ABB ACS480 - Checking the Converter Age

139Frame R4 (bottom & rear) - UL type 1 kit installed .......................................
12 Resistor braking
141Contents of this chapter ..........................................................................
141Safety ...............................................................................................
141Operating principle ................................................................................
141Selecting the brake resistor .....................................................................
143Reference brake resistors ....................................................................
143Definitions ...................................................................................
144Selecting and routing the brake resistor cables ..............................................
144Minimizing electromagnetic interference ...................................................
144Maximum cable length ........................................................................
144Placing custom brake resistors .................................................................
144Protecting the system in brake circuit fault situations .......................................
144Protecting the system in cable and brake resistor short-circuit situations ............
145Protecting the system against thermal overload ..........................................
145Mechanical and electrical installation of brake resistor ......................................
146Mechanical installation .......................................................................
146Electrical installation ..........................................................................
146Measuring the insulation ..................................................................
146Connecting power cables .................................................................
146Connection the control cables ...........................................................
146Start-up .............................................................................................
13 The Safe torque off function
147Contents of this chapter ..........................................................................
147Description .........................................................................................
148Compliance with the European Machinery Directive .....................................
149Wiring ...............................................................................................
149Connection principle ..........................................................................
149Single ACS480 drive, internal power supply ...........................................
150Single ACS480 drive, external power supply ..........................................
150Wiring examples ...............................................................................
150Single ACS480 drive, internal power supply ...........................................
151Single ACS480 drive, external power supply ..........................................
152Multiple ACS480 drives, internal power supply ........................................
153Multiple ACS480 drives, external power supply .......................................
153Activation switch ...............................................................................
153Cable types and lengths ......................................................................
154Grounding of protective shields .............................................................
155Operation principle ................................................................................
156Start-up including acceptance test .............................................................
156Competence ...................................................................................
156Acceptance test reports ......................................................................
156Acceptance test procedure ..................................................................
158Use ..................................................................................................
159Maintenance .......................................................................................
159Competence ...................................................................................
160Fault tracing .......................................................................................
161Safety data .........................................................................................
161Abbreviations ..................................................................................
10 Table of contents