Siemens LMV27.100x2 Basic Documentation page 88

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Building Technologies
If the external load controller via contacts is not used, it is possible to change to manual
output via the switch for switching from automatic to manual operation; this cuts the
connection to the load controller.
In that case, the LMV27 switches to the external load controller via contact.
A switch for Open/Close or stage 2/stage 3 can then be connected to the load
controller's terminals.
Basic Documentation LMV27...
9 Connection to load controllers
CC1P7541en
17.12.2018