Ot1: maximum torque reached [xx.0123.00001, Oc7: motor overcurrent [xx.0123.00007, Ou: dc bus overvoltage [xx.0123.00014 – Lenze E84DSxxx User Manual
Page 357: Lu: dc bus undervoltage [xx.0123.00015, Message, Lu: undervoltage in the dc bus, Ot1: maximum torque reached, Error m, Lu: dc bus undervoltage, Xx.0123.00015

Lenze · 8400 protec StateLine · Reference manual · DMS 4.2 EN · 03/2013 · TD05
357
9
Diagnostics & error management
9.10
Error messages of the operating system
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
OT1: Maximum torque reached [xx.0123.00001]
OC7: Motor overcurrent [xx.0123.00007]
OU: DC bus overvoltage [xx.0123.00014]
LU: DC bus undervoltage [xx.0123.00015]
Response (Lenze setting printed in bold)
Setting:
( Adjustable response)
0: No Reaction 1: Fault 2: Trouble 3: TroubleQuickStop 4: WarningLocked 5: Warning 6: Information
Cause
Remedy
The device indicates that the maximally possible torque
at the motor shaft has been reached.
•
displays the current torque.
Reduce motor load.
Response (Lenze setting printed in bold)
0: No Reaction 1: Fault 2: Trouble 3: TroubleQuickStop 4: WarningLocked 5: Warning 6: Information
Cause
Remedy
Maximum current monitoring has tripped.
Check and, if required, correct dimensioning of the load
with regard to the installed device power.
Response (Lenze setting printed in bold)
0: No Reaction 1: Fault 2: Trouble 3: TroubleQuickStop 4: WarningLocked 5: Warning 6: Information
Cause
Remedy
The device has detected an overvoltage in the DC bus. To
protect the device hardware, the inverter control is
switched off.
• Depending on the configuration of the auto-start lock
function, set
so that, when this error is
tripped, the controller only restarts after the
controller inhibit has been switched.
• If this error message remains active longer than the
time set in
, a "Fault" is tripped.
• Reduce load in generator mode.
• Use a brake resistor.
• Use a regenerative power supply unit.
• Establish a DC-bus connection.
Response (Lenze setting printed in bold)
Setting:
( Adjustable response)
0: No Reaction 1: Fault 2: Trouble 3: TroubleQuickStop 4: WarningLocked 5: Warning 6: Information
Cause
Remedy
The device has detected a DC bus undervoltage. The
inverter control is switched off because the drive
properties of the motor control cannot be provided
anymore due to the DC bus undervoltage.
• Depending on the configuration of the auto-start lock
function, set
so that, when this error is
tripped, the controller only restarts after the
controller inhibit has been switched.
• Switch on mains supply or ensure sufficient supply via
DC bus.
• Adjust setting in
if required.