HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 61)

01.98
TNC 407/TNC 415/TNC 425 5 Measuring systems 3-31
Please check that the mounting block, the sensor unit and the scale housing all have a good
electrical connection with the chassis/frame of the machine. Since the connector for the measuring
system and the mounting block are connected by the outer screen of the connector cable, this test
can be carried out between the measuring system connector and the measuring system housing.
During this test the connector must not be plugged in to the logic unit, as this would cause a
grounding via the logic unit.
LS 107 C
LS 403 C, LS406 C
LS 704 C
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• •
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<1
Ω
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Ω
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Ω