Siemens SINUMERIK 808D ADVANCED Commissioning Manual page 498

A30031: Hardware current
limiting in phase U
A31117: Inversion error
signals A/B/R
Reaction: ENCODER
Acknowledgement: PULSE
INHIBIT
A31411: Encoder 1: Abso-
lute encoder signals internal
alarms
A31412: Encoder 1: Error bit
set in the serial protocol
A52900: Failure during data
copying
498
Hardware current limit for phase U re-
sponded. The pulsing in this phase is
inhibited for one pulse period.
Closed-loop control is incorrectly pa-
•
rameterized.
Fault in the motor or in the power ca-
•
bles.
The power cables exceed the maxi-
•
mum permissible length.
Motor load too high.
•
Power unit defective.
•
Note:
Alarm A30031 is always output if, for a
Power Module, the hardware current limit-
ing of phase U, V or W responds.
For a square-wave encoder (bipolar, dou-
ble ended) signals A*, B* and R* are not
inverted with respect to signals A, B and
R.
The absolute encoder fault word includes
alarm bits that have been set.
The encoder sends a set error bit via the
serial protocol.
Copying is halted.
•
The SD card was plugged out.
•
The drive is not in the stop state.
•
Check the motor data. As an alternative, run a
motor data identification.
Check the motor circuit configuration (star-
•
delta).
Check the motor load.
•
Check the power cable connections.
•
Check the power cables for short-circuit or
•
ground fault.
Check the length of the power cables.
•
Check the encoder/cable.
•
Does the encoder supply signals and the
•
associated inverted signals?
Check the encoder cable connection, and
•
make sure the encoder cables are routed in
compliance with EMC.
Check the motor temperature.
•
Replace the encoder/motor.
•
Carry out a POWER ON (power off/on) for
•
all components.
Check that the encoder cables are routed
•
in compliance with EMC.
Check the plug connections.
•
Replace the encoder.
•
Re-plug in the SD card.
•
Make sure the drive is in the stop state.
•
Commissioning Manual
01/2017