Omron M1 Series User Manual page 758

9 Troubleshooting
Alarm
Alarm
sub-
code
code
(0H2)
0
(0H3)
9-18
Name Description
(1) External equipment
alarm function is oper-
ating
(2) Miswiring or bad
connection in external
trip wiring
External trip
(3) Error in parameter
settings
(1) The ambient tem-
perature exceeds the
Inverter internal
inverter specification
overheat
range
Check point and remedy reference
Inspect the operation of the external equip-
ment.
→ Remove the cause of the alarm caused
in the external equipment.
Check that wiring is correctly connected to
the terminal for which "9: External trip (EXT)"
is selected from E01 to E05, E98, E99.
→ Connect the external alarm wiring cor-
rectly.
Check if "9: External trip (EXT)" is selected
for an unused terminal from E01 to E05,
E98, E99.
→ Change assignment.
Check that the "EXT" logic set in E01 to E05,
E98, E99 and the external signal logic (posi-
tive/negative) match.
→ Set the logic correctly.
Measure the ambient temperature.
→ Reduce the inverter ambient tempera-
ture such as by improving the air flow to
the panel.
M1 Series Standard Type User's Manual (I669)