HEIDENHAIN TNC 407 (243 020) Service Manual - Manual (Page 4)

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31-O
SERVICE MANUAL TNC
Issue:
01.09.1995
Page 1
Table of Contents
Page
1.
3.
4.
4.1
4.2
4.3
5.
5.1
5.2
5.3
5.4
6.
7.
8.
8.1
8.2
8.3
8.4
8.5
8.6
8.7
9.
9.1
9.2
10.
10.1
10.2
11.
11.1
11.2
11.3
12.
12.1
12.2
12.3
How to use this service manual .......................................................................................... 3
Minor messages ............................................................................................................. 4
Causes
of minor error messages ..................................................................................................
5
Major messages and their causes ............................................................................ 6
Logic unit .........................................................................................................
11
Designation of the logic unit LE 407 ............................................................................................
11
Designation of the logic unit LE 41 5.. ..........................................................................................
12
Hardware components of the logic unit.. .................................................................................... 13
Connector designation and pin layout ............................................................................ 14
Connectors on the logic units ......................................................................................................
14
Connectors on the PLC boards .................................................................................................... 21
Connectors on the keyboard units .............................................................................................. 24
Connectors on the visual display units ........................................................................................ 27
Board description.. ................................................................................................................. 29
Grounding diagram.. .............................................................................................................. 30
Power supply.. ......................................................................................................................... 32
External power supply requirements .......................................................................................... 32
Power supply of the visual display units ..................................................................................... 34
Power supply of the NC-Part.. ..................................................................................................... 35
Checking the power supply ......................................................................................................... 36
Measuring points on the boards.. ................................................................................................ 38
Power supply of the PLC-Part ..................................................................................................... 40
Buffer battery .............................................................................................................................. 42
Keyboard unit TE ................................................................................................. 43
Overview ..................................................................................................................................... 43
Checking the keyboard unit.. ....................................................................................................... 44
Visual display unit BC 1 ....................................................................................... 48
Overview .....................................................................................................................................
48
Checking the visual display unit ................................................................................................... 48
Encoders ................................................................................................................................... 49
Error messages ........................................................................................................................... 49
Error causes.. ............................................................................................................................... 49
Checking the encoders ................................................................................................................ 49
Handwheel HR ........................................................................................................ 51
Overview.. ................................................................................................................................... 51
Checking the handwheel HR
......................................................................................... 51
Error messages ........................................................................................................................... 51