Application: Connection Of Loads Per Digital Output To L+ And M, Pm-Switching Mode - Siemens SIMATIC S7-1500 Manual

Applications of the F-I/O module

5.3 Application: Connection of loads per digital output to L+ and M, PM-switching mode

In order to achieve SIL3/Cat.4/PLe with this wiring, you must install a qualified actuator, for
example, in accordance with IEC 60947.
Parameter assignment
Assign the following parameter for the corresponding channel group:
Table 5- 1
Parameter
Operating mode of the output
5.3 Application: Connection of loads per digital output to L+ and M, PM-
switching mode
You can connect two relays using one fail-safe digital output. The following conditions should
be kept in mind:
● Same reference potential
● The normally open contacts of the two relays must be connected in series.
This configuration achieves SIL3/Cat.4/PLe (process status readback required).
34
WARNING
Parameter
PM-switching mode
Digital output module F-DQ 8x24VDC/2A PPM (6ES7526-2BF00-0AB0)
Manual, 01/2016, A5E03858037-AA