Wiring two outputs in parallel
● For redundant load control
Supported (only outputs of the same group)
● For performance increase
Supported (only outputs of the same group)
Triggering a digital input Supported
Switching frequency
● With resistive load
Max. 10 Hz
● With inductive load in accordance with IEC 947-5-1,
DC 13
Max. 0.5 Hz
Short-circuit protection of the output Electronically protected
2)
● Threshold
Typ. 04 to 5 A
Replacement fuses Fuse, 8 A/250 V, quick blow
1
To achieve maximum performance capability, distribute the high-current load between the two groups.
2
To reset a deactivated output, first set the output signal to 0 and then to 1.
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
WARNING
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.
Digital modules
4.15 Digital output module SM 422; DO 16 x DC 20-125 V/1.5 A (6ES7422-5EH10-0AB0)
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 135
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