Siemens Simatic S7-400 - Manual (Page 184)

Digital Modules
4-62
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
4.17 Digital Output Module SM 422;
DO 16 24 VDC/2 A; (6ES7422-1BH11-0AA0)
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.
A Note about Commissioning
The following technical feature applies to the digital output module SM 422;
DO 16
24 VDC/2 A with the order number 6ES7 422-1BH11-0AA0 but not to the
digital output module SM 422; DO 16 24 VDC/2 A with the order number
6ES7 422-1BH10-0AA0:
To commission the module, it is no longer necessary to apply load voltage (1L+
and 3L+, for example,) to each group of 8 outputs. The module is fully operative
even if only one group is supplied with L+.
Note
It is no longer possible to switch off all the outputs by disconnecting a single L+
supply as might have been the case with the previous module
(6ES7 422-1BH10-0AA0)L+.