Omron M1 Series User Manual page 768

9 Troubleshooting
9-2
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 9-1 Alarm Display and Remedies on page 9-2.
Symptom
The power sup-
ply is not turned
on. (The POW-
ER LED on the
inverter is not
lit.)
The RUN com-
mand is input,
but the motor
does not rotate.
9-28
Possible cause
The short-circuit bar between the
terminal +1 and P/+2 is removed,
or no DC reactor is connected.
Input wiring is disconnected.
1st RUN Command Selection
(F02) is incorrect.
1st Frequency Reference Selec-
tion (F01) is incorrect.
There frequency is set to 0 Hz.
Remedy
Install the short-circuit bar, or connect a DC re-
actor.
Check the input wiring.
Set 1st RUN Command Selection (F02) cor-
rectly.
Set 1st Frequency Reference Selection (F01)
correctly according to the frequency reference
input method, and specify the frequency.
When the 1st Frequency Reference Selection
(F01) is set to "1, 2, 3, 5: Analog voltage in-
put," input the analog voltage or current signal
corresponding to the frequency to the terminal
AI1 or AI2. For details on switching between
the analog voltage and current signals, refer to
5-5-1 Frequency Reference Selection on page
5-27.
When the 1st Frequency Reference Selection
(F01) is set to "0: Digital Operator," set the fre-
quency with the operator "
set values are reflected in C99 (Digital Refer-
ence Frequency (multi-step speed reference
0)) / E109 (2nd Digital Reference Frequency
(2nd multi-step speed reference 0)) in accord-
ance with No. 1 control / No. 2 control.
Input the frequency according to the 1st Fre-
quency Reference Selection (F01). (The input
frequency will be displayed in the frequency
reference monitor (monitor mode: 3_02).)
For the multi-step speed operation, set the fre-
quency to the multi-step speed reference 0 to
15 (C99, E109, C05 to C19).
M1 Series Standard Type User's Manual (I669)
Refer-
ence
page
page
2-10
page
2-45
page
5-25
page
5-27
/ key." The
page
5-57