4742-E P-28
SECTION 1 INVERTER UNIT (MIV UNIT)
27
Speed
command
over
The speed command value exceeded the allowable value.
XXXXXXXX= Specified velocity command value.
2^-32 [2.5KHz]
Reduce inertia and
friction resistance in
mechanical system.
Change the MIV unit.
Change the motor.
Check the source
voltage.
28
DIFF over
In the position control, position error is excessively large.
XXXXXXXX = Detected position error
2^-16 [pr/Tp]
Reduce inertia and
friction resistance in
mechanical system.
Change the MIV unit.
Change the motor.
29
APA speed
over
Feedrate of an axis is abnormally fast in comparison to the
rapid feedrate of that axis, or detected values changed abnor-
mally due to the failure of the position encoder.
XXXXXXXX = Detected APA velocity
2^-16 [pr/Tp]
The following data indicates special cases.
1: In a linear axis, stroke was exceeded.
2: In a rotary axis, stroke (360
°
) was exceeded.
3: In an axis with a limited stroke, its stroke was exceeded.
Change the MIV unit.
In the case of BL
motor:
Change the motor
attached encoder.
Change the encoder
link cable.
In the case of VAC
motor:
Change the mag-
netic encoder.
Change the mag-
netic encoder cable.
30
Full-closed
loop error
Error amount between the detected position data by the full-
closed loop position encoder and the motor attached position
encoder exceeded the allowable value.
XXXXXXXX = Number of error detection times
Execute full-closed
loop synthesized
offset value.
Change the abso-
lute scale or shaft
attached position
encoder.
Reduce lost motion
amount in the drive
system.
31
Speed over
Actual motor speed is excessively high.
XXXXXXXX = Detected speed
2^-32 [2.5KHz]
Change the MIV unit.
In the case of BL
motor:
Change the motor
attached encoder.
Change the
encoder link cable.
In the case of VAC
motor:
Change the
magnetic encoder.
Change the
magnetic encoder
cable.
No.
Name
Description/Alarm Code
Corrective Action
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