Alarm
code
Alarm
subcode
Name Description 　Check point and remedy reference
33 Hex
(ErF)
0000 Hex
Data save er-
ror in case of
undervoltage
(1) During data save
at power interrup-
tions, the control
power supply drop-
ped suddenly as a
result of rapid dis-
charge of the Main
Circuit DC V
oltage,
etc.
Check the power drop time at Main Circuit
DC Voltage at power interruption.
→
Eliminate the cause of rapid discharge
of the Main Circuit DC Voltage, etc. After
performing a reset to cancel the alarm,
return the frequency reference and PID
command to their original settings, and
restart operation.
(2) Strong noise re-
ceived from sur-
rounds during data
saving at power in-
terruption.
Check methods for measures against noise
(grounding conditions, control/main circuit
wiring and installation).
→
Implement measures against noise. Af-
ter performing a reset to cancel the
alarm, return the frequency reference
and PID command to their original set-
tings, and restart operation.
(3) Error occurred in
control circuit
Check that error occurs every time at power
on.
→ Replace the inverter.
36 Hex
(ErH)
0000 Hex
Hardware er-
ror
(1) Error in combina-
tion of control PCB
and power PCB
Replace the inverter.
38 Hex
(Ero)
0000 Hex
Position con-
trol error
(1) Position control
system insuf
ficient
gain (servo lock)
Readjust Servo Lock Gain (300EHex-62Hex)
and Speed Control 1 P Proportional Gain
(3014Hex-04Hex).
FE Hex
(Err)
0000 Hex
Mock alarm
(1) Object
3008Hex-2EHex
(Mock alarm) set to
1.
→ Perform a reset.
44 Hex
(ErU)
Tool discon-
nection diag-
nosis
(1) A disconnection
occurred on the tool
during a test run.
Check if the USB cable or a connector is dis-
connected.
→ Perform a reset.
(2) A disconnection
occurred on the tool
during forced status
changing of multi-
function output.
9 Troubleshooting
9-12
M1 Series EtherCAT Type User’s Manual (I670)
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