ABB ACH480 - Page 12

13 External EMC filters
213Contents of this chapter .........................................................................................
213Selecting the external EMC filter ...........................................................................
14 Resistor braking
217Contents of this chapter .........................................................................................
217Safety ..........................................................................................................................
217Operation principle ..................................................................................................
217Selecting the brake resistor ...................................................................................
219Reference brake resistors ...............................................................................
222Definitions ..............................................................................................
222Selecting and routing the brake resistor cables ................................................
222Minimizing electromagnetic interference ....................................................
222Maximum cable length .....................................................................................
222Selecting the installation location for the brake resistors ..............................
223Protecting the system in brake circuit fault situations ....................................
223
Protecting the system in cable and brake resistor short-circuit
situations ............................................................................................................
223Protecting the system against thermal overload .......................................
224Mechanical and electrical installation of brake resistor ...................................
224Mechanical installation ....................................................................................
225Electrical installation ........................................................................................
225Measuring the insulation .....................................................................
225Connecting power cables ....................................................................
225Connection the control cables ...........................................................
225Start-up ......................................................................................................................
15 The Safe torque off function
227Contents of this chapter .........................................................................................
227Description ................................................................................................................
228
Compliance with the European Machinery Directive and the UK Supply
of Machinery (Safety) Regulations ................................................................
229Wiring ..........................................................................................................................
229Connection principle ........................................................................................
229Single ACH480 drive, internal power supply ...................................
230Single ACH480 drive, external power supply ..................................
231Wiring examples ................................................................................................
231Single ACH480 drive, internal power supply ...................................
231Single ACH480 drive, external power supply ..................................
232Multiple ACH480 drives, internal power supply .............................
233Multiple ACH480 drives, external power supply .............................
233Activation switch ...............................................................................................
234Cable types and lengths ..................................................................................
12 Table of contents