Chapter 4
65
Connecting devices
An external terminator is not required for the Flexi Line connections on the CPU
module.
Stub lines or star-shaped wiring are not permitted.
Unused conductors must be connected to FE on both ends.
The max permitted voltage at Flexi Line inputs is ±30V (to terminal A2=0VDC).
Flexi Line cable
The Flexi Line stations can be connected using CAN cables (shielded, twisted pair).
Cable length
Type
Up to 125 m
2 × 0.34 mm² (22 AWG)
Up to 1000 m
2 × 0.75 mm² (18 AWG)
For recommended cables, see Section 13.2.
EMC measures
Please observe the notes in section 4.9.
Equipotential bonding
Always connect the cable screen on both sides to earth potential. If this is not
possible, then earth the side that is connected to the PRE terminals.
Be aware that the earth potential may differ on the earth connections. If this is the
case, you must install an additional equipotential bonding. Follow the relevant
standards and regulations.
Notes
Figure 20:
Connection of a Flexi Line
system
Table 51:
Possible cable lengths and
types for Flexi Line
connections
Summary of Contents for MELSEC-WS series
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