HEIDENHAIN iTNC 530 Service Manual page 36

Error message Possible cause of error
Additional information and descriptions in
the manual
8B60 Overcurrent Undervoltage, temperature, or short-circuit
monitor of an IGBT in the inverter has
cutoff %.2s
responded.
8BA0 Incorrect Invalid entry for the line count STR in the
motor table
reference signal or
line count %.2s
Faulty reference signal
Noise pulses
Motor encoder cable defective (break or
short circuit)
8BB0 Motor Measured motor temperature too low
temp. too low
Temperature sensor wired incorrectly (short
%.2s
circuit)
Temperature sensor defective
Incorrect temperature sensor (KTY84
required)
Hardware error on encoder input PCB
8BC0 Motor Incorrect motor or power module selected
current %.2s too
Incorrect current controller parameters
high
Incorrect parameters in the motor table
Power module defective
Motor cable defective (short circuit).
Motor defective (short circuit, ground fault)
Motor control board defective
4 – 36
Measures for error diagnosis and/or
corrective action
Additional information and descriptions in
the manual
Let the inverter cool down.
Check the motor connection for a short
circuit.
Examine the motor for short circuit in the
windings.
Exchange the power module.
See "Sequence for Finding Errors in the
Control Loop" on page 6 – 62.
See Service Manual Inverter Systems and
Motors.
Check the entry in the motor table.
Check the signals from the speed or
rotational speed encoder (PWM8).
Check encoder cable for interruption or
short circuit under mechanical load
(bending, stretching, etc.).
Check the shielding and shield connection in
the encoder cable.
Exchange encoder cable.
Exchange the motor.
See "Speed Encoders" on page 18 – 293.
See Service Manual Inverter Systems and
Motors.
Check the wiring.
Check temperature sensor.
Deselect monitoring of excessively low
temperature with MP2220 bit 5.
Exchange encoder input PCB.
See "Speed Encoders" on page 18 – 293.
See Service Manual Inverter Systems and
Motors.
Correct motor and power module selected?
Check the current control adjustment.
Check the motor and motor cable for a short
circuit.
Exchange the power module or the drive
control board.
See "Sequence for Finding Errors in the
Control Loop" on page 6 – 62.
See Service Manual Inverter Systems and
Motors.
HEIDENHAIN Service Manual iTNC 530