Safety Data Values; Safety Component Types; Safety Block Diagrams - ABB ACS880 Series Manual

62 Technical data

Safety data values

￭
This safety data is valid for the default design of the safety circuit described in this manual.
If the final design is different from the default, ABB calculates new safety data and delivers
it separately to the customer.
The safety data calculations are based on the assumption that the emergency stop is used
once a month.
The SLS switch, the safety encoder and other possible safety devices are not included in
the calculation. The FSE module is included in the calculation. The same safety data values
apply to the SLS, SMS and SSM functions.
Drive module SIL /
frame size SIL-
CL
R6, R7 3
R8, R9 3
R10, R11 3
1×R8i 3
2×R8i 3
3×R8i 3
4×R8i 3
5×R8i 3
6...8×R8i 3
1) PFH values are according to EN ISO 13849.
2) DC for low demand mode is 90% (determined by the DC of the worst component in the subsystem).
3) See the Recommendation of Use CNB/M/11.050 published by the European coordination of notified bodies for lower T
requirement.
4) T
= 20a is used with high demand mode of operation. T
1

Safety component types

￭
Safety component types as defined in IEC 61508-2:
• FSO module: type B
• FSE module: type B
• drive STO circuit:
• frame sizes R1...R9 and drives with R1i...R7i inverter modules: type A
• frame sizes R10 and R11 and drives with R8i inverter modules: type B.

Safety block diagrams

￭
The components that are included in the safety data calculations are shown in the safety
block diagram(s). The components not included in the delivery are not included in the safety
data calculations.
1)
SC PL PFD
PFH
(T
[1/h]
3 e 6.6E-9 7.8E-05
3 e 6.6E-9 7.8E-05
3 e 7.1E-9 8.4E-05
3 e 3.4E-9 5.2E-05
3 e 3.5E-9 5.2E-05
3 e 3.5E-9 5.3E-05
3 e 3.5E-9 5.3E-05
3 e 3.5E-9 5.3E-05
3 e 3.5E-9 5.3E-05
2)
PFD
DC
avg avg
=2a) (T =5a)
1 1
[%]
1.7E-04 ≥90
1.7E-04 ≥90
1.8E-04 ≥90
1.0E-04 ≥90
1.0E-04 ≥90
1.0E-04 ≥90
1.0E-04 ≥90
1.0E-04 ≥90
1.1E-04 ≥90
= 2a/5a is used with low demand mode of operation.
1
Cat. HFT CCF Mis-
sion
time
[a]
3 1 80 20
3 1 80 20
3 1 80 20
3 1 80 20
3 1 80 20
3 1 80 20
3 1 80 20
3 1 80 20
3 1 80 20
3AXD10000097591 J
3) 4)
T1
[a]
20/5/2
20/5/2
20/5/2
20/5/2
20/5/2
20/5/2
20/5/2
20/5/2
20/5/2
1