LS ELECTRIC L7NHF Series, Руководство пользователя

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12. Maintenance and Inspection
12-10
Alarm Code Names Causes Inspection Items Measures to Take
the motor.
Drive abnormality
-
If alarms occur continually after
power cycling, replace the drive
since there may be abnormalities in
the drive.
Encoder2 POS
differnce
(Excessive position
error of external
encoder)
Parameter setting
abnormality
Check the external encoder gear
ratio settings [0x2025] and
[0x2026].
Set the electronic gear ratio
.
Check the position error range
setting [0x2027]. Readjust the parameter according to
the operation condition.
Apparatus abnormality
Check for binding of the
apparatuses.
Inspect the apparatuses.
Drive abnormality
-
If alarms occur continually after
power cycling, replace the drive
since there may be abnormalities in
the drive.
Parameter checksum
(Parameter
abnormality)
O/S replacement
Check the parameters with
maximum setting values in the
variable format.
Restore the default parameter
(0x1011). The parameter setting
values are initialized after
restoration. For this reason, it is
necessary to set the parameters
before operation.
Drive abnormality
-
If alarms occur continually after
power cycling, replace the drive
since there may be abnormalities in
the drive.
Factory setting
(Factory settings
abnormality)
Parameter setting
abnormality
Contact our service center.
Check the drive capacity with the
device name setting [0x1008].
Reset the drive capacity and
download the OS again.
If alarms occur continually after
power cycling, replace the drive
since there may be abnormalities in
the drive.
Enc2 communication
(Load Encoder
Communication Error)
Enc2 cable open
(Load Encoder Cable
Disconnection)
Enc2 Z phase open
(Load Encoder Z-
phase Disconnection)
Load encoder cable
failure Check for disconnection,
abnormal wiring and short circuit.
Replace the encoder cable.
Parameter setting
abnormality
The load encoder type [0x2021]
and load encoder setting
[0x202B] parameter settings
should be the same as the
encoder information.
Modify the parameters so they
match the motor information.
Load encoder failure
-
If an alarm occurs continuously after
power cycling, there may be a
problem with the motor. Replace the
motor.
Drive abnormality
-
If an alarm occurs continuously after
power cycling, there may be a
problem with the drive. Replace the
drive.