S1 series standard inverter
-158-
Phase loss or violent
fluctuation occurred to R, S
and T input
Check the input power;
Check installation wiring
Phase loss on
output side
Phase loss occurred to U, V,
W output (or the three
phases of motor is
asymmetrical)
Check the output wiring;
Check the motor and cable
Overheat of rectifier
module
Air duct is blocked or fan is
damaged;
Ambient temperature is too
high;
Long-time overload running
Ventilate the air duct or replace
the fan;
Lower the ambient temperature
Overheat of inverter
module
External fault input terminal
acts
Check external device input
Baud rate is set improperly;
Communication line fault;
Communication address
error;
Communication suffers from
strong interference
Set proper baud rate;
Check the wiring of
communication interfaces;
Set proper communication
address;
Replace or change the wiring to
enhance anti-interference
capacity
Poor contact of the
connector of control board;
Hall component is damaged;
Exception occurred to
amplification circuit
Check the connector and
re-plug;
Replace the hall component;
Replace the main control board
Motor capacity does not
match with the inverter
capacity, this fault may occur
easily if the difference
between them is exceeds
five power classes;
Motor parameter is set
improperly;
The parameters gained from
autotuning deviate sharply
from the standard
parameters;
Change the inverter model, or
adopt V/F mode for control;
Set proper motor type and
nameplate parameters;
Empty the motor load and carry
out autotuning again;
Check motor wiring and
parameter setup;
Check whether upper limit
frequency is larger than 2/3 of
the rated frequency
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