8400 HighLine | Parameter setting & configuration
Diagnostics & error management
Error messages of the operating system
480 L Firmware ≤ 05.00 - DMS 4.2 EN - 02/2010
 
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  TroubleQuickstop  Warning  WarningLocked  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, C00142
 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 C00601
, 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: C00600/1 (; Adjustable response)
 None ; Fault : Trouble  TroubleQuickstop  Warning  WarningLocked  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, C00142
 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 C00142
 if required.
Response (Lenze setting printed in bold)
 None : Fault  Trouble  TroubleQuickstop  Warning  WarningLocked  Information
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 
regard 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 
controller too high.
efesotomasyon.com - Lenze