Table of contents
SINAMICS DCM Control Module
10 Operating Instructions, 06.2010, C98130-A7067-A1-02-7619
6.6 Measurement of the armature current ........................................................................................ 92
6.6.1 General information..................................................................................................................... 92
6.6.2 Current measurement with two current transformers on the line side ........................................ 94
6.6.3 Current measurement via terminal block XB-1 to XB-4 with external measuring circuit ............ 96
6.6.3.1 External current transformers in V-circuit with +1 V at rated armature DC current .................... 96
6.6.3.2 External current transformers in V-circuit with +10 V at rated armature DC current .................. 96
6.6.3.3 Differential input for +/-10 V at rated armature DC current......................................................... 97
6.6.3.4 Input for +/-1 V at rated armature DC current............................................................................. 97
6.6.4 External current measurement via X21A or X_I_IST .................................................................. 98
6.6.5 Offset correction via XN1 ............................................................................................................ 99
6.6.6 Information on the differential input, control limits, and grounding ............................................. 99
6.7 Connecting the firing pulse transformers .................................................................................. 100
6.7.1 General information................................................................................................................... 100
6.7.2 Normal use (individual) ............................................................................................................. 100
6.7.3 Parallel connection of firing pulses ........................................................................................... 101
6.7.4 External amplification of firing pulses........................................................................................ 101
6.8 Connecting voltage measurement equipment .......................................................................... 102
6.9 Connecting fuse monitoring equipment .................................................................................... 103
6.10 Parallel connection of power units ............................................................................................ 104
6.11 Field supply ............................................................................................................................... 106
6.12 Line reactors ............................................................................................................................. 108
6.13 Fuses......................................................................................................................................... 109
6.14 Arrangement of printed circuit boards....................................................................................... 110
6.15 Arrangement of customer connections (connector terminals, Faston mounting tabs) ............. 111
6.16 Connector assignment (terminals, Faston mounting tabs, ribbon cables)................................ 117
6.16.1 Connecting the protective conductor ........................................................................................ 118
6.16.2 Exciter circuit............................................................................................................................. 118
6.16.3 Electronics power supply .......................................................................................................... 118
6.16.4 Open-loop and closed-loop control section............................................................................... 119
6.16.5 Voltage measurement equipment ............................................................................................. 129
6.16.6 Fuse monitoring equipment....................................................................................................... 130
6.16.7 Firing pulse transformers .......................................................................................................... 131
6.16.8 Firing pulse................................................................................................................................ 134
6.16.9 Ribbon cables ........................................................................................................................... 137
7 Additional system components .............................................................................................................. 143
7.1 Option Board: Communication Board CBE20........................................................................... 144
7.1.1 Description ................................................................................................................................ 144
7.1.2 Safety instructions..................................................................................................................... 144
7.1.3 Interface description.................................................................................................................. 145
7.1.3.1 Overview ................................................................................................................................... 145
7.1.3.2 X1400 Ethernet interface .......................................................................................................... 145
7.1.3.3 Meanings of the LEDs on the Communication Board Ethernet CBE20.................................... 146
7.1.4 Installation ................................................................................................................................. 148
7.1.5 Technical specifications ............................................................................................................ 148
7.2 Sensor Module Cabinet-Mounted SMC30 ................................................................................ 149
7.2.1 Description ................................................................................................................................ 149
7.2.2 Safety instructions..................................................................................................................... 149
7.2.3 Interface description.................................................................................................................. 151
