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System FMEA of Safe Servo Stop Function Additional Manual Page 1

Additional Manual
Safe_Servo_Stop_FMEA01.doc; A-80495-106; rev.01; 24 March,2005
(1/3)
System FMEA of Safe Servo Stop function
Authors A. Hirai / SLB51
Date of document release 24.March.2005
Document number A-80495-SL-106
Revision Rev 01
File name SAFE_SERVO_STOP_FMEA01
Company FANUC LTD
Address 3580 Komanba, Shibokusa, Oshino-mura,
Minamitsuru-gun,Yamanashi 401-0597 JAPAN
Contents:
This document shows the fault insertion test result.
Revision 01 24-March.2005 Newly released
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Contents Summary of System FMEA of Safe Servo Stop Function Additional Manual

  • Page 1System FMEA of Safe Servo Stop function Authors A. Hirai / SLB51 Date of document release 24.March.2005 Document number A-80495-SL-106 Revision Rev 01 File name SAFE_SERVO_STOP_FMEA01 Company FANUC LTD Address 3580 Komanba, Shibokusa, Oshino-mura, Minamitsuru-gun,Yamanashi 401-0597 JAPAN Contents: T
  • Page 2FMEA of Safe Servo Stop Function 1. Application System DOFEXT 24V Check the logic between DOFEXT and AS. 5V (Correct condition is as follows.)(*1) (a) DOFEXT=0, AS=1 (b) DOFEXT=1, AS=0 0V AS GDL Check double signals independently.(*2) (Lock Status) Check the relation ORQ, GDL and SGD. (Correct condi
  • Page 32. Failure Mode Evaluated Analysis Fault ORQ DOFEXT AS *LGD SGD SVEN Result assumption close 1(off) 1 unlock 0 0 Fixed AS=1 PMC detects the (PWM off) (open) Inconsistency between DOFEXT and AS.(*1) open 0(on) 1 unlock 0 0 Fixed AS=1 When door is closed, (PWM off) (open) PMC detects the Inconsistency