Good morning

I don't have indication in a 6EP4137-3AB00-0AY0 manual ….. about parallel connection from two 6EP4137-3AB00-0AY0 ….

Do any of you information about this ?

Thank-you in advance

I couldn't find any info on it either, but considering the 2 possible cases for needing to connect in parallel 2 PSUs I have the following observations:

1. Increase current

Why would you ever need more than 40 A on a single 24V circuit???

2. Redundancy

You should use some type of diode module or redundancy decoupling module to connect the 2 sources, like one of the following:
Siemens 6EP4348-7RB00-0AX0 or 2x Phoenix Contact 2907752 (extra fancy option)