Siemens SINUMERIK 808D Commissioning Manual

Commissioning Manual
490 01/2017
Fault
Cause
Remedy
F7412: Commutation angle
incorrect (motor model)
Reaction: ENCODER
Acknowledgement:
IMMEDIATELY
An incorrect commutation angle was de-
tected that can result in a positive coupling
in the speed controller.
Possible causes:
• The motor encoder is incorrectly ad-
justed with respect to the magnet posi-
tion.
• The motor encoder is damaged.
• Data to calculate the motor model has
been incorrectly set.
• Pole position identification might have
calculated an incorrect value when ac-
tivated.
• The motor encoder speed signal is
faulted.
• The control loop is instable due to
incorrect parameterization.
• If the encoder mounting was changed, re-
adjust the encoder.
• Replace the defective motor encoder.
• Correctly set the motor stator resistance,
cable resistance and motor-stator leakage
inductance.
Calculate the cable resistance from the
cross-section and length, check the induct-
ance and stator resistance using the motor
data sheet, measure the stator resistance,
e.g. using a multimeter - and if required,
again identify the values using the station-
ary motor data identification.
• With pole position identification activated,
check the procedure for pole position iden-
tification and force a new pole position
identification procedure by means of de-
selection followed by selection.
F7414: Encoder serial num-
ber changed
Reaction: ENCODER
Acknowledgement:
IMMEDIATELY
• The encoder was replaced.
• A third-party, build-in or linear motor
was re-commissioned.
• The motor with integrated and adjusted
encoder was replaced.
• The firmware was updated to a version
that checks the encoder serial number.
For the first two causes:
Carry out an automatic adjustment using the
pole position identification routine.
Acknowledge the fault. Initiate the pole position
identification routine. Then check that the pole
position identification routine is correctly exe-
cuted.
SERVO:
If a pole position identification technique is
selected, and if p0301 does not contain a mo-
tor type with an encoder adjusted in the facto-
ry, then p1990 is automatically activated.
Mechanically adjust the encoder. Accept the
new serial number.
For the last two causes:
Accept the new serial number with p0440 = 1.
F7420: Drive: Current set-
point filter natural frequency
> Shannon frequency
Reaction: NONE
Acknowledgement:
IMMEDIATELY
One of the filter natural frequencies is
greater than the Shannon frequency
(2KHz).
Filter 1 (p1658, p1660)
Filter 2 (p1663, p1665)
Filter 3 (p1668, p1670)
Filter 4 (p1673, p1675)
• Reduce the numerator or denominator
natural frequency of the current setpoint fil-
ter involved at the control system side.
• Switch out the filter involved (p1656).
F7450: Standstill monitoring
has responded
Reaction: OFF1
Acknowledgement:
IMMEDIATELY
After the standstill monitoring time expired,
the drive left the standstill window.
• Position loop gain too low.
• Position loop gain too high (instabil-
ity/oscillation).
• Mechanical overload.
• Connecting cable, motor/drive convert-
er incorrect (phase missing, inter-
change).
Check the causes and resolve.

Siemens SINUMERIK 808D Specifications

General

Brand	Siemens
Model	SINUMERIK 808D
Category	Control Unit
Language	English