10 - 15
3 Troubleshooting
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
10-4 Troubleshooting
10
10-4 Troubleshooting
If you feel that the inverter operation is strange or that the inverter does not operate as intended, use
the following information as a reference, even if the inverter displays no alarm indication.
If the inverter trips with an alarm indication, refer to 10-1 Alarm Codes and Remedies on page 10-2.
Symptom Possible cause Remedy
Reference
page
The power supply is not
turned on.
The POWER LED on the
inverter is not lit.
The short-circuit bar between
the terminal +1 and P/+2 is
removed, or no DC reactor is
connected.
Install the short-cut bar, or connect a DC reactor. 2-15
Input wiring is disconnected. Check the input wiring. 2-14
The RUN command is
input, but the motor does
not rotate.
The RUN Command
Selection (A002) setting is
incorrect.
Set the RUN Command Selection (A002) correctly. 7-18
The Frequency Reference
Selection (A001) setting is
incorrect.
Set the Frequency Reference Selection (A001)
correctly, then set the frequency according to the
selected frequency reference input method.
7-17
The frequency is set to 0 Hz. When the Frequency Reference Selection (A001) is
set to 01 (Control circuit terminal block), input the
analog voltage or current signal corresponding to
the frequency to the terminal FV or FI. For details
on switching between the analog voltage and
current signals, refer to Output Frequency
Setting/Monitor on page 7-14 and Frequency
Reference Selection on page 7-17.
7-17
When the Frequency Reference Selection (A001) is
set to 02 (Digital Operator), input the frequency in
the Output Frequency Setting/Monitor (A001).
Set the frequency according to the Frequency
Reference Selection (A001) setting. The input
frequency will be displayed in the Output Frequency
Setting/Monitor (F001).
For the multi-step speed operation, set the
frequency to the Multi-step Speed Reference 0 to
15 (A020 to A035, A220).
5-53
No multi-function input
terminal is allocated for the
RUN command.
To input the RUN command via a multi-function
input terminal, set the Multi-function Input S1 to S8
Selection (C001 to C008) to 01 (RV). To input the
RUN command via the 3-wire input method, set
them to 20 (STA), 21 (STP), and 22 (F/R).
7-108
The Multi-function Input S1 to
S8 Selection (C001 to C008)
is set to 02 (CF1) to 05 (CF4)
and that terminal is ON to
enable the Multi-step speed
setting.
Disable the Multi-step speed setting. When this
terminal is ON, multi-step speed operation is
enabled, so the motor does not rotate if the
frequency values in the Multi-step Speed Reference
1 to 15 (A021 to A035) are 0 (default data).
5-52
Both the forward and reverse
input terminals are ON.
To input the RUN command via the forward/reverse
input terminal, turn ON either of them.
5-23
The RUN Direction Limit
Selection (b035) is set to limit
the forward or reverse
rotation.
Set the RUN Direction Limit Selection (b035)
correctly.
7-77
The input terminal wiring or
short-circuit bar connection
for the RUN command is
incorrect.
Wire correctly. The multi-function input terminal
status can be checked in the Multi-function Input
Monitor (d005).
2-15
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