ABB ACS180 - Page 10

11 Resistor braking
135Contents of this chapter .........................................................................................
135Safety ..........................................................................................................................
135Operation principle ..................................................................................................
135Selecting the brake resistor ...................................................................................
137Reference brake resistors ...............................................................................
137Definitions ..............................................................................................
138Selecting and routing the brake resistor cables ................................................
138Minimizing electromagnetic interference ....................................................
138Maximum cable length .....................................................................................
138Placing the brake resistors .....................................................................................
139Protecting the system in brake circuit fault situations ....................................
139
Protecting the system in cable and brake resistor short-circuit
situations ............................................................................................................
139Protecting the system against thermal overload .......................................
140Mechanical and electrical installation of brake resistor ...................................
140Mechanical installation ....................................................................................
141Electrical installation ........................................................................................
141Measuring the insulation .....................................................................
141Connecting power cables ....................................................................
141Connection the control cables ...........................................................
141Start-up ......................................................................................................................
12 The Safe torque off function
143Contents of this chapter .........................................................................................
143Description ................................................................................................................
144
Compliance with the European Machinery Directive and the UK Supply
of Machinery (Safety) Regulations ................................................................
145Wiring ..........................................................................................................................
145Connection principle ........................................................................................
145Single ACS180 drive, internal power supply ....................................
146Single ACS180 drive, external power supply ...................................
147Wiring examples ................................................................................................
147Single ACS180 drive, internal power supply ....................................
147Single ACS180 drive, external power supply ...................................
148Multiple ACS180 drives, internal power supply ...............................
149Multiple ACS180 drives, external power supply ..............................
149Activation switch ...............................................................................................
150Cable types and lengths ..................................................................................
150Grounding of protective shields ....................................................................
151Operation principle ..................................................................................................
152Start-up including validation test .........................................................................
152Competence .......................................................................................................
152Validation test reports .....................................................................................
10 Table of contents