Yaskawa MP920 Motion Module - Manual (Page 368)

8 Troubleshooting
8.2.1 Alarm IL††22
8-12
„ Positive Software Limit and Negative Software Limit
„ Servo OFF (Excitation ON)
SVA-01A SVA-02A SVB-01 PO-01
Supported Supported Supported Supported
Detection Timing
• Enabled when using a motion command in Position Control Mode and is detected by the posi-
tion control section.
• Enabled after returning to the zero point or after the zero point setting is completed.
Alarm Processing
• The machine will decelerate to a stop at the software limit.
• Bit 5 (command error end) of IW††15 (Motion Command Status) will turn ON.
Errors and Causes
• A reference exceeding the software limit of the machine was issued. The motion program refer-
ence exceeded the movement range. The movement range was exceeded in manual operation.
Action Taken
• Check the program and manual operation.
• Clear the motion command code, reset the alarm, and then move the axis back to eliminate
overtravel. (References in the overtravel direction will be disabled and another alarm will
occur.)
SVA-01A SVA-02A SVB-01 PO-01
Not supported Not supported Supported Supported
Detection Timing
• Enabled only in Position Control Mode and detected if a movement command is issued with the
Servo OFF (Excitation OFF).
Alarm Processing
• The specified move command will not be executed.
• Bit 5 (command error end) of IW††15 (Motion Command Status) will turn ON.
Errors and Causes
• A movement command was issued with the Servo OFF (Excitation OFF).
(POSITIONING, EXTERNAL POSITIONING, STEP, FEED, etc.)
Action Taken
• Clear the motion command code, reset the alarm, and then turn the Servo ON (Excitation OFF).