10/05 AWB8230-1541GB
1
About this manual 5
Abbreviations and symbols 5
1 About the DF51 series 7
System overview 7
Type code 8
Rating and nameplate 8
Inspecting the items supplied 10
Layout of the DF51 11
Features of the frequency inverters 12
Selection criteria 12
Intended use 13
From DF5 to DF51 14
Service and warranty 14
2 Engineering 15
Features of the DF51 15
Connection to power supply 18
– Mains configurations 18
– Mains voltage, mains frequency 18
– Interaction with p.f. correction equipment 18
– Fuses and conductor cross-sections 18
– Residual current circuit-breakers 19
– Mains contactor 19
– Current peaks 19
– Line reactor 19
– Line filters 20
– EMC compliance 20
EMC Directive for PDS drive systems 20
– Interference immunity 20
– Emitted interference and radio interference
suppression 20
– EMC interference class 21
Motor and circuit type 21
Braking 24
–DC braking 24
– Dynamic braking 24
PID control 25
3 Installation 27
Fitting the DF51 27
– Mounting position 27
– Fitting dimensions 27
– Mounting the DF51 29
EMC compliance 29
– EMC-compliant installation 29
– Fitting a radio-interference (RFI) filter 29
– EMC measures in the control panel 30
– Earthing 31
– Cable routing 32
– Screening 33
Contents
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