| Description |
Profibus Cable |
Foundation Fieldbus Cable |
RS 485 |
| Application |
Spur and trunk cable for fixed installation indoor and outdoor, on racks, in conduits |
Spur and trunk cable for fixed installation indoor and outdoor, on racks, in conduits |
Spur cable for fixed installation indoor and outdoor, on racks, in conduits |
Type |
1 Pair x 22 AWG |
1 Pair x 18 AWG |
1 Pair x 24 AWG |
| Basic Construction |
|
|
|
| Conductor |
Solid Bare Copper, 0.64 mm dia |
Stranded Bare Copper, 18 AWG |
Stranded Tinned Copper, 24 AWG |
| Insulation |
Foam PE with skin |
Foam PE with skin |
Foam PE with skin |
| Colour code |
Green & Red |
Orange & Blue |
White & Blue |
| Screen |
Aluminium Foil in contact with drain wire and tinned copper wire braid |
Aluminium Foil in contact with drain wire and tinned copper wire braid |
Aluminium Foil in contact with drain wire and tinned copper wire braid |
| Inner Sheath |
PVC, Violet |
PVC, Orange |
PVC, Chrome |
| Armour |
Galvanised Steel Wire 0.9 mm dia |
Galvanised Steel Wire 0.9 mm dia |
Galvanised Steel Wire 0.9 mm dia |
| Outer Sheath |
PVC, Violet |
PVC, Orange |
PVC, Chrome |
| Cable OD (±1.0mm) |
12.5 mm |
12.2 mm |
11 mm |
| Electrical Properties |
|
|
|
| Conductor Resistance (loop) |
Max. 110 Ω/km |
Max.43.6 Ω/km |
Max. 158 Ω/km |
| Impedance |
(≥3MHz)
150 Ω ± 15 Ω |
(at 31.25 kHz)
100 Ω ±20 Ω |
120 Ω ±10 Ω |
| Mutual Capacitance |
nom. 30 nF/km |
nom. 60 nF/km |
nom. 42 nF/km |
| Nom. Attenuation |
0.25/0.625/1.25/3.125/16MHz
6 / 9 / 12 / 18 / 40 dB/km |
At 39 kHz –
max. 3.0 dB/km |
1.969 (@ 1 MHz) dB/100 Mtrs |
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