确认
YES
-17-
-18-
10. Protection operation
10-1 The list for protection operation
When the soft starter occurs abnormity, the protection function runs, it trips immediately,
LED displays alarming name and concerned content, please refer to table 10-1-1.
Table 10-1-1
Panel display
Alarming name
Operation content and treatment
The fault has
been removed
External instantaneo-
us-stop
terminal opens circuit
Soft starter is over heat
Over long starting
Input open-phase
Three-phase unbalance
Start over-current
Run over-load protection
Too low supply voltage
Too high supply voltage
The set parameter is error
Load short-circuit
Automatic restart,
the connection is
error
The connection of
external stopping
terminal is error
The faults like over-voltage, under-voltage, or overheat, instantaneous
stop terminal opening circuit has been removed, then, turn on the lamp,
press YES key to start the motor.
Check if 07 and 10 terminals are connected, and the NC contact are
connected with other protective equipment or not.
The starting is too frequently, or the power of motor isn't fitted with
that of soft starter.
The starting parameter is set improperly, or the load is too heavy, the
power capacity is not enough.
Check the power for 3-phase, make sure that by-pass contactor isn't
clamped in the closing position, the controllable silicon isn't short
circuit, KG wire is connected well.
Check if input three-phase power and load motor are normal or not.
Check if the load is too heavy or not, or the power of motor isn't fitted
with that of soft starter.
Check if the load is too heavy or not, or the P7 parameter is set wrong.
Check input supply voltage, or P9 parameter is set wrong.
Check input supply voltage, or PA parameter is set wrong.
Amend the setting or press key to start and recover the factory value.
Check the load or motor, and the controllable silicon is short circuit
or load is too large.
Check the external control starting and stopping terminal is connected
with 2-wire controlling mode.
When the external control mode is permitted, the external control
stopping terminal is in the open-circuit state, so it can't start the
motor.
Output open-phase
Examine output circuit and connecting wire of motor, make sure that
by-pass contactor isn't clamped in the closing position, the controllable
silicon isn't short circuit, KG wire is connected well.
Some faults is related, for example, report that soft starter is over heat, starting
over current or load short-circuit, therefore, when check the fault, please consider compr-
ehensively, to judge the faults accurately.
Notice:
When soft starter starts motor successfully, the indication lamp for running in the middle
of panel lightens, it says that the it runs at the bypass, if the bypass contactor can't absorb,
it will cause the motor stops running, thus, you shall check the bypass contactor and con-
nection.
11. Fault diagnosis
11-1 Problem and countermeasure
Abnormity
Content checked
Countermeasure
The motor
can't run
The
keyboard
can't start
External
control
can't start
Although
the motor
rotates, the
speed is not
changed.
The starting
time is too
long.
The starting
time is short
It stops
suddenly
during
running.
The wiring
Weather the power wire
is connected to input the
terminal or not.
(1L1, 3L2, 5L3)
Weather bypass contactor
works or not, and 01, 02
terminal has no signal or not.
Weather the keyboard is
abnormal to display or not.
Weather the motor is locked
or not, (Weather the load is
too heavy or not).
Weather the keyboard has
displayed or not.
Weather 07, 10 terminals
open circuit or not, PD
setting is correct or not.
Weather PD is set at ext-
ernal controlling or not.
Weather the load is too
heavy or not.
The load is too heavy, the
code hasn't been set, wea-
ther the spec of motor is
correct or not.
The load is light
The starting time is too
short
Check the external input
terminal
Please give the correct wiring
Switch on power
Cut off the power, then switch on
Check the connection situation of bypass contactor.
Check the connection situation of coil of bypass
contactor.
Please read P17 Protection operation list“ ”
Clear away the locking of motor (Reduce the load)
No: Weather the power opens phase or not, check
the inlet power.
Yes: 10 and 07, 08 open circuit, check external con-
nection of terminal, please set the PD code correctly.
Terminal 10 and 07, 08 opens circuit, check the ext-
ernal connection of terminal, please set the FD code
correctly, check if it is in the external control poison
or not
Please reduce the load
Add the initial voltage or starting current
Please reduce the load
Please set P0 (Initial voltage), P6 (Starting current),
P1(Starting time)
Please check the specification and nameplate
When the load is light, the starting time is often less
than setting value, the starting is normal, set the sta-
ring time of P1( the current mode is unavailable).
Check connection of 07, 10 terminals fails or not.
If the external protector is equipped with, please
check NC contact operates or not
Check the connection of external stop button fails
or not.
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