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Contents

8250BA0903 i

1 Preface and general information 1-1.................

1.1 About these Operating Instructions ... 1-1.....................

1.1.1 Terminology used 1-1............................

1.1.2 What is new? 1-1...............................

1.2 Scope of delivery 1-2...................................

1.3 825X brake units 1-2...................................

1.3.1 Labelling 1-2..................................

1.3.2 Application as directed 1-3........................

1.3.3 Legal regulations 1-4............................

2 Safety information 2-1............................

2.1 Personnel responsible for safety 2-1.........................

2.2 General safety information 2-2.............................

2.3 Layout of the safety information 2-3.........................

2.4 Residual hazards 2-4...................................

3 Technical data 3-1...............................

3.1 F eatures 3-1.........................................

3.2 General data /operating conditions 3-2.......................

3.3 Rated data 3-3........................................

3.3.1 Brake units 3-3.................................

3.3.2 Assignment table for brake resistors 3-3...............

3.3.3 Overcurrent relay and cable cross-sections 3-4..........

3.4 Dimensions 3-4.......................................

4 Installation 4-1..................................

4.1 Mechanical installation 4-1...............................

4.1.1 Important notes 4-1.............................

4.1.2 Standard assembly with fixing rail 4-2................

4.1.3 DIN-rail assembly 4-3............................

4.2 Electrical installation 4-4.................................

4.2.1 Operator’s safety 4-4.............................

4.2.2 Protection of the brake unit 4-5.....................

4.2.3 Specification of cables used 4-5....................

4.3 Connection 4-6........................................

4.3.1 Power connection 4-6............................

4.3.2 8251 brake module on 820X controller 4-7.............

4.3.3 8252 brake module on 821X controller 4-8.............

4.3.4 8253 brake chopper on 821X controller 4-9............

4.3.5 Connect temperature monitoring 4-10.................

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Lenze 8250 Series User Manual

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