2.2 Wiring
2-39
RS-485 communication connector
Table 2.2-14 Description of control circuit terminal functions
RJ-45
connector
for
keypad
connectio
n
RS-485
communicatio
n port 1
(for keypad
connection)
(1) This is used as a connector for connecting the keypad. The keypad power is supplied from
the inverter via an extension cable for remote operation. If using an extension cable, turn
ON the SW3 terminating resistor.
(2) This is used to connect a computer or programmable controller, etc. by RS-485
communication after disconnecting the keypad. (Refer to "2.2.7 Switching switches" for
details on terminating resistance).
Fig. 2.2-24 RJ-45 connector pin arrangement
• Pins 1, 2, 7, and 8 are assigned as the power supply source for the keypad. When connecting
this RJ-45 connector to other devices, do not use these pins.
This is a USB connector (miniB specification) for connecting to a computer. Function codes can
be edited, transferred, and verified, an inverter test run can be performed, and all states can be
monitored using the inverter support loader (FRENIC Loader)*.
* Refer to Chapter 9 “9.2 FRENIC Loader Overview” for details.
∙ The control circuit terminal lines should be routed as far as possible from the main circuit
routing. Malfunction may occur due to noise.
∙ To prevent direct contact with the main circuit live sections (such as the main circuit terminal
block), route the control circuit wiring inside the inverter as bundles using cable ties.
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