Title 90D3 / 90E3
Learning Control Operator’s Manual
A - 63639E - 108
01 ’05.04.20 N.Sonoda Newly designed Sheet 051
Edit Date Design Description / 064
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
You can confirm 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 PS alarm
(N179) at the finish G05
• The delay of High-speed remote buffer
• The above ITP delay alarm
9-2. Position check
You can check the integrated value of command pulses that Servo software receives from CNC, and the
integrated value of position feedback pulses on DGN screen.
• DGN No.360 Integrated value of command pulses without compensation that CNC send to Servo.
• DGN No.362 Integrated value of command pulses that Servo software receives from CNC.
• DGN No.363 Integrated value of position feedback pulses.
9-3. 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”
• ” Control sequence of Back-up module for power failure”
• ” Connection of Back-up module for power failure”
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)
• ” Skip of high-speed cycle cutting Specification” (Option)