Alarm
code
Alarm
subcode
Name Description 　Check point and remedy reference
01 Hex
(during ac-
celeration)
(0C1)
02 Hex
(during de-
celeration)
(0C2)
03 Hex
(during con-
stant speed
operation)
(0C3)
(0Cn)
0000 Hex
Instantaneous
overcurrent
(5) Short accelera-
tion/deceleration time
Recalculate torque required from the mo-
ment of inertia of the load and acceleration/
deceleration time, and determine if appropri-
ate.
→ Lengthen the acceleration/deceleration
time (3004Hex-08Hex, 3004Hex-09Hex,
3005Hex-0BHex, 3005Hex-10Hex,
3008Hex-39Hex).
→ Enable 1st Overload Protect Function
Selection (3004Hex-2CHe) and torque
limit (3004Hex-29Hex, 3004Hex-2AHex,
3005Hex-11Hex, 3005Hex-12Hex).
→
Increase the inverter capacity.
(6) Internal braking
transistor short de-
tection has operated
Check that the braking resistor connection
terminal (P+, DB) is not shorted.
Check if the connected braking resistor re-
sistance value is very low.
→
Connect the appropriate braking resis-
tor.
(7) Malfunction be-
cause of noise
Check methods for measures against noise
(grounding conditions, control/main circuit
wiring and installation).
→
Implement measures against noise. For
details, refer to 2-3-4 Wiring for Main
Circuit T
erminals on page 2-15.
→ Enable the retry function
(3008Hex-05Hex).
→ Connect a surge absorber to coils, sole-
noids, etc. in magnetic contactors that
are the cause of noise.
9 Troubleshooting
9-16
M1 Series EtherCAT Type User’s Manual (I670)
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