Product description
EK1960
24
Version: 1.3.1
3.7
Safety parameters
In the following tables the safety parameters are shown separately for inputs, logic and outputs. The PFH
values for the inputs, logic and outputs used must be added together for the complete safety loop. The
Safety-over-EtherCAT communication is included in the logic part.
General parameters
EK1960
Lifetime [a]
20
Prooftest Intervall [a]
-
1)
HFT
1
Classification element
2)
Type B
1. Special proof tests are not necessary during the entire lifetime of the EK1960 TwinSAFE compact con-
troller on account of the high level of diagnostic coverage.
2. Classification according to IEC 61508-2:2010 (see chapters 7.4.4.1.2 and 7.4.4.1.3)
The EK1960 TwinSAFE compact controller can be used for safety-related applications within the meaning of
IEC 62061:2005/A2:2015 up to SILCL3 and IEC 61508:2010 up to SIL 3 and EN ISO 13849-1:2015 up to
Cat. 4, PL e. (See following note for restrictions):
CAUTION
EK1960 category and performance level restrictions
• The single-channel relay output is suitable up to
Cat. 2, PL d
• The two-channel relay output (use of two relay contacts in series) is suitable up to
Cat. 3, PL d
or
Cat. 4,
PL e
, depending on the number of actuations. Cat. 4, PL e requires an actuation at least
once per
month
, Cat. 3, PL d at least
once per year
.
• The safe input for the safety mat operation mode is limited to
Cat. 2, PL d
.
Further information on calculating or estimating the MTTF
D
value from the PFH
D
value can be found in the
TwinSAFE application manual or in EN ISO 13849-1:2015, Table K.1.
Relay output safety parameters (Cat. 4 – two-channel)
The following table contains the safety parameters for the two-channel relay output. This must be added to
the logic and input value to determine the total PFH value.
One actuation of the relay per hour is assumed for the calculation.
Relay output parameters (Cat. 4 – two-channel)
Value
PFH
D
1.46 E-09
PFD
G
1.48 E-06
MTTF
D
high
DC
avg
high
Performance Level
PL e
Category
4
SIL
3
Relay output safety parameters (Cat. 2 – single-channel)
The following table contains the safety parameters for the single-channel relay output. This must be added to
the logic and input value to determine the total PFH value.
One actuation of the relay per hour is assumed for the calculation.
Содержание EK1960 Series
Страница 1: ...Operating Instructions for EK1960 TwinSAFE Compact Controller 1 3 1 2019 01 28 Version Date...
Страница 2: ......
Страница 6: ...Table of contents EK1960 6 Version 1 3 1...
Страница 58: ...Operation EK1960 58 Version 1 3 1 Fig 51 Safety parameters of the input modules...
Страница 102: ...Operation EK1960 102 Version 1 3 1 Fig 131 Group Status Online ERROR Fig 132 Group Status Online STOP...
Страница 140: ...Appendix EK1960 140 Version 1 3 1 5 2 Certificates...