HEIDENHAIN TNC 426 PB/M Technical Manual page 1105

Error message
8B40 Power supply unit
<axis> not ready
8B50 Axis module
<axis> not ready
8B60 Axis module
<axis> IGBT error
8BA0 Incorrect line
count <axis>
10 – 12
Cause
n
Inverter is not ready for
operation.
n
No pulse release for the
power module.
n
U too high.
z
n
Power-fail signal is
active.
n
If M control: NE2 input is
active.
n
If P control: drive release
at X50 is inactive.
n
Motor control board
defective.
n
PWM cable defective.
n
Noise pulses.
n
No pulse release for the
power module.
n
U too high.
z
n
5 V power supply too
weak.
n
Inverter is not ready for
operation.
n
Motor control board
defective.
n
PWM cable defective.
n
Noise pulses.
n
Undervoltage,
temperature, or short-
circuit monitor of an
IGBT in the inverter has
responded.
n
Incorrect entry in motor
table.
n
Faulty reference signal.
n
Noise pulses.
n
Encoder cable is
defective.
Corrective action
n
Inform your service agency.
• Check the control and
cabling of the pulse release.
n
Check U .
z
n
Check the emergency stop
circuit.
n
If the power supply is not
regenerative: Is the braking
resistor connected?
n
If the power supply is
regenerative: Is the energy
recovery activated?
n
Check the grounding and
shielding of the cable.
n
Exchange the power module.
n
For P controls: Exchange the
interface card.
n
Exchange the motor drive
control board.
n
Inform your service agency.
• Check the control and
cabling of the pulse release.
• Check U .
z
• If the power supply is not
regenerative: Is the braking
resistor connected?
• If the power supply is
regenerative: Is energy
recovery activated?
• Check the grounding and
shielding of the cable.
• Exchange the power
module.
• For P controls: Exchange the
interface card.
• Exchange the motor drive
control board.
n
Let the inverter cool down.
n
Inform your service agency.
n
Examine the motor for a short
circuit in the windings.
n
Exchange the power module.
n
Inform your service agency.
• Check the entry in the motor
table.
• Check the motor encoder
cable.
• Exchange the motor
encoder cable.
• Exchange the motor.
HEIDENHAIN Technical Manual TNC 426, TNC 430
As of
NC SW
280 476-01
280 476-01
280 476-01
280 476-01