COMMISSIONING
Before commissioning the soft starter, the user must read carefully this manual and pay particular
attention to the connection and start sections.
Verify all of the parameters and make the necessary settings before starting the equipment.
Depending on load and applications, the parameter values can be changed.
Voltage and current levels applied in terminals as external signs should be in accordance with the
manual data. Otherwise, the soft starter could be damaged.
GROUND CONNECTIONS
Electric shock prevention:
The soft starter locker chassis must be properly earth ground connected to prevent a possible electric
shock even when a leakage current flows through the locker. Disconnect all of the voltage supplies
before proceeding with maintenance operations within the soft starter or motor. Due to the existence
of capacitors in the power section, the equipment will keep dangerous voltage even when the input
voltage is disconnected. Use a cable to earth-ground it and discharge the existing voltage.
Only connect the earth grounding to the soft starter earth plate. Do not use the case or the chassis
screw for grounding.
The earth protection cable must be connected first and disconnected last.
The motor earth grounding will be connected to the soft starters’ one and not to the installations one.
The installations earth grounding will be connected to the soft starters’ one.
Equipment input cables are medium voltage cables. As shown in the figure, they are coaxial cables,
each one including earth. To carry out with a correct connection it is necessary to join every phase’s
earth and connect it to the soft starters’ earth plate.
The output cables to the motor have the same characteristics. Their earths should also be joined and
connected to the soft starters earth plate IN THE SAME TERMINAL than the input cables.
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