Lenze 8400 StateLine - Manual (Page 456)

9 Diagnostics & error management
9.9 Error messages of the operating system
456
Lenze · 8400 StateLine · Reference manual · DMS 12.0 EN · 06/2014 · TD05/TD14
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LU: DC bus undervoltage [xx.0123.00015]
oC1: Power section - short circuit [xx.0123.00016]
oC2: Power section - earth fault [xx.0123.00017]
Response (Lenze setting printed in bold) Setting: C00600/1 ( 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 C00142 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 C00142 if required.
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 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.
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 recognised an earth fault at one of the
motor phases. To protect the device electronics, the
inverter control is switched off.
• Mostly, incorrectly executed motor connections are
the cause.
• If motor filter, motor cable length, and cable type
(shielding capacity) are dimensioned incorrectly, this
error message may occur due to leakage currents to
PE.
• If motor filters with additional terminals for +UG and
–UG and devices greater or equal 3 kW are used, the
earth fault detection may be triggered due to leakage
currents to +UG and –UG.
• A cause can also be the use of shielded motor cables
longer than 50 m.
• Check motor connections and the corresponding plug
connector on the device.
• Use motor filters, cable lengths, and cable types
recommended by Lenze.
• If motor filters with additional terminals for +UG and
–UG and devices greater or equal 3 kW are used:
• up to version V05.00.00: Set resp. to earth fault
( C00602 ) to "0: No Reaction".
• From version V05.01.00 onwards: Deactivate earth-
fault detection during operation by setting the
filter time ( C01770 ) to 250 ms.
• If motor cables longer than 50 m are used:
• From version V05.01.00 onwards: Increase filter
time for earth-fault detection during operation
( C01770 ).