Siemens SIMOTICS S-1FL6, Руководство по эксплуатации

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Diagnostics
11.2 List of faults and alarms
SINAMICS V90, SIMOTICS S-1FL6
396
Operating Instructions, 04/2019, A5E36037884-007
Fault Cause Remedy
F7800 Drive: No power unit
present
Reaction: NONE
Acknowledgement:
IMMEDIATELY
The power unit parameters cannot be read
or no parameters are stored in the power
unit.
• Carry out a POWER ON (power off/on) for
all components.
•
Change the module.
F7801: Motor overcurrent
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-
rent of Motor Module.
•
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 com-
bination.
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 signal-
ing 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:
IMMEDIATELY
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).
F7900: Motor blocked/speed
controller at its limit
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
The servo motor has been operating at the
torque limit longer than the delay time
(p2177) and below the speed threshold
(p2175).
This signal can also be initiated if the
speed actual value is oscillating and the
speed controller output repeatedly goes to
its limit.
•
Check whether the servo motor can rotate
freely or not.
• Check the torque limit.
•
Check the inversion of the actual value.
• Check the motor encoder connection.
•
Check the encoder pulse number.