February 2012 5 – 53
During reference run, the
machine hits the limit switch.
The trip dogs for direction
reversal during reference
run are defective.
Check the trip dogs. See ”Reference run” on
page 20 – 323.
During reference run, the
machine hits the mechanical
stop (for machines without
limit switches).
An error message may be
displayed, e.g. 8640 I2T
value of motor is too
high ...
The machine was switched
off at a wrong position.
Reference run with
axis-direction keys
(no automatic reference
mark traverse)
See ”Reference run” on
page 20 – 323.
The machine executes the
reference run properly but
stops at a wrong position.
A wrong reference mark
was evaluated.
When executing a
reference run via the motor
encoder, the trigger signal
is too close to the desired
reference mark.
A scale magnet is shifted or
defective.
The ref. mark selector plate
of a scale is shifted.
The paint covering a
reference mark is damaged
or was removed from the
scale.
Readjust the trip dog
relative to the reference
mark of the motor encoder.
Realign the magnet
(outside or inside the scale
housing) and fix it with
spacers.
Readjust the ref. mark
selector plate inside the
scale housing with special
slider.
Cover the ref. mark not to
be evaluated with paint or
replace the scale.
See ”Readjusting the trip
dog for reference end
position” on page 19 – 311.
STIB ("Control-in-operation =
"*" in status display) remains
in place even though
positioning appears to be
completed.
In the automatic operating
modes the next NC block is
not executed; the NC program
hangs.
Axis did not reach the
positioning window.
Excessive drift of analog
axes
Approach behavior of axis
not optimized
Perform drift adjustment
Re-optimization or new
optimization of the axis by
the machine manufacturer
See ”Interfaces to the
drives” on page 21 – 327.
"Oscillating" axes, sometimes
involving loud noise.
Poor shielding or grounding
Connectors on grounding
terminal X131 of infeed/
regenerative module
(Simodrive 611D) not
prope
rl
y wired
Grounding terminal X131 on
infeed/regenerative module
(Simodrive 611D) or
grounding connection
damaged
Check the grounding of
your machine; consult your
machine manufacturer.
Ensure that all grounding
clamps are secure.
Check the shielding,
e.g. the covers.
See ”Notes and tips for the
field service” on page 6 –
71.
See ”Exchanging
HEIDENHAIN interface
boards in the SIMODRIVE
system” on page 29 – 553.
The following error is too high
at axis standstill.
Electrical offset of analog
axes
Carry out offset
adjustment.
See ”Adjusting the
electrical offset (drift
adjustment)” on page 21 –
355.
Jerking movement of the
analog axis
Carbon brushes to supply
the motor with energy or to
pick off the speedometer
are abraded on one side or
used up.
Exchange the carbon
brushes.
The axes cannot be traversed
and the red SH2 LEDs of all
HEIDENHAIN drive modules
light up (or the red LEDs SH2
or RESET of the HEIDENHAIN
interface cards for the
SIMODRIVE system).
Drive enabling is missing Check the enablings. See ”Checking the enables
on the iTNC 530 HSCI” on
page 17 – 225.
Error Possible cause of error Measures for error
diagnosis and/or corrective
action
Descriptions in this manual
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