YASKAWA DeviceNet SI-N3 Technical Manual

Also see for DeviceNet SI-N3: Technical manual Installation manual Installation manual Technical manual Installation manual

Contents

5 Installation Procedure14 YASKAWA ELECTRIC SIEP C730600 43A YASKAWA AC Drive-Option Card DeviceNet Technical Manual Cable Length Trunk LineThe maximum allowed trunk line length depends on the type of cable used and the network baud rate. The total cablelength includes the length of the trunk and the sum of all the drop lines.Table 6 Trunk Line Cable LengthTo calculate the maximum total length for trunk lines of mixed thick and thin cables, use the following formulas:• 125 k bit/s: Lthick + (5 x Lthin ) ≤ 500 m• 250 k bit/s: Lthick + (2.5 x L thin) ≤ 250 m• 500 k bit/s: Lthick + L thin ≤ 100 m Drop LineThe drop line is measured from the tap on the trunk line to the transceiver of the DeviceNet node. Note that the totalcable length includes the length of the trunk and the sum of all the drop lines.Table 7 Drop Line Cable Length EDS FilesFor easy network implementation of drives equipped with a SI-N3, an EDS file can be obtained from:Europe: http://www.yaskawa.eu.comJapan: http://www.e-mechatronics.comOther areas: contact a Yaskawa representative.Baud Rate (k bit/s) Thick Cable (m) Thin Cable (m)125 500 100250 250 100500 100 100Baud Rate (k bit/s) Maximum at Each Drop (m) Maximum Total (m)1256156250 78500 39