Alarm
code
Alarm
subcode
Name Description Check point and remedy reference
11 Hex
(0H1)
0000 Hex
Cooling fin
overheating
(1) The ambient tem-
perature exceeds the
inverter specification
range
Measure the ambient temperature.
→ Reduce the ambient temperature such
as by improving the air flow to the panel.
(2) The airflow path
is blocked
Check that there is sufficient installation
space.
→ Re-install at a site where sufficient in-
stallation space can be ensured.
Check for fin clogging.
→ Clean.
(3) Reduced fan air-
flow because of the
cooling fan service
life or of damage
Check Cumulative Run Time of Cooling Fan
(3008Hex-2CHex).
→ Replace the cooling fan.
Visually check that the cooling fan is operat-
ing correctly
.
→
Replace the cooling fan.
(4) High load Measure the output current.
→ Set 28: OHF (Cooling fan overheat
warning) to Output T
erminal [DO1]
Function Selection (3005Hex-15Hex)
and Output T
erminal [ROA, ROB] Func-
tion Selection (3005Hex-1CHex) whose
load is to be reduced. Alternatively, re-
duce the load before an overload occurs
using the Overload early warning 2 Lev-
el (OL2) (3005Hex-23Hex).
→ Reduce Carrier Frequency
(3004Hex-1BHex).
→ Enable Overload Prevention Control
(3008Hex-47Hex)
9 Troubleshooting
9-17
M1 Series EtherCAT Type User’s Manual (I670)
9-1 Alarm Display and Remedies
9
9-1-2 Alarm Code List
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