Note: If T
1
> 1a is needed in low demand mode of operation, SIL 1 / PL c levels are used
and PFD is calculated separately.
ACS880-07LC/17LC/37LC drives without a main breaker
Note: ACS880-07LC/17LC/37LC drives can be delivered without a factory-installed main
breaker. Customer-installed components are not included in the safety data calculations.
These values must be added to the calculations by the customer.
T
1
3) 4)
[a]
Mis-
sion
time
[a]
CCFHFTCat.
DC
2)
[%]
PFD
avg
PFH
1)
[1/h]
PLSCSIL /
SIL-
CL
Circuit
breaker
ACS880-
07LC/17LC/37LC
type
20/1206502>904.8E-42.8E-7d32--07LC without air
circuit breaker de-
livery
20/1206502>908.1E-47.3E-7d32--17LC/37LC
without air circuit
breaker delivery
3AXD10000097591 H
1)
PFH values are according to EN ISO 13849.
2)
In low demand mode, DC of electromechanical devices is considered as 0%, and therefore no overall DC value is claimed
in low demand mode.
3)
See the recommendation of use CNB/M/11.050 published by the European co-ordination of notified bodies for lower T
1
requirement.
4)
T
1
= 20a is used with high demand mode of operation. T
1
= 1a is used with low demand mode of operation.
Note: If T
1
> 1a is needed in low demand mode of operation, SIL 1 / PL c levels are used
and PFD is calculated separately.
￭ Safety component types
Safety component types as defined in IEC 61508-2:
• emergency stop button: type A
• safety relay(s): type A
• main contactor(s): type A
• main breaker: type A.
￭ 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.
The components that are included in the safety circuit are shown in the safety block diagrams
for different drive types.
52 Technical data
To Next Page
Loading...
