Siemens SINUMERIK 808D ADVANCED Series Commissioning Manual page 467

Fault
F7420: Drive: Current set-
point filter natural frequency
> Shannon frequency
Reaction: NONE
Acknowledgement:
IMMEDIATELY
F7450: Standstill monitoring
has responded
Reaction: OFF1
Acknowledgement:
IMMEDIATELY
F7452: Following error too
high
Reaction: OFF1
Acknowledgement:
IMMEDIATELY
F7801: Motor overcurrent
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
F7802: Infeed or power unit
not ready
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
F7815: Power unit has been
changed
Reaction: NONE
Acknowledgement:
IMMEDIATELY
Commissioning Manual
6FC5397-4EP10-0BA8, 07/2018
Cause
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)
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).
The difference between the position set-
point position actual value (following error
dynamic model) is greater than the toler-
ance.
The drive torque or accelerating capac-
•
ity exceeded.
Position measuring system fault.
•
Position control sense incorrect.
•
Mechanical system locked.
•
Excessively high traversing velocity or
•
excessively high position reference
value (setpoint) differences.
The permissible motor limit current was
exceeded.
Effective current limit set too low.
•
Current controller not correctly set.
•
Motor was braked with an excessively
•
high stall torque correction factor.
Up ramp was set too short or the load
•
is too high.
Short-circuit in the motor cable or
•
ground fault.
Motor current does not match the cur-
•
rent of Motor Module.
After an internal power-on command, the
infeed or drive does not signal ready be-
cause of one of the following reasons:
Monitoring time is too short.
•
DC link voltage is not present.
•
Associated infeed or drive of the sig-
•
naling component is defective.
The code number of the actual power unit
does not match the saved number.
Remedy
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).
•
Check the causes and resolve.
Check the causes and resolve.
Reduce the stall torque correction factor.
•
Increase the up ramp or reduce the load.
•
Check the motor and motor cables for
•
short-circuit and ground fault.
Check the Motor Module and motor combi-
•
nation.
Ensure that there is a DC link voltage.
•
Check the DC link busbar. Enable the in-
feed.
Replace the associated infeed or drive of
•
the signaling component.
Connect the original power unit and power up
the Control Unit again (POWER ON).
467