Siemens SIMATIC S7-1500 Manual page 21

Wiring
Wiring of the outputs for channels 0 and 4 for inductive load
If you set the channel 0 and channel 4 for the pulse width modulation mode, then you need
to wire the outputs CH0 and CH4 with an external diode (blocking voltage U
through current I
Figure 3-2
20
> 1.5 A); see figure below.
F
Wiring of the outputs for inductive load
DQ 8x24VDC/2A HF Digital Output Module (6ES7522-1BF00-0AB0)
> 60 V; let-
R
Manual, 06/2018, A5E03485650-AF