10 Troubleshooting
10 - 16
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
The RUN command is
input, but the motor does
not rotate.
The analog voltage/current or
variable resistor input wiring
for the frequency reference is
incorrect.
Wire correctly.
• For the analog voltage or variable resistor input
wiring, measure the voltage between the
terminals FC and SC with a tester etc. to check
that the voltage is correct.
• For the analog current input wiring, with the wires
disconnected, measure the current flowing
between the power supply and FI terminals with a
tester etc. to check that the current is correct.
2-14
Although the inverter is
operated via the Digital
Operator, the Multi-function
Input S1 to S8 Selection
(C001 to C008) is set to 51
(F-TM: Forced terminal block)
and that terminal is ON.
Turn OFF the terminal to which the function is
allocated.
7-108
Although the inverter is
operated via the control circuit
terminal block, the
Multi-function Input S1 to S8
Selection (C001 to C008) is
set to 31 (OPE: Forced
operator function) and that
terminal is ON.
Turn OFF the terminal to which the function is
allocated.
7-108
The inverter trip occurred.
The ALARM LED is lit with
“Exxx” on the display.
Press the STOP/RESET key to reset the trip and,
after determinining the cause and taking
countermeasures based on the alarm code, restart
the inverter.
10-3
The emergency shutoff
function slide switch (SW1) is
ON, but the multi-function
input terminal S3 (EMR:
Emergency shutoff signal) is
OFF.
To use the emergency shutoff function with the slide
switch SW1 ON, turn ON the multi-function input
terminal S3 (EMR: Emergency shutoff signal). To
disable the function, set the slide switch SW1 to
OFF.
7-108
The Multi-function Input S1 to
S8 Selection (C001 to C008)
is set to 18 (RS: Reset), 14
(CS: Commercial switching),
or 11 (FRS :Free-run stop)
and that terminal is ON.
Turn OFF the terminal to which the function is
allocated.
7-108
The wiring from the inverter to
the motor, or the internal
wiring of the motor, is
disconnected.
Check the input wiring. 2-14
The load is too heavy. Reduce the load. –
The motor brake is applied. Release the brake.
The motor rotation speed
does not increase.
There is a contact failure for
the analog voltage/current or
variable resistor input wiring.
Check the input wiring.
• For the analog voltage or variable resistor input
wiring, measure the voltage between the
terminals FC and SC with a tester etc. to check
that the voltage is correct.
• For the analog current input wiring, with the wires
disconnected, measure the current flowing
between the power supply and FI terminals with a
tester etc. to check that the current is correct.
2-14
Symptom Possible cause Remedy
Reference
page
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