Omron MX2 Series User Manual page 531

Symptom
The RUN command
is input, but the
motor does not
rotate.
Multi-function Compact Inverter 3G3MX2-V1 User's Manual (I585-E1)
Possible cause
The RUN Direction Limit Selec-
tion (b035) is set to limit the for-
ward or reverse rotation.
The input terminal wiring or
short-circuit bar connection for
the RUN command is incorrect.
The analog voltage/current or
variable resistor input wiring for
the frequency reference is
incorrect.
Although the inverter is oper-
ated via the Digital Operator,
the Multi-function Input S1 to
S7 Selection (C001 to C007) is
set to 51 (F-TM: Forced termi-
nal block) and that terminal is
ON.
Although the inverter is oper-
ated via the control circuit termi-
nal block, the Multi-function
Input S1 to S7 Selection (C001
to C007) 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.)
When the safety function selec-
tor switch is ON, either the
multi-function input terminal
S3/GS1 or S4/GS2 is OFF.
The Multi-function Input S1 to
S7 Selection (C001 to C007) is
set to 18 (RS: Reset), 14 (CS:
Commercial switching), or 11
(FRS: Free-run stop) and that
terminal is ON.
The Multi-function Input S1 to
S7 Selection (C001 to C007) is
set to 84 (ROK: Permission of
RUN command) and that termi-
nal 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.
Remedy
Set the RUN Direction Limit Selection (b035)
correctly.
Wire correctly. (The multi-function input termi-
nal status can be checked in the Multi-func-
tion Input Monitor (d005).)
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 determining the cause and taking
countermeasures based on the alarm code,
restart the inverter.
To use the safety function, turn ON both of the
safety input terminals GS1 and GS2. To dis-
able this function, set the safety function
selector switch to OFF.
Turn OFF the terminal to which the function is
allocated.
Turn ON the terminal to which the function is
allocated.
Check the input wiring.
Reduce the load.
Release the brake.
10 Troubleshooting
Reference
page
P. 7-38
P. 2-10
P. 2-12
P. 2-33
P. 2-10
P. 7-22
P. 7-55
P. 7-55
P. 5-43
P. 10-2
P. 7-97
P. 5-39
P. 5-53
P. 7-50
P. 7-38
P. 2-10
P. 2-28
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−
10 - 15
10