Fail-Safe Modules   
7.7 4 F-DO DC24V/2A PROFIsafe digital electronic module 
  ET 200S Distributed I/O System - Fail-Safe Modules 
174  Installation and Operating Manual, 08/2008, A5E00103686-07 
Generally Applicable Information on Diagnostics 
For information on diagnostics that pertains to all fail-safe modules (for example, for reading 
diagnostics functions, or passivating channels), refer to 
"Diagnostics"
 chapter in this manual.  
See also 
Fault Diagnostics (Page 43) 
7.7.6  Technical Specifications of the EM 4 F-DO DC24V/2A PROFIsafe 
Overview    
 
Technical Specifications 
Dimensions and Weight 
Dimensions W x H x D (mm)  30 x 81 x 52 
Weight  Approx. 85 g 
Data for Specific Module 
Number of outputs (P/M switching)  4 
Assigned address area   
•  I/O area for inputs 
5 bytes 
•  I/O area for outputs 
5 bytes 
Length of cable*   
•  Unshielded 
200 m, maximum 
•  Shielded 
200 m, maximum 
Maximum achievable safety class   
•  In accordance with IEC 61508 
SIL3 
•  In accordance with EN 954 
Category 4 
•  In accordance with ISO 13849 
PLe 
Safety characteristics    SIL3 
•  Low demand mode (average probability of 
failure on demand) 
< 1.00E-05 
•  High demand/continuous mode (probability of 
a dangerous failure per hour) 
< 1.00E-10 
•  Acceptance ID 
FM, cULus, ATEX, CE, C-Tick 
Voltages, Currents, Potentials 
Rated supply voltage L+  24 VDC 
•  permissible range ** 
20.4 V to 28.8 V 
•  Power loss ride-through of L+ 
None 
•  Power loss ride-through of internal P5 
5 ms 
•  Reverse polarity protection 
No