Omron M1 Series User Manual page 755

Event code Event name
087F0000 hex Undervoltage The DC link bus volt-
280F0000 hex Input Phase
Loss Error
28100000 hex Output
Phase Loss
Error
M1 Series EtherCAT Type User's Manual (I670)
Description
(1) A momentary power inter-
age dropped below ruption occurred.
the undervoltage de-
tection level.
(2) The inverter's power sup-
ply voltage is not within the
specified range.
(3) There is a faulty device or
incorrect wiring in the power
circuit.
(4) Power supply voltage tem-
porary drops due to a large
starting current flowing to an-
other load connected to the
same power supply system.
(5) Power supply voltage
drops due to the inrush current
of the inverter caused by insuf-
ficient power transformer ca-
pacity.
There is an input (1) Wiring to the main power
phase loss, or the supply input terminals is dis-
power supply has a connected.
large phase-to-phase
imbalance.
(2) The main power input ter-
minal is not firmly tightened.
(3) The 3-phase power supply
has a large phase-to-phase
imbalance.
(4) An excessive load is peri-
odically applied.
(5) A single-phase power sup-
ply was connected to the prod-
uct requiring a 3-phase power
supply.
There is an output (1) The inverter's output wiring
phase loss. is disconnected.
(2) The motor winding is bro-
ken.
(3) The inverter output termi-
nals are not firmly tightened.
Assumed cause
Min
√
√
√
Appendices
Level
Reference
Obs Info
page
A-238
page
A-239
page
A-240
A-209
A