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Siemens Building Technologies  Basic Documentation LMV5...  CC1P7550en 
HVAC Products    13.08.2004 
 
−  Status inputs (CFN).........................................................................203 
−  Load on terminals «outputs» ..............................................................203 
−  Total load on contacts ..................................................................... 203 
−  Load on individual contacts .................................................................204 
−  Fan motor contactor ........................................................................204 
−  Alarm output....................................................................................204 
−  Ignition transformer .........................................................................204 
−  Fuel valves (gas).............................................................................204 
−  Fuel valves (oil) ............................................................................... 204 
−  Cable lengths......................................................................................204 
−  Cross-sectional areas .........................................................................204 
−  Fuses used in the LMV5... basic unit.................................................. 204 
15  Dimensions ................................................................................................205 
−  LMV5... ...............................................................................................205 
−  AZL5... ................................................................................................ 205 
16  Addendum 1: List of fault status messages of LMV5... system............206 
17  Addendum 2: Connection diagram..........................................................251 
18  Addendum 3: Variable speed drive (VSD) module.................................252 
−  General ............................................................................................... 252 
−  Basic diagram .................................................................................252 
−  LMV51... Configuration of the basic unit (BU) .................................... 252 
−  LMV52... configuration of the basic unit (BU) ..................................... 252 
18.1  VSD module ................................................................................................253 
−  General ............................................................................................... 253 
18.1.1  Inputs / outputs............................................................................................253 
−  Connection diagram............................................................................253 
−  Release contact X73-1 / -2 ................................................................. 253 
−  Alarm input X73-3 ............................................................................... 253 
−  Analog output to the VSD X73-4......................................................... 253 
−  Speed feedback signal ....................................................................... 254 
−  Speed input X70 ................................................................................. 254 
−  Safe segregation between mains voltage and protective extra low-
voltage ................................................................................................254
 
−  Sensor disk .....................................................................................254 
−  Speed sensor .................................................................................. 254 
−  Selection of fan motor .....................................................................254 
−  Fuel meter...........................................................................................255 
−  Fuel meter input X71 / X72 .................................................................255 
18.1.2  Configuration of VSD...................................................................................255 
18.1.3  Configuration of speed acquisition ..............................................................256 
−  Standardization ...............................................................................256 
−  Note................................................................................................. 256 
−  Settling time ....................................................................................257 
18.1.4  Configuration of current interface ................................................................258 
18.1.5  Configuration of fuel meter .......................................................................... 258 
−  Pulse value gas...............................................................................258 
−  Pulse value oil ................................................................................. 258 
18.1.6  Fuel meter readings..................................................................................... 259 
18.1.7  Process data................................................................................................ 259