YASKAWA JEPMC-MP2300-Y Series User Manual page 564

12 Maintenance and Inspection
12.6.2 Motion Error Details and Corrections
( 3 ) Bit 1: Positive Overtravel and Bit 2: Negative Overtravel
Detection Timing
Processing when
Alarm Occurs
Error and Cause
Correction
For a vertical axis, the following should be set at the SERVOPACK to avoid dropping and vibration at the
overtravel limit.
・An emergency deceleration stop
・Zero clamp status after the deceleration stop
( 4 ) Bit 3: Positive Software Limit and Bit 4: Negative Software Limit
Detection Timing
Processing when
Alarm Occurs
Error and Cause
Correction
( 5 ) Bit 5: Servo OFF
Detection Timing
Processing when
Alarm Occurs
Error and Cause
Correction
12-24
• Overtravel is continuously monitored by the position management section during execution of a motion
command.
• Overtravel is detected when the overtravel signal in the direction of movement turns OFF.
• The SERVOPACK performs stop processing.
The stop method and processing after stopping depends on the SERVOPACK parameter settings.
• The Command Error Occurrence in the Servo Module Command Status (IW
• MP2300 Processing
The command is canceled and the axis decelerates to a stop. Follow-up processing (each scan the current
position of the machine is adjusted to the reference position) is executed.
One of the following is possible.
• A move command that exceeded the travel limit of the machine was executed as follows:
A user program command exceeded the travel limit.
The software limit was exceeded in manual operation.
• Overtravel signal malfunction.
• Check the following.
Check the overtravel signal.
Check the program or manual operation.
• Then, after clearing the motion command code and resetting the alarm, use a return operation to eliminate
the overtravel status. (Commands in the overtravel direction will be disabled and an alarm will occur again
if one is executed.)
• Enabled when using a motion command and detected by the position management section.
• The software limits are valid after a ZRET or ZSET command has been completed.
• The axis decelerates to a stop at the software limit.
• The Command Error Occurrence in the Servo Module Command Status (IW
• A move command that exceeded a software limit of the machine was executed as follows:
A user program command exceeded the software limit.
The software limit was exceeded in manual operation.
• Check the program or manual operation.
• Then, after clearing the motion command code and resetting the alarm, use a return operation to eliminate
the software limit status. (Commands in the direction of the software limit will be disabled and an alarm
will occur again if one is executed.)
• Servo OFF status is detected when a move command is executed.
• The specified movement command will not be executed.
• The Command Error Occurrence in the Servo Module Command Status (IW
• A move command (commands for positioning, external positioning, STEP operation, JOG operation, etc.)
was executed when the SERVOPACK was Servo OFF status.
• After clearing the motion command and resetting the alarm, turn the SERVOPACK to the Servo ON status.
09 bit 3) will turn ON.
09 bit 3) will turn ON.
09 bit 3) will turn ON.