Lenze 8400 BaseLine D - Manual (Page 158)

8 Diagnostics & error management
8.7 Error messages of the operating system
158
Lenze · 8400 BaseLine D · Reference manual · DMS 5.5 EN · 01/2014 · TD05
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
OC9: Ixt overload - shutdown limit [xx.0119.00052]
OU: DC bus overvoltage [xx.0123.00014]
LU: DC bus undervoltage [xx.0123.00015]
OC1: Power section - short circuit [xx.0123.00016]
Response (Lenze setting printed in bold)
 None  Fault  Trouble  WarningLocked
Cause Remedy
The Ixt overload check has tripped.
• Operating threshold = 110 % Ixt (fixed)
Possible causes:
• Wrong dimensioning of the device with regard to its
motor load.
• Load cycles are not complied with.
• Check and, if required, correct dimensioning of the
device and the motor load with regard to technical
data.
• Reduce motor load cycles (observe load cycles accor-
ding to documentation).
Response (Lenze setting printed in bold)
 None  Fault  Trouble  WarningLocked
Cause Remedy
The device has detected an overvoltage in the DC bus. To
protect the device hardware, the inverter control is swit-
ched off.
• Depending on the configuration of the auto-start lock
function, C142 serves to set that, if this error has been
tripped, the controller only starts after the controller
inhibit is switched.
• If this error message remains active longer than the
time set in C601 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: C600/1 ( Adjustable response)
 None  Fault  Trouble  WarningLocked
Cause Remedy
The device has detected a DC bus undervoltage. The in-
verter control is switched off because the drive proper-
ties of the motor control cannot be provided anymore
due to the DC bus undervoltage.
• Depending on the configuration of the auto-start lock
function, C142 serves to set that, if this error has been
tripped, the controller only starts after the controller
inhibit is switched.
• Switch on mains supply or ensure sufficient supply via
DC bus.
• Adjust setting in C142 if required.
Response (Lenze setting printed in bold)
 None  Fault  Trouble  WarningLocked
Cause Remedy
The device has recognised a short circuit of the motor
phases. To protect the device electronics, the inverter
control is switched off.
• Mostly, incorrectly executed motor connections are
the cause.
• If the device is inappropriately dimensioned with re-
gard to the motor load and the current limitation in
the controller (Imax controller) is set incorrectly, this
error message may also occur.
 Motor control: Defining current limits
• Check motor connections and the corresponding plug
connector on the device.
• Only use permissible combinations of device power
and motor power.
• Do not set the dynamics of the current limitation con-
troller too high.