Omron MX2 Series User Manual

10 Troubleshooting
10 - 13
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
10-2 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 10-1 Alarm Display and Remedies on page 10-2.
Symptom
Possible cause
Remedy
Reference
page
The power supply is
The short-circuit bar between
Install the short-circuit bar, or connect a DC
not turned on. (The
POWER LED on
the inverter is not
the terminal +1 and P/+2 is
removed, or no DC reactor is
connected.
reactor.
P. 2-12
P. 2-28
lit.)
Input wiring is disconnected.
Check the input wiring.
The RUN command
The 1st RUN Command Selec-
Set the 1st RUN Command Selection (A002)
P. 5-21
is input, but the
tion (A002) setting is incorrect.
correctly.
motor does not
The 1st Frequency Reference
Set the 1st Frequency Reference Selection
rotate.
Selection (A001) setting is
(A001) correctly, then set the frequency
incorrect.
according to the selected frequency reference
input method.
The frequency is set to 0 Hz.
When the 1st Frequency Reference Selection
(A001) is set to 01 (Control circuit terminal
block), input the analog voltage or current sig-
nal corresponding to the frequency to the ter-
minal O or OI. For details on switching
between the analog voltage and current sig-
nals, refer to 5-5-1 Frequency Reference
P. 5-23
Selection on page 5-23.
When the 1st Frequency Reference Selection
(A001) is set to 02 (Digital Operator), input the
frequency in the Output Frequency Set-
ting/Monitor (F001).
Set the frequency according to the 1st Fre-
quency Reference Selection (A001) setting.
(The input frequency will be displayed in the
Output Frequency Setting/Monitor (F001).)
For the multi-step speed operation, set the
frequency to the Multi-step Speed Reference
P. 5-48
0 to 15 (A020 to A035, A220).
No multi-function input termi-
To input the RUN command via a multi-func-
nal is allocated for the RUN
tion input terminal, set the Multi-function Input
command.
1 to 7 Selection (C001 to C007) to 00 (FW) or
01 (RV).
To input the RUN command via the 3-wire
P. 5-47
P. 5-53
input function, set them to 20 (STA), 21
(STP), and 22 (F/R).
The Multi-function Input 1 to
Disable the Multi-step speed setting. When
7 Selection (C001 to C007)
this setting is enabled, multi-step speed oper-
are set to 02 (CF1) to 05 (CF4)
and those terminals are ON to
ation is performed, so the motor does not
rotate if the frequency values in the Multi-step
P. 5-48
enable the Multi-step speed
Speed Reference 1 to 15 (A021 to A035) are
setting.
0 (default).
Both the forward and reverse
To input the RUN command via the for-
input terminals are ON.
ward/reverse input terminal, turn ON either of
P. 5-47
them.
10
10-2 Troubleshooting

Omron MX2 Series Specifications

General

Brand	Omron
Model	MX2 Series
Category	Inverter
Language	English