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Building Technologies
Basic Documentation LMV27...
CC1P7541en
7 Basic unit LMV27
17.12.2018
7.4 Digital
outputs
Safety-related outputs, type SI
Using a contact feedback network (CFN), these contacts are read back by the
microcomputers and checked for their correct positions.
Non-safety-related outputs, type No-SI
These outputs are not monitored by the contact feedback network and, for this reason,
can only be used for non-safety-related actuators, or actuators made safe in some other
form (e.g. alarm).
7.4.1 Output alarm
type No-SI – X3–05, pin 2
LMV...
Bild 282/0309
X3
-0
5
Alarm
Figure 22: Output alarm X3-05
Output for connection of an alarm lamp or horn.
The output is activated when the LMV27 is in the lockout position (phase 00).
This output can also be used to indicate start prevention.
7.4.2 Fan motor contactor type SI – X3–05, pin 1
LMV...
Bild 283e/1109
X3
-0
5
Fan motor contactor
Figure 23: Fan motor contactor X3-05
Output for control of a fan power contactor (200 VA). In accordance with the sequence
diagrams, the fan is on in phase 22 (refer to chapter
Sequence diagrams
).
7.4.3 Continuous fan operation – X3–05, pin 3
LMV...
Bild 284e/1010
X3
-0
5
Continuous fan operation
Figure 24: Continuous fan operation X3-05
If continuous purging is required, the fan motor contactor must be connected to
Continuous fan operation – X3-05
, pin 3. This terminal is tapped behind the unit fuse
and the safety loop (refer to chapter
Continuous fan
).