Foundation fieldbus cable is available in three ranges: type A (can also be known as Profibus PA), type B or high-speed. The PE version is suitable for use in ducts, LSZH provides increased safety in the case of fire and SWA is suitable for direct burial applications. Multi pair versions may be available in some types.
These single pair foundation fieldbus cables are designed for use in process automation industries such as Chemical, Food, Oil, Gas, Paper, Metals and Minerals.
Note: low smoke zero halogen / halogen free (LSZH, LSOH, LSHF, OHLS) should not be confused with LSF (low smoke and fume), an in-depth explanation is shown on our LSZH Control Flex front page.
| Construction – Foundation fieldbus |
|---|
| solid or stranded plain or tinned copper conductors |
| core insulation material varies |
| 2x cores twisted into 1x pair |
| collective aluminium/polyester foil tape (CAT) screen |
| tinned copper drain wire or tinned copper wire braid (TCWB) screen |
| orange, blue or black outer sheath, material varies |
| Technical – Foundation fieldbus | |
|---|---|
| conductor sizes: | type A = 18awg (solid or stranded) |
| type B & high-speed = 22awg (stranded) | |
| as AWG chart, see Stranding/Resistance page | |
| conductor make-up: | as detailed on specification, see PDF data sheet below |
| speed per second: | high-speed = 1.0 & 2.5MBits, others = 31.25 KBits |
| voltage rating: | 300V or 600V, please check if critical |
| impedance: | type A = 100 Ohms, others = 150 Ohms |
| temperature range: | usually -20°C to +70°C, please check if critical |
| based on Belden no’s: | type A = 3076F, type B = 3077F, high-speed = 3078F |
| core identification: | coloured blue & orange |
A printable specification is available here: Foundation fieldbus 1 pair type A, B or high-speed.
For more bus cables return to the Fieldbus Cables front page.
