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FANUC Series16i/160i-LB, Gap Control Axis High-Speed Approach Function, Specification Additional Manual Page 9

Additional Manual
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FANUC Series 16i/160i -LB
Gap control axis high-speed approach function
A – 78797E
02.05.06
Contents
Date
Design
M.Sato
Title
Drawing
Page
04 2004.07.29 M.Sato NPDS signal has been added.
03 2004.05.20 M.Sato All pages has been changed.
02 2002.09.03 M.Sato Page 7 Error in writing correction
15847 Deceleration time constant
[Data type] Word axis
[Unit of data] msec
[Valid data range] 0 to 32767
Specify the time from the approach speed to the stop..
Setting too large value to this parameter might cause touching the gap control axis to
work-piece.
Please be careful in case of changing this value.
15848 Deceleration starting deflection
[Data type] Word axis
[Unit of data] 0.001mm
[Valid data range] 0 to 32767
Specify the deflection switched from the high-speed approach operation to the standard
approach operation controlled at the speed proportional to the deflection.
When the deflection becomes smaller than this parameter, the gap control axis begins to
decelerate from the speed of the high-speed approach to the speed of the standard approach.
This parameter is effective in case of PRM No.15840#2(GDS)=0.
When PRM No.15840#2(GDS)=0 and this parameter is 0, the gap control axis high speed
approach function does not work
Setting too large value to this parameter might cause touching the gap control axis to
work-piece.
Please be careful in case of changing this value.
15853 Gap control gain
[Data type] Word axis
[Unit of data] sec
-1
[Valid data range] 0 to 32767
Specify the gap control gain to determine the trace performance of the gap control axis.
The gap control speed is determined by multiplying the deflection from the detector and the
gap control gain.
15854 Gap control gain at approaching
[Data type] Word axis
[Unit of data] sec
-1
[Valid data range] 0 to 32767
Specify the gap control gain during approaching of the gap control axis.
PRM No.15853 is used in case that this parameter is not set.
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Contents Summary of FANUC Series16i/160i-LB, Gap Control Axis High-Speed Approach Function, Specification Additional Manual

  • Page 1FANUC Series16i/160i-LB Gap control axis high-speed approach function Specification Copyright  2004 FANUC LTD. FANUC Series 16i/160i -LB Title Gap control axis high-speed approach function 04 2004.07.29 M.Sato NPDS signal has been added. Drawing A – 78797E 03 2004.05.20 M.Sato All pages has been ch
  • Page 2Outline The approach speed of the gap control function is controlled according to the value multiplied the gap control gain and the gap deflection. The larger the gap control gain is set, the faster the approach speed is and the shorter the approach time is. However, raising the gap control gain too
  • Page 3- High-speed approach operation The approach operation when the gap control axis high-speed approach function is effective is as follows. (1) When the gap control is started, the gap control axis starts the approach operation at the approach speed (PRM No.15845). Please set the acceleration time con
  • Page 4Operation at Pierce point The gap control axis can be stopped at an arbitrary position to pierce a hole while approaching. The procedure is explained with using the following example part program. (1) Specify PRM No.15840#4(LPP) for 1 and specify Pierce point stop signal (NPDS) for 1, and this opera
  • Page 5The gap control axis immediately stops without deceleration when the pierce point signal is set to 1. So, setting the piercing point signal to 1 with the axis moving at high speed might cause shock in the machine. Please slow down the gap control axis by using the deceleration beginning signal (* AP
  • Page 6Signals - Deceleration starting signal *APDEC [Classification] Input signal (High-speed DI interface) [Function] This signal makes the approach speed shift from the parameter value to the value calculated by gap control. The high-speed approach operation is ended and the gap control axis start
  • Page 7- Deceleration request receive signal NPDS [Classification] Input signal [Function] This signal notifies admitted input of Pierce point signal (LPP) to PMC. [Operation] The gap control axis is stopped if Pierce point signal is input when this signal is 1. The Pierce point signal is not acce
  • Page 8Parameter #7 #6 #5 #4 #3 #2 #1 #0 15840 LPP GDS TRB [Data type] Bit TRB Specify whether Gap control B function are enabled or disabled. 0: Disabled 1: Enabled GDS Specify the method of commanding the deceleration start of the gap control axis in the gap control axis high-speed approach function. 0:
  • Page 915847 Deceleration time constant [Data type] Word axis [Unit of data] msec [Valid data range] 0 to 32767 Specify the time from the approach speed to the stop.. Setting too large value to this parameter might cause touching the gap control axis to work-piece. Please be careful in case of changing thi
  • Page 1015855 Acceleration limit at approaching [Data type] Word axis [Unit of data] 0.1m/min2 [Valid data range] 0 to 32767 Specify the limit of acceleration for gap control speed. The servo over-current alarm may occur at gap control start, because the gap control axis starts without time constant of acce