Dual Check Safety Operator's Manual

OPERATOR’S MANUAL
B-63494EN/01

ȦNo part of this manual may be reproduced in any form.
ȦAll specifications and designs are subject to change without notice.
In this manual we have tried as much as possible to describe all the
various matters.
However, we cannot describe all the matters which must not be done,
or which cannot be done, because there are so many possibilities.
Therefore, matters which are not especially described as possible in
this manual should be regarded as ”impossible”.

B-63494EN/01 SAFETY PRECAUTIONS
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SAFETY PRECAUTIONS
This manual includes safety precautions for protecting the user and
preventing damage to the machine. Precautions are classified into
Warning and Caution according to their bearing on safety. Also,
supplementary information is described as a Note. Read the Warning,
Caution, and Note thoroughly before attempting to use the machine.
WARNING
Applied when there is a danger of the user being
injured or when there is a damage of both the user
being injured and the equipment being damaged if
the approved procedure is not observed.
CAUTION
Applied when there is a danger of the equipment
being damaged, if the approved procedure is not
observed.
NOTE
The Note is used to indicate supplementary
information other than Warning and Caution.
- Read this manual carefully, and store it in a safe place.

B-63494EN/01 TABLE OF CONTENTS
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TABLE OF CONTENTS
SAFETY PRECAUTIONS
SAFETY PRECAUTIONSSAFETY PRECAUTIONS
SAFETY PRECAUTIONS................................
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11
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1 OVERVI
OVERVIOVERVI
OVERVIEW
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11
1
1.1 DIRECTIVE AND STANDARDS ..................................................................................................... 3
1.1.1 Directives.................................................................................................................................... 3
1.1.2 Related Safety Standards.......................................................................................................... 3
1.1.3 Risk Analysis and Evaluation................................................................................................... 3
1.1.4 Certification Test ....................................................................................................................... 4
1.2
DEFINITION OF TERMS ................................................................................................................ 5
1.2.1 General Definition of Terms ..................................................................................................... 5
1.2.2 Definition of Terms Related to the Safety Function................................................................ 5
1.3
BASIC PRINCIPLE OF DUAL CHECK SAFETY .......................................................................... 6
1.3.1 Features of Dual Check Safety ................................................................................................. 6
1.3.2 Compliance with the Safety Standard (EN954-1, Category 3) ............................................... 7
1.3.2.1 Latent error detection and cross-check ...........................................................................................8
1.3.2.2 Safety monitoring cycle and cross-check cycle ................................................................................9
1.3.2.3 MCC off Test .....................................................................................................................................9
1.3.2.4 Error analysis .................................................................................................................................10
1.3.2.5 Remaining risks..............................................................................................................................10
1.4 GENERAL INFORMATION........................................................................................................... 12
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2 SYSTEM CONFIGURATIO
SYSTEM CONFIGURATIOSYSTEM CONFIGURATIO
SYSTEM CONFIGURATION
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33
3 SAFETY FUNCTIONS
SAFETY FUNCTIONSSAFETY FUNCTIONS
SAFETY FUNCTIONS ................................
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1616
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3.1 APPLICATION RANGE ................................................................................................................. 17
3.2 BEFORE USING THE SAFETY FUNCTION............................................................................... 20
3.2.1 Important Items to Check Before Using the Safety Function .............................................. 20
3.2.2 MCC off Test of the Safe Stop Function ................................................................................. 20
3.3
STOP ................................................................................................................................................ 21
3.3.1 Stopping the Spindle Motor .................................................................................................... 21
3.3.2 Stopping the Servo Motor........................................................................................................ 22
3.3.3 Stop States ............................................................................................................................... 22
3.4
SAFE-RELATED I/O SIGNAL MONITORING ............................................................................ 24
3.5 EMERGENCY STOP ...................................................................................................................... 29
3.6 SAFE SPEED MONITORING........................................................................................................ 30
3.7 SAFE MACHINE POSITION MONITORING .............................................................................. 31