Mitsubishi Electronics IB-1500193(ENG)-D ユーザーズマニュアル

6 - 8

When a warning occurs, a warning No. will appear on the NC monitor screen and with the LEDs on the front 

of the drive unit. Check the warning No., and remove the cause of the warning by following this list.

(Note1)

Definitions of terms in the table are as follows.
Main side detector: Detector connected to CN2      Sub side detector: Detector 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 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.)

96

Scale feedback error

An excessive difference in feedback amount was detected between the 
main side detector and the MPI scale in MPI scale absolute position de-
tection system. 

*

-

97

Scale offset error

An error was detected in the offset data that is read at the NC power-
ON in MPI scale absolute position detection system.

PR

-

9B

Incremental detector/
magnetic pole shift warning

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.

*

-

9E

Absolute position detector: Revolution 
counter error

An error was detected in the revolution counter data of the absolute po-
sition detector. The accuracy of absolute position is not guaranteed.

*

-

9F

Battery voltage drop

The battery voltage to be supplied to the absolute position detector is 
dropping.

*

-

A3

Distance-coded reference check / initial 
setup warning

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.

*

-

A6

Fan stop warning

A cooling fan in the drive unit stopped.

*

-

E0

Overregeneration warning

Over-regeneration detection level exceeded 80%.

*

-

E1

Overload warning

A level of 80% of the Overload 1 alarm state was detected.

*

-

E4

Parameter warning

An incorrect set value was detected among the parameters send from 
the NC in the normal operation.

*

-

E6

Control axis detachment warning

A control axis is being detached. (State display)

*

-

E7

NC emergency stop

In NC emergency stop. (State display)

*

Deceleration stop 

enabled

E8

 to 

EF

Power supply warning

The power supply unit detected a warning. The error details are differ-
ent according to the connected power supply unit.

*

-

*EA:

Deceleration stop 

enabled

E9

Instantaneous power interruption 
warning

The control power was shut OFF for 25ms or more.

-

-

EA

In external emergency stop state

External emergency stop signal was input.

-

-