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TABLE OF CONTENTS
B-64303EN-4/01
TABLE OF CONTENTS
DEFINITION OF WARNING, CAUTION, AND NOTE .................................s-1
PREFACE ....................................................................................................p-1
1
OVERVIEW ............................................................................................. 1
1.1
DIRECTIVES AND STANDARDS.................................................................. 2
1.1.1
1.1.2
1.1.3
1.1.4
1.2
DEFINITION OF TERMS............................................................................... 4
1.2.1
1.2.2
1.3
Directives..................................................................................................................2
Related Safety Standards..........................................................................................2
Risk Analysis and Evaluation...................................................................................3
Certification Test......................................................................................................3
General Definition of Terms ....................................................................................4
Definition of Terms Related to the Safety Function.................................................4
BASIC PRINCIPLE OF DUAL CHECK SAFETY ........................................... 5
1.3.1
1.3.2
Features of Dual Check Safety .................................................................................5
Compliance with the Safety Standard ......................................................................5
1.3.2.1
1.3.2.2
1.3.2.3
1.3.2.4
1.4
Latent error detection and cross-check ................................................................ 7
Safety monitoring cycle and cross-check cycle ................................................... 7
Error analysis ....................................................................................................... 8
Remaining risks ................................................................................................... 8
GENERAL INFORMATION ......................................................................... 10
2
SYSTEM CONFIGURATION................................................................. 11
3
SAFETY FUNCTIONS........................................................................... 12
3.1
3.2
APPLICATION RANGE ............................................................................... 13
BEFORE USING THE SAFETY FUNCTION ............................................... 15
3.2.1
3.2.2
3.3
STOP........................................................................................................... 16
3.3.1
3.3.2
3.3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
3.15
3.16
Important Items to Check Before Using the Safety Function ................................15
MCC off Test of the Safe Stop Function................................................................15
Stopping the Spindle Motor ...................................................................................16
Stopping the Servo Motor ......................................................................................17
Stop States ..............................................................................................................17
SAFE-RELATED I/O SIGNAL MONITORING ............................................. 19
EMERGENCY STOP................................................................................... 29
SAFE SPEED MONITORING ...................................................................... 30
SAFE MACHINE POSITION MONITORING ............................................... 32
MCC OFF TEST .......................................................................................... 34
SAFETY POSITION SWITCH FUNCTION .................................................. 37
SAFETY RELATED PARAMETERS CHECK FUNCTION........................... 39
PARAMETER LOCK FUNCTION ................................................................ 39
SEFETY POSITION ERROR MONITORING FUNCTION ........................... 40
AMPLIFIER CIRCUIT MONITORING FUNCTION....................................... 41
SAFETY BRAKE SIGNAL OUTPUT FUNCTION ........................................ 42
CPU SELF TEST FUNCTION...................................................................... 43
RAM CHECK FUNCTION............................................................................ 44
c-1