Postpurging In The Lockout Position - Siemens LMV27.100x2 Basic Documentation


62/219
Building Technologies

7.5.3.12. Postpurging in the lockout position

Parameter 190 can be used to move the actuators (actuators or VSD) to the postpurge
position while they are in the lockout position.
No. Parameter
190 Postpurging in lockout position
0 = deactivate (no-load position)
1 = active (postpurge position)
When active, the Alarm in the event of start prevention function (parameter
210) is only possible to a limited extent!
Note!
The LMV27 simply moves the actuators (actuators or VSD) to the postpurge position.
A fan or VSD release contact cannot be controlled, as the alarm relay of the LMV27
cuts off the power supply to the outputs. With the Alarm in the event of start
prevention function, an external circuit that may be present for controlling the fan /
VSD release contact for postpurging in the lockout position is activated via start
prevention in standby mode.
Fan continuous purging
Fan normal operation
Figure 35: Application example of postpurging in the lockout position with fan but without VSD
The duration of postpurging in the lockout position can be set via the delay time of K3.
Attention!
When the Postpurging in the lockout position function is used, the fan may only
be powered via a contactor and must not be connected directly to LMV2 (X3-05
pin 1)!
Basic Documentation LMV27...
7 Basic unit LMV27
LMV...
K2 K3
K1 K2
Bild 429e/0913
N N
K1
L
K3
N
CC1P7541en
17.12.2018