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CHAPTER
8
DIAGNOSTICS AND TROUBLESHOOTING
This Chapter helps the user to identify and correct possible faults that
can occur during the Soft-Starter SSW-06 operation. This Chapter also
provides instructions about periodical inspections and cleaning
requirements.
8.1 FAULTS AND POSSIBLE
CAUSES
FAULT
E03
Undervoltage at
Power Section during
Operation
Phase Loss or
Voltage Unbalance
in the Power Section
during Operation
Phase Loss in the
Power at the Start
E04
Soft-Starter
Overtemperature
E05
Motor Overload
E06
External Fault
E10
Error in the Copy
Function
E15
Motor not connected
E16
Overvoltage
DESCRIPTION OF THEACTUATION
When the voltage between phases is lower
than the programmed value during the
programmed time. The motor rated voltage is
used as a reference.
When the voltage between phases is
lower or higher during the programmed
time, or when phase loss has been
detected. The other two motor phases are
used as reference.
When there is no voltage synchronization
pulse at the start.
When the thermostats of the heat sink act.
When the times given by the curves of the
programmed thermal classes exceed the
programmed values.
When the digital input programmed to No
External Fault opens.
When the Keypad (HMI) has been loaded
with parameters of different version as the
switch.
When there is no current synchronism
pulse at the initial start.
When the voltage between phases is
higher than the programmed on during the
programmed time. As reference is used the
rated line voltage.
POSSIBLE CAUSES
Power supply is lower than programmed at P400
and P600.
The value programmed at P604 and P605 exceeds
the limits permitted for the application.
Voltage drop during start.
Phase loss in the power supply.
Input transformers have been undersized.
Actuation problems with input contactor.
Fuses at input are open.
Bad contact in the power supply connections.
Wrong motor connection.
Panel with unsuitable cooling. Not permitted Start
cycles.
Not permitted Start cycles.
Thermal classes are programmed lower than
permitted by the motor duty.
Off/On intervals shorter than required for the
motor cooling.
The value of the thermal protection saved when
switching off return when switched on again.
DI4...DI6 wiring is open or not connected to +24V.
X1 connector of the CCS6 control board is
disconnected.
A bid to copy the HMI parameter to the
Soft-Starter with different Software version.
Bad contact of the motor connections.
Thyristors or internal By-pass relays are
short-circuited.
Power supply is higher than programmed at P400,
P602 and P603.
Transformer tap selected with too high voltage.
Capacitive power supply with too low inductive load.
RESET
Power-on
Manual Reset
Auto-reset
DIx
Power-on
Manual Reset
Auto-reset
DIx
Power-on
Manual Reset
Auto-reset
DIx
Power-on
Manual Reset
Auto-reset
DIx
Power-on
Manual Reset
Auto-reset
DIx
Power-on
Manual Reset
DIx
Power-on
Manual Reset
Auto-reset
DIx
When most of the errors are detected, the motor is switched off and the
error is shown on the display as EXY, XY being the error code.
For the SSW-06 Soft-Starter to return to normal operation after an error,
it is necessary to reset it. This can generally be done in the following
ways.
It can be reset as follows:
Disconnecting and reapplying AC power (power-on reset);
Pressing the
of the keypad (HMI) - (manual reset);
Automatic reset through P206 setting (auto-reset);
Via digital input: DI2 (P264 = 2) or DI3 (P265 = 2) or DI4 (P266 = 6)
or DI5 (P267 = 6) or DI6 (P268 = 6).
The table below shows the reset details for each possible cause.
Table 8.1 -
Detailed Fault Description
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