RS-485 User's Manual MEH448d - Fuji Electric America

Connection with FVR-E11S series
The pin assignment of FVR-E11S series differs from that of FRENIC series.
Therefore, it may be impossible to access the communications system to which
FVR-E11S is connected. The signal change switch (SW10) equalize the signal
assignment with that of FVR-E11S series, which makes it easy to connect with the
communications system. When SW10 switch is set to "2", the functions are
assigned to the pins as shown in the table below.
Pin No. Signal name Description Remarks
1, 6, 7, 8 NC Unused −
2 SD
Communications cable shielded
terminal
3 DX- RS-485 communications data (-)
terminal
4 DX+ RS-485 communications data (+)
terminal
5 NC
Unused
2-6
Terminal for relaying the shield
of the shielded cable. The 2nd
terminals of the two RJ-45
connectors are internally
connected with each other.
Negative terminal for RS-485
communications data
Positive terminal for RS-485
communications data
The 5th terminals of the two
RJ-45 connectors are
internally connected with each
other.
* For comparison of pin assignment between FRENIC series and FVR-E11S series, see "Table
2.3. in 2.2.2 Caution [1] RJ-45 connector (modular jack) pin layout. "
For the arrangement of the signal change switch (SW10), see "Figure 2.6 (e) in 2.2.2 Cautions
[2] About terminating resistors."