Safety Data; Safety Data Values; Safety Component Types; Safety Block Diagram - ABB ACS880-07 User Manual

20 Option description and instructions

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, ABB calculates new safety data and delivers it
separately to the customer.

Safety data values


The POUS switch is not included in the calculation since it is not included in the delivery.
Drive SIL / SC
module SILCL
frame
size
R6, R7 3 3
R8, R9 3 3
R10, R11 3 3
1×R8i 3 3
2×R8i 3 3
3×R8i 3 3
4×R8i 3 3
5×R8i 3 3
6×R8i 3 3
1) DC applies for both high and low demand mode of operation.
2) See the recommendation of use CNB/M/11.050 published by the European co-ordination of notified bodies for lower T
3) T = 20a is used with high demand mode of operation. T
1
interval on page 19.

Safety component types


Safety component types as defined in IEC 61508-2:
•
POUS safety relay: type A
•
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 diagram


The components that are included in the safety data calculations are shown in the safety
block diagram below (the POUS switch is not included in the calculations).
POUS
switch
PL PFD
PFH
avg
[1/h]
(T =2a)
1
e 2.7E-9 1.1E-04
e 4.1E-9 1.1E-04
e 4.2E-9 1.2E-04
e 3.1E-10 8.3E-05
e 3.1E-10 8.3E-05
e 3.3E-10 8.3E-05
e 3.4E-10 8.3E-05
e 3.5E-10 8.3E-05
e 3.6E-10 8.3E-05
= 2a/5a is used with low demand mode of operation. See also section
1
POUS
safety
relay
PFD Cat.
1)
DC
avg
[%]
(T =5a)
1
1.5E-04 >90 3
1.5E-04 >90 3
1.7E-04 >90 3
8.3E-05 >90 3
8.3E-05 >90 3
8.4E-05 >90 3
8.4E-05 >90 3
8.4E-05 >90 3
8.4E-05 >90 3
Drive
module
(STO)
HFT CCF Lifetime
[a]
1 80 20
1 80 20
1 80 20
1 80 20
1 80 20
1 80 20
1 80 20
1 80 20
1 80 20
3AXD10000097591 Rev E
requirement.
1
2)3)
T
1
[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
Proof test