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Building Technologies Basic Documentation LMV37.4... CC1P7546en
17.12.201816
10.6 Notes on settings and parameter settings ................................................... 114
11 Actuators X53 / X54 ................................................................................... 115
11.1 Function principle ......................................................................................... 115
11.2 Definition of angles ...................................................................................... 115
11.3 Referencing .................................................................................................. 116
11.3.1 Reference travel ........................................................................................... 118
11.4 Direction of rotation ...................................................................................... 120
11.5 Monitoring the actuator positions ................................................................. 121
11.6 Changing the error detection band for monitoring the actuator positions .... 123
11.7 Forced travel ................................................................................................ 123
11.8 Detection of line interruptions ...................................................................... 123
11.9 Protection against actuator mixup ................................................................ 124
11.9.1 Proposal for implementation ........................................................................ 124
12 Fan control ................................................................................................. 125
12.1 Function principle ......................................................................................... 125
12.2 Activation of VSD/PWM fan ......................................................................... 125
12.3 VSD control X74 pin 3 .................................................................................. 126
12.4 PWM fan control X64 pin 3 .......................................................................... 126
12.5 Safe separation of mains voltage and protective extra low-voltage ............. 127
12.6 Ramp time .................................................................................................... 127
12.7 Acquisition of speed ..................................................................................... 128
12.7.1 Acquisition of speed with proximity switch ................................................... 128
12.7.2 Acquisition of speed with Hall generator ...................................................... 129
12.7.3 Forced travel fan .......................................................................................... 130
12.8 Speed control ............................................................................................... 130
12.9 Speed supervision ....................................................................................... 131
12.9.1 Extended speed supervision ........................................................................ 132
12.10 Setting the parameters of VSD .................................................................... 133
12.11 Standardization of speed ............................................................................. 134
12.12 Control of fan motor with pneumatic fuel-air ratio control ............................ 138
12.13 EMC of LMV37.4 and VSD .......................................................................... 138
12.14 Special conditions for PWM fan in electronic fuel-air ratio control system ... 138
12.14.1 Characteristics PWM fan ............................................................................. 139
12.14.2 Acquisition of speed PWM fan ..................................................................... 140
12.15 Trim function ................................................................................................ 141
12.15.1 Settings and mode of operation ................................................................... 142
12.15.2 Optional internal checks ............................................................................... 143
12.15.3 External tests (optional) ............................................................................... 145
12.16 Description of connection terminals ............................................................. 147
12.16.1 VSD .............................................................................................................. 147
12.16.2 PWM fan ...................................................................................................... 147
13 Load output X74 pin 3 ............................................................................... 148
13.1 Safe separation of mains voltage and extra low-voltage ............................ 148
13.2 Modulating operation ................................................................................... 149
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