BECKHOFF TwinSAFE User Manual
Page 3

Table of contents
Application Guide TwinSAFE
1
Table of contents
1
Foreword
4
1.1
Notes on the manual
4
1.1.1
Disclaimer
4
1.1.2
Trademarks
4
1.1.3
Patent Pending
4
1.1.4
Copyright
4
1.2
Safety instructions
5
1.2.1
Delivery state
5
1.2.2
Operator's obligation to exercise diligence
5
1.2.3
Description of safety symbols
6
1.2.4
Explanation of terms
6
2
Circuit examples
7
2.1
ESTOP function variant 1 (Category 3, PL d)
7
2.1.1
Parameters of the safe input and output terminals
7
2.1.2
Block formation and safety loops
8
2.1.3
Calculation
8
2.2
ESTOP function variant 2 (Category 3, PL d)
13
2.2.1
Parameters of the safe input and output terminals
13
2.2.2
Block formation and safety loops
14
2.2.3
Calculation
14
2.3
ESTOP function variant 3 (Category 4, PL e)
19
2.3.1
Parameters of the safe input and output terminals
19
2.3.2
Block formation and safety loops
20
2.3.3
Calculation
20
2.4
ESTOP function variant 4 (Category 4, PL e)
25
2.4.1
Parameters of the safe input and output terminals
25
2.4.2
Block formation and safety loops
26
2.4.3
Calculation
26
2.5
ESTOP function variant 5 (Category 4, PL e)
31
2.5.1
Parameters of the safe input and output terminals
31
2.5.2
Block formation and safety loops
32
2.5.3
Calculation
32
2.6
ESTOP function variant 6 (Category 3, PL d)
37
2.6.1
Parameters of the safe input and output terminals
37
2.6.2
Block formation and safety loops
38
2.6.3
Calculation
38
2.7
ESTOP function variant 7 (Category 4, PL e)
43