ABB ACS380 Series, Hardware Manual

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150 Safe torque off function
Safety data
The safety data for the Safe torque off function is given below.
Note: The safety data is calculated for redundant use, and does not apply if both STO
channels are not used.
1) Use 100 years to calculate a safety loop.
2) According to EN ISO 13849-1 table E.1
• The following temperature profile is used in safety value calculations:
• 670 on/off cycles per year with ∆ T = 71.66 °C (161 °F)
• 1340 on/off cycles per year with ∆ T = 61.66 °C (143 °F)
• 30 on/off cycles per year with ∆ T = 10.0 °C (50 °F)
• 32 °C (90 °F) board temperature at 2.0% of time
• 60 °C (140 °F) board temperature at 1.5% of time
• 85 °C (185 °F) board temperature at 2.3% of time
• The STO is a type A safety component as defined in IEC 61508-2.
• Relevant failure modes:
• The STO trips spuriously (safe failure)
• The STO does not activate when requested
Frame
size
SIL/
SILCL
PL SFF
[%]
PFH
[1/h] PFD
avg
[T
1
=2a]
PFD
avg
[T
1
=5a]
MTTF
D
(1
[a]
DC
(2
[%]
Cat. SC HFT CCF Lifetime
[a]
1-phase U
N
= 200…240 V
R0 3 e >90 8.91E-9 7.40E-5 1.85E-4 2243 ≥ 90 3 3 1 80 20
R1 3 e >90 8.91E-9 7.40E-5 1.85E-4 2242 ≥ 90 3 3 1 80 20
R2 3 e >90 8.91E-9 7.40E-5 1.85E-4 2243 ≥ 90 3 3 1 80 20
3-phase U
N
= 200…240 V
R1 3 e >99 8.00E-9 6.68E-5 1.67E-4 2568 ≥ 90 3 3 1 80 20
R2 3 e >99 8.00E-9 6.68E-5 1.67E-4 2568 ≥ 90 3 3 1 80 20
R3 3 e >99 8.00E-9 6.68E-5 1.67E-4 2569 ≥ 90 3 3 1 80 20
R4 3 e >99 8.00E-9 6.68E-5 1.67E-4 2568 ≥ 90 3 3 1 80 20
3-phase U
N
= 380…480 V
R0 3 e >90 8.00E-9 6.68E-5 1.67E-4 2569 ≥ 90 3 3 1 80 20
R1 3 e >90 8.00E-9 6.68E-5 1.67E-4 2568 ≥ 90 3 3 1 80 20
R2 3 e >90 8.00E-9 6.68E-5 1.67E-4 2568 ≥ 90 3 3 1 80 20
R3 3 e >90 8.00E-9 6.68E-5 1.67E-4 2569 ≥ 90 3 3 1 80 20
R4 3 e >99 8.00E-9 6.68E-5 1.67E-4 2568 ≥ 90 3 3 1 80 20
3AXD10000320081, Rev. C