
Title 9083 / 9087 / 90A3 / 90A7
Learning Control Operator’s Manual
03 '00.06.07 N.Sonoda Qualified 2'nd issue Draw No.
02 ’99.01.14 K.Maeda Qualified 1’st issue
A - 63639E - 034
01 ’97.12.08 K.Maeda Newly designed Sheet 052
Edit Date Design Description / 070
9. Cautions
9-1. ITP Delay Alarm
In case that CNC operation is delayed during G05 (High speed cycle cutting or High speed DNC operation),
work piece is not processed normally. For this reason, High speed axis checks this delay (ITP delay) during
G05.
You can confirm that whether this delay happened by bit 1 of ALARM4 in servo tuning screen. If CNC
operation has been delayed once, this bit is 1. This bit is not cleared until power off.
On the other hand, when No.7501#7 = 1, CNC is monitoring the following cases, and displays the alarm at
the finish G05.
• The delay of High speed remote buffer
• The above ITP delay alarm
9-2. Countermeasure for power failure
In case that power failure happens during synchronous operation such as G05, there is a possibility that work
piece or cutting tool breaks because of no keeping synchronous relation. As the countermeasure of this case,
you need to detect power failure and to retract to safety position by other axis independent from G05
execution, and to stop G05 operation keeping synchronous relations among axes.
By using both “Back-up module for power failure” and “Signal retract function”, you can rapidly get under
shelter in keeping synchronous operation after power failure. Refer the following manual.
• ” Signal retract Specification” (Software Laboratory)
• ” Control sequence of Back-up module for power failure” (Servo Laboratory)
• ” Connection of Back-up module for power failure” (Servo Laboratory)
9-3. Retract
When you need to stop the machine due to some reason, if RESET used during G05, there is a possibility to
damage the work-piece or tool. For this case, the retract movement by external signal is able to stop safely
the machine by the following functions.
Refer to the following manual.
• ” Retract of high-speed cycle cutting Specification” (Option) (Software Laboratory)
• ” Skip of high-speed cycle cutting Specification” (Option) (Software Laboratory)
9-4. HRV control
9083/01 and 9087/01 don’t not support a part of HRV control in standard series (9080 series etc). Therefore
you must set the following parameters to 0 to avoid HC alarm in this edition after parameter loading
automatically.
You don’t need to set this in 9083/02 or later, 9087/02 or later, 90A3 and 90A7 series because those series
support all functions of HRV control.
• Set No.2056 to 0. ← Case that standard parameter is negative.
• Set No.2127 to 0.
• Set No.2128 to 0.
• Set No.2129 to 0.