20
Option description and instructions
3ADW0005Q964 E-Stop cat.1 without opening mains contactor en b
Intentional misuse
The safety circuit is not designed to protect a machine against intentional misuse
Decommissioning
When you decommission an emergency stop circuit or a drive, make sure that the safety of the machine
is maintained until the decommissioning is complete.
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 /
SILCL
SC
PL PFH
1)
[1/h] DC
2)
[%]
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) PFH values are according to EN ISO 13849.
2) DC depends on the used STO mode and directly reflects to needed test interval.
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 19.
Safety component types
Safety component types as defined in IEC 61508-2:
−
emergency stop button: type A
−
safety relays: type A
−
drive STO circuit:
−
frame sizes H1 ... H5: type A
Safety block diagram
The components that are included in the safety circuit are shown in the safety block diagram below.
E-Stop
Button
E-Stop
Safety
Relay
Drive
module
(STO)
Relevant failure modes
Internal failures of safety relays, the emergency stop button and STO. These failures are included in the
PFH value of the function.
