HEIDENHAIN TNC 426 CB - Page 4

HEIDENHAIN Service Manual TNC 426/430 C/P/M
8 Power Supply..................................................................................................................... 171
8.1 LE 426 CB/430 CA....................................................................................................... 171
8.1.1 Dc-link power supply ......................................................................................... 171
8.2 LE 426 PB / 430 PA..................................................................................................... 173
8.2.1 Dc-link power supply ......................................................................................... 173
8.3 LE 426M / 430M with Simodrive 611D....................................................................... 176
8.3.1 Power supply unit UV 101/B or UV 111 ............................................................. 176
8.4 LE 426M/430M with HEIDENHAIN Inverter ............................................................... 178
8.5 Power Supply to PLC .................................................................................................. 179
8.5.1 Logic unit LE 426.B/430.A ................................................................................. 179
8.5.2 Logic unit LE 426M/430M ................................................................................. 179
8.5.3 PLC expansion board PL 405B/410B ................................................................. 180
8.6 Buffer Battery.............................................................................................................. 181
8.6.1 LE 426 CB/PB and LE 430 CA/PA ...................................................................... 181
8.6.2 LE 426 M and LE 430 M .................................................................................... 182
8.7 Info Menu.................................................................................................................... 183
9 Keyboard Unit TE 401 B/420............................................................................................. 185
9.1 Front View of the Keyboard Unit ................................................................................. 185
9.2 Checking the Keyboard Unit........................................................................................ 186
9.3 Key Matrix of the Keyboard Unit ................................................................................. 188
10 Visual Display Units.........................................................................................................197
10.1 Checking the BC 110 B Visual Display Unit............................................................... 197
10.2 Checking the BC 120 Visual Display Unit.................................................................. 198
10.3 Checking the BC 120F Visual Display Unit ................................................................ 200
11 File Management of the TNC.......................................................................................... 201
11.1 Code Numbers .......................................................................................................... 201
11.2 Where are Which Data in the TNC? .......................................................................... 201
11.3 TNC Partition (TNC:\) ................................................................................................. 204
11.4 PLC Partition (PLC:\).................................................................................................. 206
11.5 Machine Parameter Editor......................................................................................... 208
11.6 Switching the Position Display for Service Purposes................................................ 210
11.7 Command Shell ......................................................................................................... 211
12 Encoder Interface............................................................................................................. 213
12.1 Position Encoders Circuit .......................................................................................... 213
12.2 Speed Encoders Circuit............................................................................................. 216
12.3 Inspecting a Position Encoder................................................................................... 218
13 Checking the Enables on the TNC ................................................................................. 219
13.1 General...................................................................................................................... 219
13.2 "Control-is-Ready" Output (X41 / Pin 34) and Acknowledgement I3 (X41 / Pin 4)..... 219
13.2.1 Checking the output (X41/34) and acknowledgement I3 ................................ 219
13.2.2 Flowcharts of the TNC booting routine ........................................................... 220