FSC Global - Fieldbus ISA/SP-50 Profibus PA Type A Bus Cable

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.