Siemens 6SR41 series - Page 9

Table of contents
Product User Manual
Operating Instructions, Version AE 12/2009, A5E01454341C
7
6.10 Data Logs...................................................................................................................................132
6.10.1 Fault Log ....................................................................................................................................132
6.10.2 Historic Log ................................................................................................................................132
6.10.3 Event Log...................................................................................................................................132
6.11 Faults and Alarms ......................................................................................................................133
6.12 Motor Overload ..........................................................................................................................134
6.13 Input Side Monitoring and Protection.........................................................................................136
6.13.1 One Cycle Protection .................................................................................................................137
6.13.2 Excessive Drive Losses .............................................................................................................138
6.14 Cell Bypass ................................................................................................................................141
6.14.1 Fast Bypass ...............................................................................................................................141
6.14.2 Fast Bypass Process .................................................................................................................141
6.14.3 Neutral Point Shift during Bypass ..............................................................................................144
6.15 Tool Suite...................................................................................................................................149
6.15.1 Drive Host ..................................................................................................................................149
6.15.2 NXG Debug Utility......................................................................................................................150
6.16 Dual Frequency Braking ............................................................................................................151
6.16.1 Introduction to Dual Frequency Braking ....................................................................................151
6.16.2 Operation ...................................................................................................................................151
6.16.3 Limitations..................................................................................................................................153
6.17 Debug Functionality ...................................................................................................................155
7 Application Specific Features................................................................................................................. 157
7.1 Control Mode Summary .............................................................................................................157
7.2 Control Loops.............................................................................................................................158
7.2.1 Current Loop ..............................................................................................................................158
7.2.2 Speed Loop................................................................................................................................158
7.2.3 Flux Loop ...................................................................................................................................158
7.3 System Program ........................................................................................................................159
7.4 Speed Droop..............................................................................................................................160
7.5 Long Cable Applications ............................................................................................................161
7.6 Output Filters............................................................................................................
..................162
7.7 Synchronous Transfer................................................................................................................163
7.7.1 Introduction ................................................................................................................................163
7.7.2 VFD Synchronous Transfer Implementation..............................................................................163
7.7.3 Input/Output Signals for Sync Transfer......................................................................................165
7.7.4 Up Transfer Implementation ......................................................................................................165
7.7.5 Down Transfer Implementation..................................................................................................167
7.8 Parallel Control ..........................................................................................................................169
7.9 Communication Interfaces .........................................................................................................170
7.9.1 Available Networks ....................................................................................................................170
7.9.2 Multiple Networks.......................................................................................................................170
7.10 Process Availability - The Perfect Harmony Advantage............................................................171
7.10.1 What is ProToPSTM? ................................................................................................................171
7.10.2 How does ProToPSTM Work?...................................................................................................171
7.10.3 ProToPSTM Implementation......................................................................................................172
7.10.4 The ProToPSTM Advantage......................................................................................................172