Sequence For Finding Errors In The Control Loop - HEIDENHAIN iTNC 530 Service Manual

6.4

Sequence for Finding Errors in the Control Loop

In the event of error messages regarding movement, acceleration or standstill, for example:
or in case of errors, for example:
... you can check the machine components in a defined order to find the fault. --> See flowchart
in this chapter.
The integrated oscilloscope for iTNC 530 is a handy tool for analyzing errors in the control loop.
Integrated
oscilloscope
Activation and operation --> See "Integrated Oscilloscope" on page 10 – 99.
See also:
6 – 62
Positioning error
Excessive servo lag
Nominal speed value too high
Movement monitoring
Standstill monitoring
Poor workpiece quality
Unusual noise during axis movements
Unusual vibrations
Note
If you need information on lubrication, mechanics, hydraulics, pneumatics, brakes, coupling
system, please contact your machine manufacturer!
Error message
Positioning error
Excessive servo lag
Nominal speed value too
high
Movement monitoring
Standstill monitoring
Note
The torque-determining current I nominal in particular is an important characteristic for the
mechanics of the axis concerned (stiffness, blunt tool, lubrication, utilization, etc.)
Other signals, such as I2-t (mot.), I2-t (Lt.) und Utilization are calculated from the
current.
"Finding Position Differences of Direct and Indirect Encoder" on page 6 – 68
"Error Localization by Switching from Direct to Indirect Position Measurement" on page 6 –
70
Recommended Additional signal
signals
s diff I (nominal), I2-t (mot.), I2-t
(p.m.), Utilization
s diff I (nominal), I2-t (mot.) I2-t
(p.m.), Utilization
v nominal, v (nom I (nominal), I2-t (mot.) I2-t
rpm), v actual, (p.m.), Utilization
v (act rpm)
v nominal, v (nom I (nominal), I2-t (mot.) I2-t
rpm), v actual, (p.m.), Utilization
v (act rpm),
Pos. diff.
s diff I (nominal), I2-t (mot.) I2-t
(p.m.), Utilization
HEIDENHAIN Service Manual iTNC 530