
8.MAINTENANCE B-63494EN/02
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8.2.2 Servo Alarms
No. Meaning Description Servo axis
operation when
alarm is issued
364 n AXIS: SOFT PHASE
ALARM(INT)
The servo control software detected an abnormal data
skip in a velocity feedback signal on axis n (axis 1 to axis
8).
Replace the
α pulse coder, or take measures to correct
noise on the feedback cable.
Immediate stop
(same as
emergency stop)
402 SERVO ALARM: SV CARD
NOT EXIST
The axis control card is not provided.
This alarm will be issued also if the eight-axis control card
dedicated to dual check safety function (5DSP card) is
mounted on a machine without the dual check safety
function.
403 SERVO ALARM : CARD/SOFT
MISMATCH
For the axis control card, the correct servo software is not
installed in flash memory.
When the dual check safety function is used:
• An incorrect axis control card is mounted.
• Incorrect servo software is installed in flash memory.
• Monitor software is not installed in flash memory.
Mount the correct axis control card, and install the correct
servo software and monitor software in flash memory.
410 SERVO ALARM : n AXIS
EXCESS ERR
The CNC detected that the positional deviation during a
stop on axis n (axis 1 to axis 8) exceeded the setting
(parameter No. 1829).
Confirm a proper value is set to parameter No. 1829.
This alarm can not released by reset function at dual
check safety.
Immediate stop
411 SERVO ALARM : n AXIS
EXCESS ERR
The CNC detected that the positional deviation during
movement on axis n (axis 1 to axis 8) exceeded the
setting in parameter No. 1828 (parameter No. 1838 when
the safety signal mode C (state where a guard open
request is input, and the guard is open) is set with the
dual check safety function).
Confirm a proper value is set to parameter No. 1828 or
No. 1838.
This alarm can not released by reset function at dual
check safety.
Immediate stop
453 n AXIS:SPC SOFT
DISCONNECT ALARM
The servo control software detected an α pulse coder
signal error on axis n (axis 1 to axis 8).
Replace the
α pulse coder.
Immediate stop
470 n AXIS:ILLEGAL RAM (MNT) An error occurred in a monitor RAM check.
Replace the axis control card.
Immediate stop
471 n AXIS:SPC SOFT
DISCONNECT (MNT)
The monitor detected an alpha pulse coder signal error on
axis n (axis 1 to axis 8).
Replace the
α pulse coder.
Immediate stop
473 n AXIS:SOFT PHASE
ALARM(INT/MNT)
The monitor detected an abnormal data skip in a velocity
feedback signal on axis n (axis 1 to axis 8).
Replace the
α pulse coder, or take measures to correct
noise on the feedback cable.
Immediate stop