HEIDENHAIN TNC151B - Fault descriptions TNC 151;155

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)