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FANUC Series 16/160-L Automatic Leak Check Function, Specifications Additional Manual Page 2

Additional Manual
Edit
Reco
g
nition
2／9
Date
Desi
g
n
FANUC Series 16i/160i –L
Automatic leak check function
Specifications
A-78037E
00.03.17
K.Suzuki
Contents
Date
Design
M.Sato
Title
of
Drawing
Drawing
No
Page
1. Outline
The following actions work to check gas leak of laser resonator.
i) All valves of laser oscillator are automatically shut.
ii) Gas pressure in discharge tubes is measured and logged at regular intervals.
iii) The data can be referred on diagnose screen or leak check screen.
iv) This function can be begun from any step of laser control sequence.
2. Specification
2.1. Explanation
2.1.1. Starting of Automatic leak check function
Automatic leak check function is started and Leak check mode signal (F224#2:LCKMD) is output
during Leak check mode, if Gas pressure control start signal (G222#6:RUN) is turned off "ON → OFF"
with setting Leak check signal (G224#2:LCKON) or Leak check start parameter (PRM.15153#0:LCK)
to '1'.
Table 1 ) Difference of Laser control sequence according to parameter and signal
Leak check
signal
(G224#2）
Leak check start
parameter
（PRM.15153#0）
Gas pressure control
start signal
（G222#6）
Laser control sequence
LCKON=ON OR LCK=1
ON → OFF
Leak check start
OFF → ON
Regular start sequence
LCKON=OFF AND LCK=0
ON → OFF
Regular stop sequence
OFF → ON
Regular start sequence
2.1.2. Operation of Automatic leak check function
When Automatic leak check function is started, Laser oscillator works as follows.
i) Laser gas pressure control is ended and CNC waits for turbo-blower stopping time about 75
seconds. (CNC waits, even if turbo-blower has already stopped.) CNC starts evacuation after 75
seconds.
ii) All valves of oscillator are shut after evacuation at the time set with PRM.15256 (10 minutes
normally) or Laser tube pressure (DGN905) becomes ‘0’.
Laser sequence status number (DGN908) is set to ‘51’ and All valves closed state signal
(F224#3:AVCL) is output.
All valves mean the following valves.
GRDY: Gas supply valve
PUG: Purge valve
OPV: External tube exhaust valve
BPV: By-pass valve
VEN: Exhaust valve
TWV: Three-way valve
PCV: Exhaust assistance valve
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Contents Summary of FANUC Series 16/160-L Automatic Leak Check Function, Specifications Additional Manual

  • Page 1FANUC Series16/160-L Automatic leak check function Specifications Title FANUC Series 16i/160i –L of Automatic leak check function Drawing Specifications Drawing No A-78037E 07 05.02.21 M.Sato Page 8 is changed. 06 03.10.14 M.Sato Page 5,6 are added. Page 7,8 are changed. K.Suzuki Design Contents 1／9
  • Page 21. Outline The following actions work to check gas leak of laser resonator. i) All valves of laser oscillator are automatically shut. ii) Gas pressure in discharge tubes is measured and logged at regular intervals. iii) The data can be referred on diagnose screen or leak check screen. iv) This funct
  • Page 3iii) CNC measures Laser gas pressure at regular intervals after all valves closed and logs the data from DGN954 to DGN957 as diagnose information. The first data is logged when 30 seconds has passed after all valves closed. After that the pressure data are logged 3 times at 1/3 Leak judgement time (
  • Page 4Leak check mode Gas pressure Leak judgement time PRM.15154 TLJ=3Ts(sec) PRM15256 30(sec) Ts(sec) Ts(sec) Ts(sec) +75(sec) PRM15240 t RUN ON RUN OFF AVCL=1 AP=1 Pchk1 Pchk2 Pchk3 Pchk4 (DGN954) (DGN955) (DGN956) (DGN957) Fig. 2 Sampling of gas pressure Purge completion (AP=1) Leak check mode (LCKMD=1
  • Page 52.2. Leak check screen By using this screen, necessary parameters to use the Automatic leak check function can be set. Moreover, the result of leak check can be confirmed. Switching off Run signal (G222 #6:RUN) after setting the parameters on this screen can start Automatic leak check function. 2.2.
  • Page 62.2.2. How to display Leak check screen This screen is displayed according to the following order. (1) Set parameter MNT (PRM No.15160#0) to "1". (2) Push the MDI key "OFFSET" several times, and the laser screen is displayed. (3) Push the right edge soft key (continuance menu key), and the page is c
  • Page 73. Parameters #7 #6 #5 #4 #3 #2 #1 #0 15153 LCK Data type : Bit type LCK 0 : Automatic leak check function is disabled. 1 : Automatic leak check function is enabled 15154 Leak judgement time Data type : Word type Data unit : Second Data range : 3 - 65535 The time for keeping laser gas pressure with
  • Page 85. Diagnoses 954 Gas pressure in leak check mode 1st (Pchk1) 955 Gas pressure in leak check mode 2nd (Pchk2) 956 Gas pressure in leak check mode 3rd (Pchk3) 957 Gas pressure in leak check mode 4th (Pchk4) Laser gas pressure is logged in DGN954 at 30 seconds passed since all valves shut. And from DGN
  • Page 9Supplement ) Flow chart Sequence 11 ENTRY Leak check ENTRY Turbo-blower OFF Gas pressure control OFF DGN954 - DGN957 clear YES All valves OFF Alarm 4094 Vacuum pump abnormal？ AVCL=ON NO Vacuum pump stop Laser seq. num.(DGN908)=51 75sec WAIT 30sec WAIT NO LCKON=ON or LCK=1 ? Gas pressure logging 1st