Specifications
Softstart UK Programming Menu
• 4 Protection Levels
4A – Current Imbalance
Range: 10% - 50% Default: 30%
Description: Sets the trip point for current imbalance protection.
4B – Phase Sequence
Options: Any Sequence (default)
Positive Only
Negative Only
Description: Selects which phase sequences the soft starter will allow at a start. During its
pre-start checks, the starter examines the sequence of the phases at its input
terminals and trips if the actual sequence does not match the selected option.
4C – Undercurrent
Range: 0% - 100% Default: 20%
Description: Sets the trip point for undercurrent protection, as a percentage of motor full load
current. Set to a level between the motor's normal working range and the motor's
magnetising (no load) current (typically 25% to 35% of full load current). A setting of
0% disables undercurrent protection.
4D – Instantaneous Overcurrent
Range: 80% - 600% FLC Default: 400%
Description: Sets the trip point for instantaneous overcurrent protection, as a percentage of motor
full load current.
4E – Input A Trip
Options:
Always Active (default)
A trip can occur at any time when the soft starter is
receiving power.
Operating Only
A trip can occur while the soft starter is running,
stopping or starting.
Run Only
A trip can only occur while the soft starter is running.
Description: Selects when an input trip can occur.
4F – Motor Temperature Check
Options: Do Not Check (default)
Check
Description: Selects whether the LV-DS will verify the motor has sufficient thermal capacity for a
successful start. The soft starter compares the motor's calculated temperature with
the temperature rise from the last motor start and only operates if the motor is cool
enough to start successfully.
4G – Frequency Check
Options: Do Not Check
Start Only
Start/Run (default)
Run Only
Description: Determines when and if the starter will monitor for a frequency trip.
4H – Frequency Variation
Options: ± 2 Hz
± 5 Hz (default)
± 10 Hz
± 15 Hz
Description: Selects the soft starter's tolerance for frequency variation.
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