DR. JOHANNES HEIDENHAIN
D-8225 Traunreut
Telefon (08669) 31.0,Telex 56831
SERVICE MANUAL TNC 150
Page 2
Section 1
l.Ose of the Service Ham&al TIY: 150
In order t&determine the fault condition on an NC machine+
a fundamental knowledge of the machine and the drives is
necessary, as well a a knowledge of their interaction with
t&e Control and measuring system. In addition, improper use
of the Control,
such as incorrect NC programing or incorrect
selection of machine parameters can lead to the occurrence
of fault conditions. Further information in this respect can
be found in:
.TNC 150 OPERATING MANUAL
.TNC 150 MOUNTING INSTRUCTIONS AND INTERFACE CIRCUIT CONTROL-
MACHINE
.TNC ~150 PLC-DESCRIPTION
The TNC 150 Service Manual is uSed for the diagngsis, loca-
lisation and remedying of faults on TNC controlled machines.
In chapter 2, Fault Diagnosis, a set of flowcharts enables
the user to pinpoint the source of a fault from its symp-
tams .
An inbuilt supervision system and a BURN-IN Test Program
specifically developed for testing thebContro1 can aid in
the location of faults.
Important guidance for the exchange of entire Controls,
individual boards, or software is given in section 3, Exchange
Information.
Section 4, Additional Information, contains a block dia-
gram of the Control, a wiring diagram for each version of the
Control, and a list of machine parameters with permissible
entry values.
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