Danfoss VLT AutomationDrive FC 302 Panduan Instalasi - Halaman 12

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Halaman Cetak
Danfoss VLT AutomationDrive FC 302 Panduan Instalasi
Installation
3.7.3 Bus Segment Requirements
A maximum of 32 field devices (nodes) can be connected per fieldbus segment. Field devices include:
•
Frequency converter, active node.
•
Master, active node.
3
3
•
Repeater, passive node.
NOTICE
A repeater represents a node in each of the 2 segments it connects.
Maximum fieldbus cable length
Illustration 3.8 Maximum Number of Frequency Converters per Segment
Segment
1
2
3
4
Table 3.3 Number of Active Nodes per Segment
Transmission
speed
9.6–187.5
kBaud
500 kBaud
1.5 MBaud
3–12 MBaud
Table 3.4 Maximum Total Bus Cable Length, including Drop
Cables
10
VLT
Repeater
Active nodes
0
1
2
3
1
2
3
segment
segments
segments
[m]
[m]
[m]
1000
2000
3000
400
800
1200
200
400
600
100
200
300
Danfoss A/S © 07/2015 All rights reserved.
®
PROFIBUS DP MCA 101
Transmission speed
32
9.6–93.75 kBaud
62
187.5 kBaud
92
500 kBaud
122
1.5 MBaud
3–12 MBaud
4
Table 3.5 Maximum Drop Cable Length per Segment
segments
[m]
The length statements in Table 3.4 and Table 3.5 are valid
for bus cables with the properties in chapter 3.7.2 Cable
4000
Specifications.
1600
800
400
Maximum drop cable length
per segment [m]
96
75
30
10
None
MG33C602