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Siemens Simatic S7-400 User Manual

Page 181

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Digital Modules

4-59

S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07

4.16

Digital Output Module SM 422;

DO 16

24 VDC/2 A;

(6ES7422-1BH10-0AA0)

Characteristics

The digital output module SM 422; DO 16

24 VDC/2 A has the following

features.

16 outputs, isolated in two groups of 8

2 A output current

24 VDC rated load voltage

The status LEDs also indicate the system status even when the front connector is
not inserted.

!

Caution

To commission the module, the rated load voltage must be applied at least once to
each group of 8 outputs (e.g. connection of 1L and 3L). If voltage is not applied to
a group due, for example, to 1L and 2L failing, all the outputs switch off, even
those in the second group. The status LED continues to function in the same way.

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