Siemens SINAMICS V90 Operating Instructions Manual page 277

Fault
F7090: Drive: Upper torque
limit less than the lower
torque limit
Message class: Error in the
parameteriza-
tion/configuration/commission
ing procedure (18)
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
F7093: Drive: Test signal
error
Message class: Error in the
parameteriza-
tion/configuration/commission
ing procedure (18)
Reaction: OFF3
Acknowledgement:
IMMEDIATELY
F7220: Drive: Master control
by PLC missing
Message class: Communica-
tion to the higher-level con-
troller faulted (9)
Reaction: OFF1
Acknowledgement:
IMMEDIATELY
F7403: Lower DC link voltage
threshold reached
Message class: Infeed faulted
(13)
Reaction: OFF1
Acknowledgement:
IMMEDIATELY
F7404: Upper DC link voltage
threshold reached
Message class: DC link over-
voltage (4)
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2017, A5E37208830-003
Cause
The upper torque limit is lower than the
lower torque limit.
The limit rotation of the motor (p29027) is
inappropriate.
The "master control by PLC" signal was
missing in operation.
Input for "master control by PLC" is
•
incorrect.
The higher-level control has withdrawn
•
the "master control by PLC" signal.
Data transfer via the fieldbus (mas-
•
ter/drive) was interrupted.
The DC link voltage monitoring is active
and the lower DC link voltage threshold
was reached in the "Operation" state.
The DC link voltage monitoring is active
and the upper DC link voltage threshold
was reached in the "Operation" state.
12.1 List of faults and alarms
Remedy
The upper torque limit (p29050) must be ≥
lower torque limit (p29051)
Modify the value of parameter p29027.
Check the input for "master control by
•
PLC".
Check the "master control by PLC" signal
•
and, if required, switch in.
Check the data transfer via the fieldbus
•
(master/drive).
Check the line supply voltage.
•
Check the infeed.
•
Reduce the lower DC link threshold.
•
Switch out (disable) the DC link voltage
•
monitoring.
Check the line supply voltage.
•
Check the infeed module or the brake
•
module.
Increase the upper DC link voltage
•
threshold.
Switch out (disable) the DC link voltage
•
monitoring.
Diagnostics
277