Fuji Electric FRENIC-AQUA series User Manual page 24

(4) Connection 2 to host (Multi-drop connection using terminal block)
The figure below shows a connecting example to the multi-drop circuit with the terminal
block. Turn on the terminating resistor insertion switch on the terminating inverter.
Figure 2.4 Multidrop connection diagram (terminal block connection)
For the switch used to insert the terminal resistance, refer to Section 2.2.2 "Connection notes,
[2] About terminating resistors."
- When selecting additional devices to prevent the damage or malfunction of the
control PCB caused by external noises or eliminate the influence of common mode
noises, be sure to see Section 2.2.3 "Connection devices."
- Keep the total wiring length 500 m max.
2-9
2.2 Connections