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Siemens Building Technologies Basic Documentation LMV51... CC1P7550en
HVAC Products 01.10.2003
10 Addendum 2: Connection diagram..........................................................234
11 Addendum 3: Variable speed drive (VSD) module.................................235
− General ...............................................................................................235
− Basic diagram ................................................................................. 235
− LMV51... Configuration of the basic unit (BU) ....................................235
− LMV52... configuration of....................................................................235
− the basic unit (BU) .............................................................................. 235
11.1 VSD module (VSD-M) .................................................................................236
− General ...............................................................................................236
11.1.1 Inputs / outputs............................................................................................236
− Connection diagram............................................................................236
− Release contact X73-1 / -2 .................................................................236
− Alarm input X73-3 ...............................................................................236
− Analog output to..................................................................................236
− the VSD X73-4....................................................................................236
− Speed feedback signal .......................................................................237
− Speed input X70 .................................................................................237
− Safe segregation between mains voltage and protective extra low-
voltage ................................................................................................237
− Sensor disk ..................................................................................... 237
− Speed sensor..................................................................................237
− Selection of fan motor .....................................................................237
− Fuel meter...........................................................................................238
− Fuel meter input X71 / X72 .................................................................238
11.1.2 Configuration of VSD...................................................................................238
11.1.3 Configuration of speed acquisition ..............................................................239
− Standardization ...............................................................................239
− Settling time .................................................................................... 239
11.1.4 Configuration of current interface ................................................................240
11.1.5 Configuration of fuel meter ..........................................................................240
− Pulse value gas...............................................................................240
− Pulse value oil.................................................................................240
11.1.6 Fuel meter readings..................................................................................... 241
11.1.7 Process data................................................................................................ 241
11.2 Differences to LMV51.200... and LMV51.000 / LMV51.100 ........................ 242
− Special functions Curve settings for electronic ratio control ...............242
11.3 EMC: LMV5... system – VSD ......................................................................243
11.4 Connection terminals...................................................................................244
11.5 Description of the connection terminals for the variable speed drive
module 246
12 Addendum 4: LMV52... with O2 trim control and O2 module................247
12.1 General........................................................................................................247
12.2 Functioning principle of O2 trim control ....................................................... 248
12.2.1 Air rate reduction .........................................................................................248
12.2.2 Definition of O2 setpoint ..............................................................................248
12.2.3 Lambda factor.............................................................................................. 249
12.3 Precontrol ....................................................................................................250
12.3.1 Calculation of precontrol..............................................................................250
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