Drive Unit Warning; Dual Signal Warning (A4) - Mitsubishi Electric M800 Series Manual

M800/M80/E80/C80 Series Alarm/Parameter Manual
3 Servo/Spindle Alarms (S)

(1) Drive unit warning

No. Name
96 Scale feedback error
97 Scale offset error
9B Incremental encoder/
magnetic pole shift warning
9E Absolute position encoder:
Revolution counter error
9F Battery voltage drop
A3 In initial setup of ABS position
A4 Dual signal warning
A6 Fan stop warning
E0 Overregeneration warning
E1 Overload warning
E4 Parameter warning
E6 Control axis detachment warning A control axis is being detached. (State display)
E7 NC emergency stop
E8 Power supply warning
to
EF
(Note1) Definitions of terms in the table are as follows.
Main side encoder: Encoder connected to CN2
Sub side encoder: Encoder connected to CN3
(Note 2) Resetting methods
* : Automatically reset once the cause of the warning is removed.
NR: Reset with the NC RESET button. This warning can also be reset with the PR and AR resetting conditions.
PR: Reset by turning the NC power ON again. This warning can also be reset with the AR resetting conditions.
When the control axis is removed, this warning can be reset with the NC RESET button. (Excluding warning 93.)
AR: Reset by turning the NC and servo drive unit power ON again.
(Note 3) Servo and spindle motor do not stop when the warning occurs.
(Note 4) When an emergency stop is input, servo and spindle motor decelerate to a stop. (When SV048, SV055 or SV056 is set for
servo and when SP055 or SP056 is set for spindle.)

Dual signal warning (A4)

No. Name
00A4.00 Dual signal warning
An excessive difference in feedback amount was detected between the
main side encoder and the MPI scale in MPI scale absolute position
detection system.
An error was detected in the offset data that is read at the NC power-ON in
MPI scale absolute position detection system.
The difference between the magnetic pole position after the phase Z has
been passed (magnetic pole shift amount:SV028) and the initially detected
position is excessive in the built-in motor's incremental control system.The
magnetic pole is controlled by the initial detection value.
An error was detected in the revolution counter data of the absolute
position encoder. The accuracy of absolute position is not guaranteed.
The battery voltage to be supplied to the absolute position encoder is
dropping.
This warning is detected until the axis reaches the reference position during
the initial setup of the distance-coded reference check function. This
warning turns OFF after the axis has reached the position, thus set the
value displayed on the drive monitor to the parameter.
An input was detected in the signal related to the dual signal.
Refer to "Dual signal warning (A4)" for details.
A cooling fan in the drive unit stopped.
Over-regeneration detection level exceeded 80%.
A level of 80% of the Overload 1 alarm state was detected.
An incorrect set value was detected among the parameters send from the
NC in the normal operation.
In NC emergency stop. (State display)
The power supply unit detected a warning.
The error details are different according to the connected power supply unit.
Refer to "Power supply warning".
Sub info
Axis name The system has been set in the STO state. The STO state is also entered at
the time of emergency stop, but in this case, this warning will not appear
because the emergency stop has priority.
61
Details
Details
Reset Stop
method method
* -
PR -
* -
* -
NR -
PR -
* -
* -
* -
* -
* -
* -
* Dec stop
enabled
* -
*EA:
Dec stop
enabled
IB-1501279-H