Omron RX Series User Manual page 590

10 Troubleshooting
Symptom
The RUN command is
input, but the motor does
not rotate.
The motor rotation speed
does not increase.
10 - 16
Possible cause
The analog voltage/current or
variable resistor input wiring
for the frequency reference is
incorrect.
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.
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.
The inverter trip occurred.
The ALARM LED is lit with
"Exxx" on the display.
The emergency shutoff
function slide switch (SW1) is
ON, but the multi-function
input terminal S3 (EMR:
Emergency shutoff signal) is
OFF.
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.
The wiring from the inverter to
the motor, or the internal
wiring of the motor, is
disconnected.
The load is too heavy.
The motor brake is applied.
There is a contact failure for
the analog voltage/current or
variable resistor input wiring.
High-function General-purpose Inverter 3G3RX-V1 User's Manual (I578-E1)
Remedy
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.
Turn OFF the terminal to which the function is
allocated.
Turn OFF the terminal to which the function is
allocated.
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.
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.
Turn OFF the terminal to which the function is
allocated.
Check the input wiring.
Reduce the load.
Release the brake.
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.
Reference
page
2-14
7-108
7-108
10-3
7-108
7-108
2-14
–
2-14