Table of contents
CU240S and CU240E Control Units, FW 3.2
Operating Instructions, 03/2009, A5E02440075B AA
7
5.9 Evaluating the frequency inverter status....................................................................................124
5.9.1 Assigning specific functions to digital outputs............................................................................124
5.9.2 Assigning certain functions to analog outputs ...........................................................................126
5.10 Technological functions .............................................................................................................128
5.10.1 Braking functions of the frequency inverter ...............................................................................128
5.10.1.1 DC and compound braking ........................................................................................................130
5.10.1.2 Dynamic braking ........................................................................................................................133
5.10.1.3 Regenerative braking.................................................................................................................135
5.10.1.4 Parameterizing a motor holding brake.......................................................................................136
5.10.2 Automatic restart and flying restart ............................................................................................139
5.10.2.1 Flying restart: switching on the converter when the motor is running........................................139
5.10.2.2 "Automatic restart" function after power failure..........................................................................141
5.10.3 Technology controller.................................................................................................................145
5.10.4 Positioning down ramp...............................................................................................................146
5.10.5 Logical and arithmetic functions using function blocks..............................................................147
5.10.6 Changing over drive data sets (several motors connected to a frequency inverter) .................148
5.11 Operation in fieldbus systems....................................................................................................151
5.11.1 Communication interfaces .........................................................................................................151
5.11.2 Communication via USS ............................................................................................................151
5.11.2.1 User data range of the USS message frame.............................................................................154
5.11.2.2 Data structure of the USS parameter channel...........................................................................154
5.11.2.3 Timeouts and other errors..........................................................................................................160
5.11.2.4 USS process data channel (PZD)..............................................................................................160
5.11.3 Communication via PROFIBUS and PROFINET.......................................................................161
5.11.3.1 Connect the frequency inverter to PROFIBUS ..........................................................................161
5.11.3.2 Example for configuring the inverter on PROFIBUS..................................................................162
5.11.3.3 Integrating a frequency inverter in PROFINET ..........................................................................172
5.11.3.4 Example for configuring the inverter on PROFINET..................................................................173
5.11.3.5 The PROFIdrive profile ................................
..............................................................................176
5.11.3.6
STEP 7 program examples........................................................................................................188
5.12 Safety functions .........................................................................................................................195
5.12.1 Overview ....................................................................................................................................195
5.12.2 Connecting-up the fail-safe inputs .............................................................................................198
5.12.3 Restoring safety-related parameters to the factory setting........................................................200
5.12.4 Controlling the safety functions via PROFIsafe .........................................................................201
5.12.5 Controlling the safety functions via digital inputs.......................................................................201
5.12.6 Settings for the "STO" function ..................................................................................................204
5.12.7 Settings of the SS1, SLS and SBC safety functions..................................................................206
5.12.8 Acceptance test and report........................................................................................................208
5.12.8.1 Documentation of the acceptance test ......................................................................................209
5.12.8.2 Function check of the acceptance test ......................................................................................210
5.12.8.3 Filling in the acceptance report..................................................................................................213
6 Servicing and maintenance.................................................................................................................... 215
6.1 Behavior of the frequency inverter when replacing components...............................................215
6.2 Replacing the Power Module.....................................................................................................216
6.3 Replacing the Control Unit.........................................................................................................217
6.4 Standard commissioning............................................................................................................218
7 Messages and fault codes ..................................................................................................................... 219
7.1 Status display using LEDs .........................................................................................................220
7.2 Alarm and error messages.........................................................................................................225
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