Symptom Possible cause Remedy
Refer-
ence
page
Noise enters in the
TV or radio located
near the inverter.
The TV or radio is af
fected by
the radiated noise from inverter.
Move the TV or radio as far away as possi-
ble from the inverter. -
An option error
(alarm code: 23) oc-
curred.
The inverter received an error
detected in the option unit.
Refer to the manual for the option unit.
-
Inverter fault: The option con-
nector does not work normally.
The connector may be faulty if the problem
persists even after taking a remedy on the
option unit side. If the problem persists
even after checking the option connector
for loose fitting and dirt on the contacts, re-
place the inverter.
-
An option communi-
cations error (alarm
code: 23) occurred.
The inverter stops communicat-
ing with the option unit after
recognizing it. The option unit is
not mounted securely.
Check the option connector for loose fitting
and dirt on terminal contacts. Check that
the terminal block cover of the inverter is fit
securely on the inverter.
-
Sysmac Studio can-
not make an online
connection.
The USB cable is not connect-
ed correctly.
Fully insert the USB cable into both the PC
and controller.
-
Sysmac Studio “Communica-
tions Settings” > “Communica-
tions Method” is not set to
“USB-Direct Connection.”
Set Sysmac Studio “Communications Set-
tings” > “Communications Method” to
“USB-Direct Connection.”
-
The USB driver is not correctly
installed.
Install the USB driver
. For details of USB
driver installation methods, refer to the ap-
pendix of Sysmac Studio Version 1
Operation Manual (SBCA-470).
-
The brake control
function causes an
overload protection
(alarm code: 19).
The inverter is in operation with
the brake force.
T
urn OFF the RUN command to the inver-
ter in the brake force state. Even under DC
injection braking, an overload protection
alarm may occur.
page
7-72
With at or lower than the Brake
Control Brake-release Frequen-
cy (300EHex-46Hex) set fre-
quency, the brake does not re-
lease.
Set the frequency to a value exceeding the
Brake Control Brake-release Frequency
(300EHex-46Hex) value.
page
7-72
Brake transistor er-
ror (alarm code: 3B)
occurred.
The brake transistor is dam-
aged.
Replace the inverter
.
-
9 Troubleshooting
9-36
M1 Series EtherCAT Type User’s Manual (I670)
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