Specifications

Softstart UK Troubleshooting
Display
Possible cause/Suggested solution
Motor overload
Motor 2 overload
The motor has reached its maximum thermal capacity. Overload can be caused
by:
• The soft starter protection settings not matching the motor thermal capacity
• Excessive starts per hour
• Excessive throughput
• Damage to the motor windings
Resolve the cause of the overload and allow the motor to cool.
Related parameters: 1A, 1B, 1C, 1D, 2A, 2B, 3A, 3B, 16A
Motor Connection Tx
Where 'X' is 1, 2 or 3.
The motor is not connected correctly to the soft starter for in-line or inside delta
use.
• Check individual motor connections to the soft starter for power circuit
continuity.
• Check connections at the motor terminal box.
This trip is not adjustable.
Related parameters: None
Motor thermistor
The motor thermistor input has been enabled and:
• The resistance at the thermistor input has exceeded 3.6 kΩ for more than
one second.
• The motor winding has overheated. Identify the cause of the overheating
and allow the motor to cool before restarting.
• The motor thermistor input has been opened.
NOTE
If a valid motor thermistor is no longer used, a 1.2 kΩ
resistor must be
fitted across terminals 64, 65.
Related parameters: 16G
Network communication
(between module and
network)
The network master has sent a trip command to the starter, or there may be a
network communication problem.
Check the network for causes of communication inactivity.
Related parameters: 16L
No Flow
This is a name selected for a programmable input. See Input trip.
Parameter out of Range
• A parameter value is outside the valid range.
The starter will load the default value for all affected parameters. Press RESET
to go to the first invalid parameter and adjust the setting.
Related parameters: None
Phase sequence
The phase sequence on the soft starter's input terminals (L1, L2, L3) is not valid.
Check the phase sequence on L1, L2, L3 and ensure the setting in parameter 4B
is suitable for the installation.
Related parameters: 4B
PLC
This is a name selected for a programmable input. See Input trip.
Power loss / Power
circuit
The starter is not receiving mains supply on one or more phases when a Start
Command is given.
Check that the main contactor closes when a start command is given, and
remains closed until the end of a soft stop. Check the fuses. If testing the soft
starter with a small motor, it must draw at least 2% of its minimum FLC setting on
each phase.
Related parameters: None
Pump Fault
This is a name selected for a programmable input. See Input trip.
Starter communication
(between module and
soft starter)
• There is a problem with the connection between the soft starter and the
optional communications module. Remove and reinstall the module. If
the problem persists, contact your local distributor.
• There is an internal communications error within the soft starter. Contact
your local distributor.
Related parameters: 16I
Starter Disable
This is a name selected for a programmable input. See Input trip.
Thermistor circuit
Check that a PT100 (RTD) is not connected to 64, 65.
The thermistor input has been enabled and:
• The resistance at the input has fallen below 20 Ω (the cold resistance of
most thermistors will be over this value) or
• A short circuit has occurred. Check and resolve this condition.
Related parameters: None
710-15797-00A – LV-DS User Manual 59/64