Lenze E84DGFCC Manual do Utilizador descarregar pdf (Página 26)

Communication manual 8400 motec CANopen

Installation

Electrical installation

26 L EDS84DMOTCAN EN 3.0 - 11/2011

5.2.3 Specification of the bus cable

We recommend the use of CAN cables in accordance with ISO 11898-2:

Observe the notes provided on the Bus cable length

( 26)!

5.2.4 Bus cable length

Total cable length

1. Check that the total cable length is not exceeded.

The total cable length is determined by the baud rate.

[5-1] Total cable length

CAN cable in accordance with ISO 11898-2

Cable type Paired with shielding

Impedance 120 Ω (95 ... 140 Ω)

Cable resistance/cross-section

Cable length ≤ 300 m

Cable length 301 ... 1000 m

≤ 70 mΩ/m / 0.25... 0.34 mm

(AWG22)

≤ 40 mΩ/m / 0.5 mm

(AWG20)

Signal propagation delay ≤ 5 ns/m

 Note!

• It is absolutely necessary to comply with the permissible cable lengths.

• Please take into account the reduction of the total cable length due to the

signal delay of the repeater.

Consider the use of repeaters

( 28)

• Mixed operation refers to different nodes being connected to the same

network.

• If the total cable lengths of the nodes are different at the same baud rate, the

smaller value must be used to determine the maximum cable length.

Baud rate [kbps] Max. bus length [m]

20 4013

50 1575

125 600

250 275

500 113

800 38

1000 13

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 110 111

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