5 – 52 HEIDENHAIN Service Manual iTNC 530 HSCI
The message RELAY EXTERNAL
DC VOLTAGE MISSING does not
disappear, although the key
CONTROL VOLTAGE ON is
pressed.
EMERGENCY STOP chain
interrupted
24 V power supply from
connector X34 missing
MC defective
Check the output
"Control is ready" and
acknowledgment I3.
See ”Checking the enables
on the iTNC 530 HSCI” on
page 17 – 225.
When the machine is
switched on, the error
message EMERGENCY STOP
defective appears.
Wiring defective,
contactors defective or
too slow
MC defective
Check the related
components.
See ”Error message:
EMERGENCY STOP
defective” on page 17 –
230.
iTNC monitor is "frozen".
The control is inoperable.
The main switch must be
switched off and on again.
After reset of the control
"Power fail Interrupt!" is
entered in the log of new
software versions.
Power failure
Failure of one or several
phases in the supply line
Supply voltage has fallen
below minimum
Interruption in the electrical
cabinet
Inverter (power supply
module) defective
Short circuit of drives (drive
modules, motors)
Check the primary supply
(cables, fuses, terminals,
etc.)
Check the wiring of the
inverter system; see circuit
diagrams of the machine
manufacturer.
Check the function of
inverter system and
motors.
See ”Power supply” on
page 18 – 243.
See "Service Manual for
Inverter Systems and
Motors".
DSP errors are generated
repeatedly on power-on and
during operation.
A mechanical reason or a
defective unit can be ruled
out.
Data loss on the hard disk in
the SYS partition area
Check the hard disk.
Reactivate the NC
software.
See ”Test of the data
medium” on page 13 – 169.
See ”Reloading the
currently used NC
so
ftware”
on page 15 –
215.
Hard disk errors continue to
be generated
Defects on the hard disk
Defective unit connected to
the control (short circuit,
etc.)
Check the hard disk.
Disconnect suspicious
devices.
See ”Test of the data
medium” on page 13 – 169.
See ”Notes and tips for the
field service” on page 6 –
71.
NC functions are no longer
executed. (The control may
have reported that the
corresponding files have
been deleted).
Data loss on the hard disk in
the SYS partition area
Check the hard disk.
Reactivate the NC
software.
See ”Test of the data
medium” on page 13 – 169.
See ”Reloading the
currently used NC
software” on page 15 –
215.
Error messages regarding
encoders or other connected
units are generated although
you find out that these do not
cause the errors.
Defective unit connected to
the control
Probe or handwheel may
have been exposed to
humidity (coolant, etc.) or
have been damaged
--> Supply voltages (5 V,
12 V, 15 V) are impaired.
A variety of error messages
may be generated.
Disconnect defective or
suspicious devices or
cables.
See ”Error localization by
process of exclusion” on
page 6 – 63.
Various error messages are
generated which, however,
are not substantive.
Connection (short circuit) of
shield potential (chassis,
cable shielding) with 0 V
potential of the NC power
supply
Check the cables for
damage. Check the
machine for correct
shielding (ask the machine
manufacturer).
See ”Notes and tips for the
field service” on page 6 –
71.
The machine cannot be
referenced after switch-on, or
during operation neither the
axes can be moved nor the
spindle switched on.
Interruption between
NC Stop key and control
(the NC Stop signal is low-
active)
Eliminate the interruption,
repair the key element, etc.
See ”Machine operating
panel” on page 24 – 393.
The machine is in the mode
Cross over reference points
which is neither possible with
the NC START key nor with
the axis direction keys.
Inverter system is not ready
for operation
Check whether the inverter
system is ready.
See
”
Readiness of the
inverter system” on page
17 – 233.
Error Possible cause of error Measures for error
diagnosis and/or corrective
action
Descriptions in this manual
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