Quick Start
Commissioning
Digistart IS User Guide 57
Issue: 4 www.controltechniques.com
Off, Main Contactor, Run, Trip, Warning,
Low Current Flag, High Current Flag, Motor
Temp Flag, Input A Trip, Input B Trip, Motor
Overload, Current Imbalance, Underpower,
Overpower, Frequency, Ground Fault,
Heatsink Overtemp, Phase Loss, Motor
Thermistor, Changeover Contactor
00:00 to 05:00 (minutes:seconds)
See Pr 4A to 4C for details of parameter options.
Off, Main Contactor, Run, Trip,
Warning, Low Current Flag, High
Current Flag, Motor Temp Flag, Input A
Trip, Input B Trip, Motor Overload, Current
Imbalance, Underpower, Overpower,
Frequency, Ground Fault, Heatsink
Overtemp, Phase Loss, Motor Thermistor,
Changeover Contactor
See Pr 4A for details of parameter options.
Outputs D, E and F are only available if the input/output expansion card is installed.
8.8.6 Group 5 - Protection settings
These parameters determine when the soft starter's protection mechanisms will activate. The activation point for each protection
mechanism can be set to suit the installation.
The soft starter responds to protection events by tripping, warning, or writing the event to the event log. The response is determined
by the Protection Action settings (parameter group 16). The default response is a trip.
The protection settings are vital for safe operation of the soft starter and motor. Defeating the protection may
compromise the installation and should only be done in the case of emergency.
00:00 to 04:00 (minutes:seconds)
Excess start time is the maximum time the Digistart IS will attempt to start the motor. If the motor does not transition to Run mode
within the programmed limit, the starter will trip. Set for a period slightly longer than required for a normal healthy start. A setting of 0
disables excess start time protection.
Pr 5A sets the time for the primary motor and Pr 5B sets the time for the secondary motor.
Sets the trip point for current imbalance protection.
The Digistart IS can be configured to trip if the currents on the three phases vary from each other by more than a specified amount.
The imbalance is calculated as the difference between the highest and lowest currents on all three phases, as a percentage of the
highest current.
Current imbalance detection is desensitised by 50% during starting and soft stopping.
Any Sequence, Positive Only, Negative Only
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.
Sets the trip point for underpower protection. Set as required.
Sets the trip point for overpower protection. Set as required.
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