Commissioning Manual
6FC5397-4EP10-0BA8, 07/2018
467
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)
• 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-
Check the causes and resolve.
F7452: Following error too
high
Reaction: OFF1
Acknowledgement:
IMMEDIATELY
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.
Check the causes and resolve.
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
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-
• 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.
F7802: Infeed or power unit
not ready
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
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.
•
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.
F7815: Power unit has been
changed
Reaction: NONE
Acknowledgement:
The code number of the actual power unit
does not match the saved number.
Connect the original power unit and power up
the Control Unit again (POWER ON).
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