Symptom Possible cause Remedy
Refer-
ence
page
The RUN com-
mand is input,
but the motor
does not rotate.
When the safety function selector
switch (SW9) is OFF, either the
multifunction input terminal SF1 or
SF2 is OFF.
T
o use the safety function, turn ON both of the
safety input terminals SF1 and SF2. To disable
this function, set the safety function selector
switch to ON.
page
7-69
The multifunction input terminal is
set to “8: RS (Reset),” “15: CS
(Commercial switching),” “16:
SW60 (Commercial switching)” or
“7: FRS (Free-run stop),” and that
terminal is ON.
Turn OFF the terminal to which the function is
allocated.
page
7-60
page
5-49
page
7-141
The multifunction input terminal is
set to “38: ROK: (Permission of
run command)” and that terminal
is ON.
T
urn ON the terminal to which the function is
allocated. page
7-117
The wiring from the inverter to the
motor, or the internal wiring of the
motor, is disconnected.
Check the input wiring. page
2-
10
page
2-48
The load is too heavy. Reduce the load. -
The motor brake is applied. Release the brake. -
There is a contact failure for the
analog input or variable resistor
.
Check the input wiring.
• For the analog voltage or variable resistor
input, measure the voltage between the ter-
minals AI1 to AIC or AI2 to AIC with a tester
etc. to check that the voltage is correct.
• For the analog current input, with the wires
disconnected, measure the current flowing
between the power supply and AII terminals
with a tester etc. to check that the current is
correct.
page
2-10
page
7-35
The overload limit or overcurrent
suppression function is active.
Disable the function, or increase the level at
which the function is activated.
page
7-82
page
7-87
The 1st Maximum Output Fre-
quency (F03) and 1st Frequency
Upper Limit (F15)/2nd Frequency
Upper Limit (E117) are set too
low.
Change the set value.
page
5-19
page
5-32
The acceleration time is too long.
Decrease the acceleration time (F07/E10/E12/
E14).
page
5-39
The multifunction input terminal is
set to “10: J0G: (Jogging)” and
that terminal is ON.
Turn OFF the terminal to which the function is
allocated.
page
5-60
9 Troubleshooting
9-30
M1 Series Standard Type User's Manual (I669)
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