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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 imbalance
in the power section
during operation
Phase loss in the
power at start
E04
Soft-Starter overtem-
perature
E05 or A05
Motor overload
E06 or A06
External fault or Alarm
E10
Error in the copy
function
DESCRIPTION OF THE ACTUATION
When the voltage between phases is lower
than the programmed value during the pro-
grammed time. The nominal motor voltage is
used as a reference.
When the voltage between phases is lower
or higher than the programmed value 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 start.
When the thermostats of the heatsink 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, P266, P267 or P268.
When the Keypad has been loaded with pa-
rameters of a different version to the switch.
POSSIBLE CAUSES
The line undervoltage value (in percentage of P400)
is higher than the programmed in P600, longer than
the time programmed in P601.
The value of the voltage imbalance between the line
phases (in percentage of P400) is higher than the
programmed in P604, longer than the time program-
med in P605.
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.
Loose contact in the power supply connections.
Wrong motor connection.
Panel with unsuitable cooling.
Start cycles not permitted.
Start cycles not permitted.
Thermal classes are programmed in P640 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 returns when switched on again.
DI4...DI6 wiring is open or not connected to +24V.
X1 connector of the CCS6 control board is discon-
nected.
A bid to copy the keypad parameters to a
Soft-Starter with different Software version.
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
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:
Disconnecting and reapplying AC power (power-on reset);
Pressing the of the keypad - (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 fault trips can be transformed into alarms by means of P700 to
P799. The alarms are showed on the display as Axy, being Axy the
fault code. They are automatically reset.
The table below shows the reset details for each possible cause.
Table 8.1
- Detailed fault description
Summary of Contents for SSW06
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