Maximum Length Of Bus Segment - Hitachi EH-RMP2 Applications Manual

3.3.4 Maximum length of bus segment

Maximum length of bus segment is shown below.
Max segment length (m)
If EH-RMP2 is applied for CE marking (EMC direction), follow the instructions below.
1] Communication cable must be routed in metal duct separated from power or I/O cables as much as
!
CAUTION
2] Use included ferrite core for communication cable with one turn as the picture below.
Table 3.3.4-1 Maximum cable lengths per segment
9.6 19.2 93.75
1200 1200 1200
possible.
Communication connector
Communication cable
Ferrite core
19.0 x 19.0 x 30.0mm
Figure 3.3.4-1 Use ferrite core
Data transfer rate (kbit/s)
187.5 500 1500
1000 400 200
3 – 5
Chapter 3 Installation
3000 6000 12000
100 100 100