Overview Of Possible Errors - HEIDENHAIN iTNC 530 Service Manual

5.3

Overview of Possible Errors

This table shows an overview of specific errors on the machine or control, possible causes of
the errors as well as measures for correcting these errors.
The potential measures for correcting the errors are described in more detail in the
corresponding chapters.
Error
The iTNC monitor remains dark after the
machine has been switched on.
The control does not boot completely (error
messages regarding the boot process are
sometimes displayed).
The message "RELAY EXTERNAL DC
VOLTAGE MISSING" does not disappear
although the key "Control voltage ON" is
pressed.
When the machine is switched on, the error
message "EMERGENCY STOP defective"
During switch-on or operation DSP errors
are generated. A mechanical reason or a
defective unit can be ruled out.
The "Power interrupted" message cannot
be confirmed or the login password cannot
be entered in a dual-processor control.
The machine cannot be referenced after
switch-on or the axes cannot be moved
during operation or the spindle cannot be
switched on during operation.
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.
During reference run, the machine moves
to the limit switch.
During reference run, the machine moves
to the mechanical stop (for machines
without limit stop).
An error message is sometimes displayed,
e.g. "8640 I2T value of motor is too high ..."
5 – 26
Note
Where it is possible and makes sense, you may switch the control off and on again to
observe whether the error is generated again afterwards.
Possible Cause of Error
iTNC monitor defective
Power supply to monitor
defective
Power supply of the MC
defective
Defective unit connected to the
control (short circuit, etc.)
Hard disk defective
EMERGENCY STOP chain
interrupted
24 V power supply (connector)
X34 missing
MC defective
Wiring defective, contactors
defective or too slow
MC defective
Data loss on the hard disk in the
range of the SYS partition.
The key gets caught
Interruption between the
NC-stop key and control (the
NC-stop signal is lowactive)
Inverter system is not ready
for operation
The trip dogs for the reversal
of direction during reference run
are defective
The machine was switched off
at the wrong position
Measures for Error Diagnosis and/
or Corrective action
Check the visual display unit;
See "Visual Display Unit" on
page 353
Check power supply of the MC;
See "Power Supply" on page 205
Disconnect defective or suspicious
units or cables, See "Low volta-
ges" on page 24
Exchange MC or HDR or drive
assembly; See "Exchange of
HEIDENHAIN Components" on
page 411
Check output "Control is ready" and
acknowledgement I3; See
"Checking the Enables on the
iTNC" on page 311
Check the related components;
See "Error message EMERGENCY
STOP DEFECTIVE" on page 317
Check the hard disk; See "Hard
Disk Test" on page 233
Activate the NC software again;
See "Activating the NC Software
Used on the Machine" on page 453
See "Keyboard Unit" on page 357
Eliminate the interruption, repair
the key, etc.
See "Machine Operating Panel" on
page 385
See "Checking the Readiness of
the Inverter System" on page 322
See "Referencing" on page 301
Referencing with axis-direction
keys (no automatic reference mark
traverse)!
HEIDENHAIN Service Manual iTNC 530