HEIDENHAIN iTNC 530 HSCI - Page 28

February 2012 4 – 29
8620 Load is too
high <axis>
 Drive has maximum current and cannot
accelerate.
 Excessive load (torque, power) on the drive.
 Reduce the load on the drive.
 Check the motor table, power module table,
and machine parameters.
 Check whether the motor and power module
are designed for the load.
 See ”Sequence for finding errors in the control
loop” on page 6 – 58.
 See Service Manual Inverter Systems and
Motors.
8640 I2T value of
motor is too high
<axis>
 The load of the motor is too high over the
duration.
 Reduce the load or the duration.
 Check the motor table and machine
parameters.
 Check whether the motor is designed for the
load.
 See Service Manual Inverter Systems and
Motors.
8650 I2T value of
motor is too high
<axis>
 The load of the power module is too high over
the duration.
 Reduce the load or the duration.
 Check the motor table and machine
parameters.
 Check whether the power module is designed
for the load.
 See Service Manual Inverter Systems and
Motors.
8800 Signal LT-
RDY inactive
<axis>
 Inverter switch-off during closed-loop control of
a vertical axis (cause = vertical axis).
 Check the PLC program.
 Check the wiring of the inverter.
 See Service Manual Inverter Systems and
Motors.
8810 Signal LT-
RDY inactive
<axis>
 Inverter switch-off during closed-loop control of
a vertical axis (cause = vertical axis).
 Check the PLC program.
 Check the wiring of the inverter.
 See Service Manual Inverter Systems and
Motors.
8820 Field angle
unknown <axis>
 Field angle of the motor on the reference point
of the speed encoder has not yet been
ascertained.
 Run a field orientation.
 Check the motor table (column SYS).
 See ”Speed encoders” on page 19 – 300.
8830 EnDat: No
field angle <axis>
 Field angle of the motor with unaligned speed
encoder with EnDat interface has not yet been
ascertained.
 The transferred EnDat serial number does not
match the one saved.
 Con
nected
EnDat encoder or encoder cable is
defective.
 Run a field orientation.
 Check the motor table (column SYS).
 See ”Speed encoders” on page 19 – 300.
8860 Input
frequency from
speed encoder
<axis>
 Noise on speed encoder signals  Check the encoder signals.
 Check the shielding.
 See ”Further examination of position and
speed encoders” on page 19 – 314.
Error message Possible cause of error Measures for error diagnosis and/or
corrective action
Additional information and descriptions
in the manual
Additional information and descriptions
in the manual