260/301 
Siemens Building Technologies  Basic Documentation LMV5...  CC1P7550en 
HVAC Products  18 Addendum 3: Variable speed drive (VSD) module  13.08.2004 
18.2  Differences to LMV51.200... and LMV51.000... / 
LMV51.100 
 
6.3.1 Menu structure 
 
Selection of 1) will take you to: 
Selection menu «GasSettings» 
Only the data associated with the currently active type of fuel can be parameterized. 
 
S p e c i a l P o s i t i o n s 
1) 
C u r v e  P a r a m   
2) 
L o a d  L i m i t s  
3) 
A u x A c t u a t o r   
4) 
 
Selection of 1) (Home Pos, Prepurge Pos...), 3) and 4) will take you to the standard 
parameterizations of the specified parameters. 
 
Selection of 4) will take you to: 
Standard parameterization «Auxiliary Actuator» 
Here, the function of the auxiliary actuator can be separately selected for each type of 
fuel: deactivated / activeDamper / VSD active. 
 
A u x A c t u a t o r  
C u r  r  :  d e a c  t  i  v a  t  e d 
N e w :    V S D    a c t  i  v a t 
   
 
With «VSD active», the VSD takes the place of the auxiliary actuator (menus «Aux Ac-
tuator», «Auxiliary»). The available setting values reach from 0 to 100 %. 
 
6.3.2  Changes when setting ratio control via manual control 
 
The system extrapolates the VSD to a minimum speed of 
10 % and a maximum speed 
of 100 %. 
 
100 %
90°
7550d07e/0704
Pos.
Load
0 %
0°
AUX
FUEL
AIR
Ignition = low fire
 
 
Change of load / position resulting from an automatically entered point 
Special functions 
Curve settings for 
electronic ratio control