Fume) or RP (Reduced Propogation), when relating to signal or control cables will normally be modified PVC and produce 'Loads of Smoke and Fume'!

Fire retardant, fire resistant, flame resistant or flame retardant?

These terms are often misunderstood. Most cables when exposed to fire will not carry on functioning. If you require cable to continue working in the event of fire, and in accordance with various standards please call us.

 

 

 

 

 

 

 

 

 

 

 

 

 

Some common mispellings of Belden Cable include - Beldon, Beldan, Balden, Baldon and Beldin.
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