ABB MicroFlex e150 User Manual

Appendix: Safe Torque Off (STO) 177
 Technical data: Digital inputs STO1, STO2 (X3)
 STO function: data related to safety standards
* According to the categorization defined in EN ISO 13849-1:2008.
Description Unit All models
Type Opto-isolated inputs
Input voltage
Nominal
Minimum
Maximum
Active
Inactive
VDC
24
12
30
> 12
< 2
Input current (maximum, per input) mA 50
Sampling interval ms 1
Minimum pulse width µs 5
IEC 61508 EN ISO 13849-1
SIL PFH HFT SFF PTI PFD PL CCF MTTF
D
DC* Category
3
1.12 x 10
-10
/h
(0.112 FIT)
1 96.48% 10
years
1.12 x 10
-5
e75
points
20420.9
years
90% 3
Abbreviation Reference Description
CCF EN ISO 13849-1 Common Cause Failure (%)
DC EN ISO 13849-1 Diagnostic Coverage
FIT IEC 61508 Failure In Time: 1E-9 hours
HFT IEC 61508 Hardware Fault Tolerance
MTTF
D
EN ISO 13849-1 Mean Time To dangerous Failure: (The total number of life
units) / (the number of dangerous, undetected failures)
during a particular measurement interval under stated
conditions
PFD IEC 61508 Probability of Failure on Demand
PFH IEC 61508 Probability of Dangerous Failures per Hour
PL EN ISO 13849-1 Performance Level: Corresponds SIL, Levels a-e
PTI Proof Test Interval
SFF IEC 61508 Safe Failure Fraction (%)
SIL IEC 61508 Safety Integrity Level
STO IEC 61800-5-2 Safe Torque Off

ABB MicroFlex e150 Specifications

General

Brand	ABB
Model	MicroFlex e150
Category	Control Unit
Language	English