GE RSTi-EP - 3.9 Parameter Overview

Chapter 7. Detailed Descriptions of EP-19xx Modules
36 RSTi-EP Functional Safety Manual GFK-2956A
5.5.3 Specifications EP-1922
System data
Data
Process and diagnostic data depend on the network adapter used
(refer to the table in the section, Data Width of EP-19xx Modules)
Interface
RSTi-EP system bus
System bus transfer rate
48 Mbps
Safety-related data per EN ISO 13849 (Regard the entire safety chain)
Achievable safety level
PLe and Cat. 4
DC (Diagnostic Coverage)
99%
MTTFd (Mean Time To Failure dangerous)
> 100 years
Safety-related data per EN 62061 (Regard the entire safety chain)
Achievable safety level
SILCL3
PFH (Probability of Failure in 1/h)
6.27 x 10
-9
Fault reaction time
10 s
Safety-related data per EN 61508 (Regard the entire safety chain)
Achievable safety level
SIL3
PFH (Probability of Failure per Hour)
6.27 x 10
-9
HFT (Hardware Fault Tolerance)
1
SSF (Safe Failure Fraction)
98.58%
Presumed lifecycle time
20 years
Prooftest interval
No prooftest needed within the life cycle
Classification acc. To EN 61508-2:2010
Type B
Inputs
Safety inputs
2 x 2 channel
Input type
Type 3 as per IEC 61131-2
Inputs for start function
2 (manual start and auto start)
Input type
Type 3 as per IEC 61131-2
Outputs
Safety output (OSSD)
1
Output current
8 A (not for capacitive load)
Overload protection
excess temperature proof and overload-proof, short circuit proof
with external fuse
Turn-off time
20 ms
Turn-on time
< 2 s
Output SS1
1
Output current
0.5 A, overload behaviour as per IEC 61131-2
Overload protection
excess temperature proof and overload-proof, short circuit proof
with external fuse
Auxiliary outputs
3 x 2
Output current
max. 10 A (only to support the inputs dedicated inputs)