Considering a soft starter, how to size the line contactor?

The line contactor must be sized in AC-3 category with a current greater or equal to the motor full load current (FLC).   Example Motor rated current = 28 A Soft starter rated current ≥ 28A AC-3 (e.g. ADXL0030600 à 30A) Line contactor ≥ 28A AC-3 (e.g. BF3200A230 à 32A AC-3)         [...]

By |2021-06-17T15:08:38+02:00June 17th, 2021|, , |Comments Off on Considering a soft starter, how to size the line contactor?

Considering a soft starter, how to size the external bypass contactor?

Bypass contactor should be AC-1 rated for the motor full load current (FLC) because it does not carry the starting current.   ______________________________________________________________________________________________ Other information on this topic Visit the website page dedicated to contactors. Check out our video on BF series LOVATO Electric – Contactors BF series Visit the website page dedicated to ADXL… series soft [...]

By |2021-06-17T14:51:50+02:00June 17th, 2021|, , |Comments Off on Considering a soft starter, how to size the external bypass contactor?

How to command the line contactor when using a soft starter?

The command of the line contactor is managed automatically by the soft starter with a relay output programmed with the function LINE.CONT (sometimes also called Run according to soft starter models): LINE CONT. = the output closes at the start command and it remains closed all the time when the soft starter is feeding voltage [...]

By |2021-06-17T14:51:33+02:00June 16th, 2021|, , |Comments Off on How to command the line contactor when using a soft starter?

Considering a soft starter, can I replace its line contactor with a breaker?

Yes, it can be used circuit breaker with undervoltage trip. In case of fault the soft starter will interrupt the signal on the breaker undervoltage trip through a relay output, with consequence interruption of the current flow to the motor. But contactor it is preferable due to its high mechanical durability compared with circuit breaker which [...]

By |2021-06-17T14:49:43+02:00June 16th, 2021|, , |Comments Off on Considering a soft starter, can I replace its line contactor with a breaker?

What is the purpose of the line contactor for a soft starter? Is it mandatory?

It is a contactor installed upstream the soft starter to warrant a galvanic separation between the power supply line and the motor when the motor is not in use (stop). The presence of the line contactor is extremely important for the following purposes: 1.Safety of the personnel: it removes the voltage on the motor side [...]

By |2021-06-17T14:49:31+02:00June 16th, 2021|, , |Comments Off on What is the purpose of the line contactor for a soft starter? Is it mandatory?

With the soft starters of the ADXL series … is it also possible to reverse the motor?

Yes, it is possible to do this by making a circuit outside the soft starter as indicated in the instruction manual __________________________________________________________ Other information on this topic Visit the website page dedicated to ADXL... series soft starters. Check out our video LOVATO Electric - Soft starters ADXL series Check out our video tutorials TUTORIAL VIDEO: [...]

By |2021-06-17T14:45:36+02:00February 4th, 2021|, |Comments Off on With the soft starters of the ADXL series … is it also possible to reverse the motor?

Is it possible via Modbus to send start / stop commands to an ADXL… series soft starter? Is it also possible to configure it via Modbus as well as control it?

Yes, all the parameters accessible from the display are also accessible via Modbus. _______________________________________________________________ Other information on this topic Visit the website page dedicated to ADXL... series soft starters. Check out our video LOVATO Electric - Soft starters ADXL series Check out our video tutorials TUTORIAL VIDEO: Auto setup - ADXL series soft starters LOVATO [...]

By |2021-01-04T16:25:20+02:00January 4th, 2021|, |0 Comments