Fault Diagnosis and Countermeasures MD280/MD280N User Manual
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Chapter 8 Fault Diagnosis and
Countermeasures
8.1 Fault Alarm and Countermeasures
MD280 inverter has a number of warning information and protection
function. In case of abnormal fault, the protection function will be invoked,
the inverter will stop output, and the faulty relay contact of the inverter will
start, and the fault code will be displayed on the display panel of the
inverter. Before consulting the service department, the user can perform
self-check according to the prompts of this chapter, analyze the fault cause
and find out t solution. If the fault is caused by the reasons as described in
the dotted frame, please consult the agents of inverter or our company
directly.
In the warning information, Err08 refers to the buffer overload fault
resistance, the frequent bus voltage jumps below the under-voltage-point
which is caused by the instability input voltage, and fErr08 fault is easily
caused.When the fault occurs, please disconnect the power supply to wait
at least 5 minutes to ensure that input voltage normal after power-on.
Err26 refers to running time arrival fault, please refers to the description of
F5-13 (that is the running time arrival action selection).
Err31 refers to software over-current fault, please refers to the description
of F5-25 (that is the software over-current point).
Err40 refers to the fast current-limit and overtime fault, please refer to
description of F5-20 (that is the fast current-limit function selection)
Err41 refers to the swiching motor fault, please refers to the description of
group FC (The second motor parameter).
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