Fail-Safe Modules 
  7.8 1 F-RO DC24V/AC24..230V/5A Digital Electronic Module 
ET 200S Distributed I/O System - Fail-Safe Modules 
Installation and Operating Manual, 08/2008, A5E00103686-07 
177 
Technical Specifications 
•  Symmetrical (L+ to M) 
+ 1 kV; 1.2/50 μs 
•  Asymmetrical (L+ to PE, M to PE) 
+2 kV; 1.2/50 μs 
Protection of inputs and outputs from surge in 
accordance with IEC 61000-4-5 with external 
protection elements only 
 
•  Symmetrical (L+ to M) 
+1 kV; 1.2/50 μs 
•  Asymmetrical (L+ to PE, M to PE) 
+2 kV; 1.2/50 μs 
*: In order to achieve the specified cable length, you must route the P and M-signal lines in a cable or 
a sheathed cable. 
**: Operating below the permissible supply voltage is only permissible for the repair time. See chapter 
"
Introduction (Page 61)." 
***: For more information on the requirements for sensors and actuators see 
"Wiring and Fitting 
Modules"
. 
7.8  1 F-RO DC24V/AC24..230V/5A Digital Electronic Module 
7.8.1  Properties of the EM 1 F-RO DC24V/AC24..230V/5A 
Order Number 
6ES7138-4FR00-0AA0 
Properties 
The 1 F-RO DC24V/AC24..230V/5A digital electronic module disposes of the following 
properties: 
●  1 relay output (2 2-channel contacts) 
●  Output current 5 A 
●  Rated load voltage 24 VDC and 24 VAC to 230 VAC 
●  Status display for output (green LED) 
●  safety class SIL3/Category 4/PLe can be achieved if the F-RO module is controlled by a 
fail-safe output (for example, by EM 4F-DO DC24V/2A PROFIsafe)