Siemens SITOP PSE202U - Page 109

Applications
9.1 Redundancy circuit for increased system availability
SITOP expansion modules
Equipment Manual, 09.2022, A5E36605235-2-76
109
Redundancy of two power supplies with maximum rated output currents of 40 A
Two power supplies with maximum rated output currents of 40 A can be decoupled through
two SITOP PSE202U 40 A redundancy modules (6EP1961-3BA21). To do this, output "+" of
each power supply is connected to both inputs of a redundancy module ("IN 24 V-1" and "IN
24 V-2" jumpered); outputs "OUT 24 V" of the two redundancy modules must be connected in
parallel through an external connection (terminal) and connected to the load circuit.
Figure 9-4 Redundancy of two power supplies with maximum rated output currents of 40 A