8. Troubleshooting
8.3 About Alarms
8-21 ME0342-4B
Alarm Name Alarm Name
detection 2
Cause : The position data cannot be detected properly in the Absolute
applicable type encoder.
1) When the power is supplied for the first time to Simple
Absolute applicable type (before executing absolute reset)
2) Voltage drop of absolute battery
(If the detail code in the alarm list of the teaching tool is
0001
H
.)
3) Wire breakage or connector contact failure of
motor/encoder relay cable or actuator enclosed cables, or
attempted to insert and remove the cables in the simple
absolute applicable type. (Detail Code 0002
H
)
4) Changed the parameters of controller
5) Position data loss in absolute reset process in the battery-
less absolute type.
(Detail Code 0006
H
)
6) Motor has replaced in battery-less absolute type, and the
pairing ID registered in the controller has changed.
(Detail Code 000B
H
)
Countermeasure : 2) Supply the power for 72 hours or more and after
charging the battery enough, perform the
absolute reset operation.
If the same failure occurs often even with
enough battery charge, it is considered the end
of the battery life. Replace the battery.
1), 3), 4), 5), and 6) perform an absolute reset.
Refer to [4.5 Absolute Reset]
CB
limited
detection 3
Cause : The encoder cannot detect position information normally with
simple absolute specification. (Encoder overspeed error) The
present position changed at a speed higher than the rotation
speed setting due to an external factor at power cutoff.
Countermeasure : Set the rotation velocity to a higher speed than
what currently is. If the same failure occurs again, it
is necessary to have an absolute reset.
Refer to [4.5 Absolute Reset]
Cause : The link to the field network was disconnected on the field
network type controller.
Countermeasure : 1) Revise parameter settings related to the field
network.
2) Check the settings in the host device (master
unit).
3) Check the connection for the network cable.
4) There may be a concern of noise impact. Check
if there is a noise source around the equipment,
and have a counteraction.
Non-volatile memory write
verify error
Cause : When data is written to the non-volatile memory, comparison
(verification) is performed to confirm whether the data in the
memory matches the write data. At this time, a mismatch was
detected. (Failure of non-volatile memory)
Countermeasure : If the same phenomenon occurs even after the
power is rebooted, it is necessary to replace the
Refer to [teaching tool instruction manual]
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