Omron M1 Series User Manual page 784

Appendices
Event name Undervoltage
Meaning The DC link bus voltage dropped below the undervoltage detection level.
Source EtherCAT Master Function Mod-
ule
Error attrib- Level
utes
Effects User program
Indicators EtherCAT NET RUN
---
System-de- Variable
fined varia-
None
bles
Cause and Assumed cause
correction
(1) A momentary power interrup-
tion occurred.
(2) The inverter's power supply
voltage is not within the specified
range.
(3) There is a faulty device or in-
correct wiring in the power cir-
cuit.
(4) Power supply voltage tempo-
rary drops due to a large starting
current flowing to another load
connected to the same power
supply system.
(5) Power supply voltage drops
due to the inrush current of the
inverter caused by insufficient
power transformer capacity.
Attached in- None
formation
Precautions/ None
Remarks
A-238
Source details Slave
Minor fault Recovery
Continues. Operation
EtherCAT NET ERR
---
Data type
None
Correction
Reset the alarm.
To restart the inverter without
alarm, set the value of Power
Interruption Restart Mode
selection (3004-0F hex) to 3, 4,
or 5 depending on the type of
load.
Measure the input voltage.
→ Increase the power supply
voltage to within the specified
range.
Measure the input voltage to
identify the faulty device or incor-
rect wiring.
→ Replace the faulty device, or
correct the incorrect wiring.
Measure the input voltage to
check for voltage fluctuations.
→ Review the power supply sys-
tem.
Check if an alarm occurs when
the molded case circuit breaker,
earth leakage circuit breaker
(with overcurrent protection), or
electromagnetic contactor is
turned ON.
→ Review the power transformer
capacity.
Event code 087F0000 hex
Detection tim-
ing
Error reset Log category
Motor stops.
EtherCAT LINK/ACT
---
Name
None
Prevention
Remove the cause of the mo-
mentary voltage drop.
Apply a voltage that is appropri-
ate for the inverter.
Check the wiring of the main cir-
cuit power supply before use.
Apply a voltage that is appropri-
ate for the inverter.
Select a power transformer with
a capacity appropriate for the in-
verter.
M1 Series EtherCAT Type User's Manual (I670)
Continuously
System log