Specifications Ep-1922 - GE RSTi-EP Functional Safety Manual

Chapter 7. Detailed Descriptions of EP-19xx Modules

5.5.3 Specifications EP-1922

System data
Data
Interface
System bus transfer rate
Safety-related data per EN ISO 13849 (Regard the entire safety chain)
Achievable safety level
DC (Diagnostic Coverage)
MTTFd (Mean Time To Failure dangerous)
Safety-related data per EN 62061 (Regard the entire safety chain)
Achievable safety level
PFH (Probability of Failure in 1/h)
Fault reaction time
Safety-related data per EN 61508 (Regard the entire safety chain)
Achievable safety level
PFH (Probability of Failure per Hour)
HFT (Hardware Fault Tolerance)
SSF (Safe Failure Fraction)
Presumed lifecycle time
Prooftest interval
Classification acc. To EN 61508-2:2010
Inputs
Safety inputs
Input type
Inputs for start function
Input type
Outputs
Safety output (OSSD)
Output current
Overload protection
Turn-off time
Turn-on time
Output SS1
Output current
Overload protection
Auxiliary outputs
Output current
36
Process and diagnostic data depend on the network adapter used
(refer to the table in the section, Data Width of EP-19xx Modules)
RSTi-EP system bus
48 Mbps
PLe and Cat. 4
99%
> 100 years
SILCL3
6.27 x 10 -9
10 s
SIL3
6.27 x 10 -9
1
98.58%
20 years
No prooftest needed within the life cycle
Type B
2 x 2 channel
Type 3 as per IEC 61131-2
2 (manual start and auto start)
Type 3 as per IEC 61131-2
1
8 A (not for capacitive load)
excess temperature proof and overload-proof, short circuit proof
with external fuse
20 ms
< 2 s
1
0.5 A, overload behaviour as per IEC 61131-2
excess temperature proof and overload-proof, short circuit proof
with external fuse
3 x 2
max. 10 A (only to support the inputs dedicated inputs)
RSTi-EP Functional Safety Manual GFK-2956A