Alarm Display And Remedies; Alarm Display - Omron MX2 Series User Manual

10 Troubleshooting

10-1 Alarm Display and Remedies

10-1-1 Alarm Display

If an error occurs, the inverter shuts off its output ("trip"), turns ON the ALARM LED, and displays an
alarm code. With the alarm code displayed, you can press the Increment key to view the detailed infor-
mation such as the output frequency, current, and DC voltage when the alarm signal was output.
After checking the RUN command and other signals, you can reset the alarm.
Before resetting the alarm, be sure to investigate the cause of the trip and remove the trip factor(s)
according to the displayed alarm code.
Note that, during an inverter trip, you cannot change parameter settings and data cannot be written to
the EEPROM via communications. To change parameter settings, cycle the power supply, or reset the
trip in advance.
This section describes how to deal with troubles that may occur after you start using the inverter.
Fault Monitor Display
Use the Fault Monitor 1 to 6 (d081 to d086) to check the current alarm, as well as the past alarms. The
Fault Monitor 1 (d081) displays information on the latest alarm.
Precautions for Correct Use
The status information displayed on the inverter in the event of an alarm may not match the
apparent operation of the motor.
For example, under PID control or in applications where the frequency is input via the analog
signal, the inverter may accelerate and decelerate slightly in a repetitive manner due to fluctua-
tion of the analog signal etc. even though the motor may appear to rotate at a constant speed.
10 - 2
Fault Monitor 1
Hz Alarm factor
Alarm code
A
(Refer to 10-1-2 Alarm Code
List on page 10-4.)
Output frequency at
Hz
alarm occurrence
A
[Hz]
Output current at
Hz
alarm occurrence
A
[A]
P-N DC voltage at
Hz
alarm occurrence
A
[V]
Total RUN time until
Hz
alarm occurrence [h]
A
Total power ON
Hz
time until alarm
A
occurrence [h]
Multi-function Compact Inverter 3G3MX2-V1 User's Manual (I585-E1)
Inverter status at alarm occurrence
: Initializing at power-on or
with reset terminal ON
: During stop
: During deceleration
: During constant speed
: During acceleration
: During RUN at 0-Hz frequency
: During startup
: DC injection braking enabled
: Overload limit enabled
: Not displayed for
3G3MX2-V1 Series