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HEIDENHAIN
DR. JOHANNES
HEIDENHAJN GmbH
D-8225
Traunreut
.Tel. (08669)
31-O
SERVICE
MANUAL TNC 151/155
Pase
8
Kundendienst
Se&ion
2.2.2
Fault
descriptions
TNC 151/155
VDU Display
(flashing)
TRANSDUCER
X DEFECT
A
TRANSDUCER
Y DEFECT
A
TRANSDUCER
Z DEFECT
A
TRANSDUCER
S DEFECT
A
TRANSDUCER
X DEFECT
B
TRANSDUCER
Y DEFECT
B
TRANSDUCER
Z DEFECT
B
TRANSDUCER
S DEFECT
B
EMERGENCY
STOP DEFECTIVE
WRONG REFERENCE
POINT
Fault
cause
Fault
code:
A = signal
amplitude
fault
B = signal
frequency
fault
.Measuring
system
not
connected
.Cable
damaged
.Glass
scale
dirty
or
damaged
.Scanning
head
damaged
.Measuring
system
supervision
damaged
.Fault
in
the
emergency
stop
circuit
of
the
machine
(for
checking
routine
see Mounting
Instructions
and
Interface
Circuit
Control-Machine
manual
.Defect
in
Control's
internal
Emergency
Stop
supervision
.Traversed-over
reference
point
lies
outside
of
the
reference
point
end
position
(also
see
Mounting
Instruc-
tions
and
Interface
Circuit
Control
Machine
.Defect
in
Control/machine
interface
Possible
fault
location
Measuring
system
Analog
Board
Analog
Board
PI&
I/O
Board
(TNC 151/155
Q)
PIC
Interface
Board
(TNC 151/155
Q)
SE Board
(TNC 151/155
B)
Terminal
Board
(TNC 151/155
B)
Machine
(cams/switches
"reference
end-position"
or
"reference
pulse
inhibit")
PIG
I/O
Board
(TMC 151/155
Q)
PIG
Interface
Board
(TNC 151/155
Q)
SE
Board
(TN'2 151/155
B)
Ter
minal
Board
(TNC
151/155
B)
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