Yaskawa MP930 - Manual (Page 329)

D.3 Monitor Parameter Number 23 Alarms
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D.3 Monitor Parameter Number 23 Alarms
The following table shows the servo-related alarms for each axis.
Register
Number
Bit Alarm Name Cause Action
ILxx22 b0: SVERR Servopack error S A SERVOPACK alarm was de-
tected.
S See IWxx24 for the alarm details.
S Check for Servopack errors.
S Contact your Yaskawa representa-
tive if the problem recurs even af-
ter the Servopack is reset.
b1: OTF Forward overtravel S Forward overtravel of the Servo-
pack was detected (P-OT signal
ON). S Check the overtravel limit switch,
and bring it back in the opposite
direction after resetting the alarm.
S Check the overtravel input signal.
S Check the parameters relating to
overtravel alarm detection.
b2: OTR Reverse overtravel S Reverse overtravel of the Servo-
pack was detected (N-OT signal
ON). S Check the overtravel limit switch,
and bring it back in the opposite
direction after resetting the alarm.
S Check the overtravel input signal.
S Check the parameters relating to
overtravel alarm detection.
b3: SOTF Stored positive stroke
limit S Movement towards the positive
stored stroke limit area was de-
tected. S After checking the program and
operation, reset the alarm and
bring the switch back in the oppo-
site direction.
S Check the parameters relating to
the stored stroke limit.
b4: SOTR Stored negative
stroke limit S Movement towards the negative
stored stroke limit area was de-
tected. S After checking the program and
operation, reset the alarm and
bring the switch back in the oppo-
site direction.
S Check the parameters relating to
the stored stroke limit.
b5: SVOFF Servo power OFF S A move command was generated,
but the servo power was OFF. S After resetting the alarm, turn ON
the servo power.
b6:
TIMEOVER Positioning time ex-
ceeded S After the command was executed,
positioning could not be com-
pleted in the time set in OWxx34
(“positioning completion check
time”). S Check the parameters relating to
the servo characteristics (each type
of gain).
S Check the connections between
the Servopack and motors.
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