
2.PREAPARATIONS FOR OPERATION B-63323EN-1/03
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Caution
CAUTION
1 If a reset is caused while DVALn or DVAL is set to 1
when bit 7 (IVO) of parameter No. 1800 is set to 0,
the reset state is not cleared until DVALn or DVAL is
set to 1. To exit from the reset state in this case, set
bit 7 (IVO) of parameter No. 1800 to 1.
2 When the VRDY OFF alarm ignore signal is set to 1
and the servo amplifier ready signal is set to off, the
motor is freed from the drive, but follow up is not
performed. To perform follow-up, enable the follow-
up function by setting the following parameters for
setting the servo-off state: Bit 1 (SVF) of parameter
No. 1802 = 1
Servo-off signal *SVFn (G64.6, G68.6, ...) = 0
Bit 2 (FVF) of parameter No. 1800 = 1,
or Bit 3 (FUP) of parameter No. 1802 = 1
3 With this function, it is impossible to stop the spindle
motor. To stop the spindle, cause the PMC to issue a
stop command for the spindle.
4 Never turn the motor while the MCC is off.
Otherwise, a servo alarm may be issued when the
MCC is turned on. Use the servo-off signals (SVF1
and up) to prevent the servo alarm from being issued.
5 If the power to the NC is turned on while the VRDY
OFF alarm ignore signal is set to 1, servo position
control is not turned on until the VRDY OFF alarm
ignore signal is set to 0.
6 While DVALn or DVAL is set to 1, and the servo MCC
is off, manual operation (jog feed, handle feed, step
feed) cannot be performed.
Note
NOTE
While the VRDY OFF alarm ignore signal is set to 1,
and a servo alarm other than alarm SV0013 occurs,
the control unit detects the alarm.