Siemens LMV37.400A2 - Page 8

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Building Technologies Basic Documentation LMV37.4... CC1P7546en
HVAC Products Contents 01.12.2009
9.3.6 Setting the minimum and maximum output ......................................................83
9.4 Multistage operation ...........................................................................................84
9.4.1 Definition of curves .............................................................................................84
9.4.2 Running speed....................................................................................................84
9.4.3 Adjustment of output...........................................................................................85
9.4.4 Changing to the running position.......................................................................85
9.4.5 Running position .................................................................................................85
9.4.6 Restriction of the modulation range...................................................................86
9.5 End of running position.......................................................................................86
9.6 Setting and parameter setting notes .................................................................87
10 Actuators X53 / X54..........................................................................................88
10.1 Function principle................................................................................................88
10.2 Definition of angles .............................................................................................88
10.3 Referencing.........................................................................................................89
10.3.1 Reference travel..................................................................................................90
10.4 Direction of rotation.............................................................................................92
10.5 Monitoring the positions .....................................................................................93
10.6 Changing the error detection band for monitoring the positions .....................94
10.7 Forced travel .......................................................................................................94
10.8 Detection of open-circuit.....................................................................................94
10.9 Protection against actuator mixup .....................................................................95
10.9.1 Proposal for implementation ..............................................................................95
11 Fan control.........................................................................................................96
11.1 Function principle................................................................................................96
11.2 Activating the VSD / PWM fan ...........................................................................96
11.3 VSD control X74.3 ..............................................................................................97
11.4 PWM fan control X64.3.......................................................................................97
11.5 Safe separation of mains voltage and protective extra low-voltage................97
11.6 Ramp time ...........................................................................................................98
− For VSD operation.....................................................................................98
11.7 Acquisition of speed............................................................................................99
11.7.1 Acquisition of speed with proximity switch ........................................................99
− Speed input X74.4 .....................................................................................99
11.7.2 Acquisition of speed with Hall generator........................................................ 100
11.8 Speed control ................................................................................................... 101
11.9 Speed supervision ........................................................................................... 101
11.10 Parameterizing of the VSD.............................................................................. 102
11.11 Standardization of speed................................................................................. 103
− Automatic speed standardization .......................................................... 103
11.12 Control of fan motor with pneumatic air-fuel ratio control ............................. 105
11.13 EMC LMV37.4... – VSD................................................................................... 106
11.14 Description of the terminals............................................................................. 107
11.14.1 VSD................................................................................................................... 107
11.14.2 PWM fan........................................................................................................... 107