Siemens SIMATIC S7-400 Reference Manual page 135

Wiring two outputs in parallel
● For redundant load control
● For performance increase
Triggering a digital input
Switching frequency
● With resistive load
● With inductive load in accordance with IEC 947-5-1,
Short-circuit protection of the output
● Threshold
Replacement fuses
To achieve maximum performance capability, distribute the high-current load between the two groups.
1
To reset a deactivated output, first set the output signal to 0 and then to 1.
2
If output signal 1 is written to a deactivated output and the short-circuit remains, additional interrupts
are generated (provided the diagnostic interrupt parameter was set).
Note
If the power supply is switched on by means of a mechanical contact, a voltage pulse may
occur at the outputs. The transient pulse lasts a maximum of 0.5 ms.
Changing fuses
This can result in injury.
If you change a fuse without removing the front connector of the module, you could be injured
by an electric shock.
Consequently, always remove the front connector before you change the fuse.
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08
4.15 Digital output module SM 422; DO 16 x DC 20-125 V/1.5 A (6ES7422-5EH10-0AB0)
DC 13
WARNING
Supported (only outputs of the same group)
Supported (only outputs of the same group)
Supported
Max. 10 Hz
Max. 0.5 Hz
Electronically protected
2)
Typ. 04 to 5 A
Fuse, 8 A/250 V, quick blow
Digital modules
135