Alarm
code
Alarm
subcode
Name Description Check point and remedy reference
19 Hex
(0LU)
0000 Hex
Inverter over-
load
(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) 1st Manual Tor-
que Boost V
oltage
(3004Hex-0AHex*)
too high
Check 1st Manual T
orque Boost Voltage
(3004Hex-0AHex*) and readjust so that this
does not stall even if data is lowered.
→ Adjust 3004Hex-0AHex*.
(3) Short accelera-
tion/deceleration time
Recalculate acceleration/deceleration torque
and acceleration/deceleration time required
from the moment of inertia of the load and
acceleration/deceleration time.
→ Lengthen the acceleration/deceleration
time (3004Hex-08Hex, 3004Hex-09Hex,
3005Hex-0BHex, 3005Hex-10Hex,
3008Hex-39Hex).
(4) High load Measure the output current.
→ Reduce the load (use the Overload early
warning 2 Level (OL2)
(3005Hex-23Hex), and reduce the load
before an overload occurs.) (During win-
ter
, the load may increase.)
→
Decrease Carrier Frequency
(3004Hex-1BHex).
→ Enable Overload Prevention Control
(3008Hex-47Hex).
(5) The airflow path
is blocked
Check that there is sufficient installation
space.
→ Ensure sufficient installation space.
Check for fin clogging.
→ Clean.
(6) Reduced fan air-
flow because of the
cooling fan service
life or of damage
Check the cumulative run time of the cooling
fan. (Refer to 8-8-13 Cooling Fan Life W
arn-
ing Signal (W
AF) on page 8-88.)
→ Replace the cooling fan.
Visually check that the cooling fan is operat-
ing correctly.
→
Replace the cooling fan.
(7) Long output wir-
ing, with high leak-
age current
Measure the leakage current
→ Insert an output circuit filter (OFL).
E2 Hex
(0PL)
0000 Hex
Output phase
loss detection
(1) Disconnected in-
vert output wiring
Measure the output current.
→ Replace the output wiring.
(2) Motor windings
broken
Measure the output current.
→ Replace the motor.
(3) Loose inverter
output terminal con-
nection
Check if inverter output terminal screws are
loose.
→ Tighten to the recommended tightening
torque.
9 Troubleshooting
9-21
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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