Safety data
The safety data given below is valid for the default design of the safety circuit. In case the final design
differs from the default, it is obligation of the changing person to calculate new safety data and deliver
it separately to the customer.
Safety data values
Drive module
frame size
SIL
1)
/
SILCL
SC
PL
1)
PFH
2)
[1/h] DC [%] Cat. HFT CCF Lifetime
[a]
T1
3)4)
[a]
H1 … H8
3
3
e
5.4 E-8
>90
3
1
80
20
20/1
1) The drive may be used for applications with the given SIL / PL only if the function is tested regularly
(see chapter: test interval above).
2) PFH values are according to EN ISO 13849.
3) See the recommendation of use CNB/M/11.050 published by the European coordination of notified
bodies for lower T1 requirement and also IEC61800-5-2:2016 / EN61800-5-2:2017 6.2.2.1.4 Note 2 for
guidance.
4) T1 = 20a is used with high demand mode of operation. See also section Proof test interval on page 14.
Safety component types
Safety component types as defined in IEC 61508-2:
−
POUS button: type A
−
safety relays: type A
−
drive STO circuit:
−
frame sizes H1 ... H8: type A
Safety block diagram
The components that are included in the safety circuit are shown in the safety block diagram below.
POUS
Button
POUS
Safety
Relay
Drive
module
(STO)
Relevant failure modes
Internal failures of safety relays, the POUS button and STO. These failures are included in the PFH value
of the function.
Fault exclusions
Fault exclusions (not considered in the calculations):
−
any short and open circuits in the cables of the safety circuit
−
any short and open circuits in the cabinet terminal blocks of the safety circuits.
Operation delays
POUS total delay: max. 650 ms.
General rules, notes and definitions
Validation of the safety functions
You must do an acceptance test (validation) to validate the correct operation of safety functions.
