Overview
Pumps are present in many application but their common problems and how to solve them are not so known by all professionals in the electric field. Let’s find out more in this webinar!
Webinar objectives
Commercial staff who wants to understand how solutions for pumps work.
Who should attend
Technical and commercial staff who wants to ever be up to date with LOVATO Electric novelties and deeper the knowledge on push buttons series.
Prerequisites
Electrical systems basic knowledge.
Contents
- common problems in pumps and pipings
- level controls
- pump control relays
- soft starters and VSDs with specific functions for pumps
- applications
Further readings and resources
Please visit the Pumping & piping application page on our website.
How to subscribe and join the event:
This webinar will be duplicated in two different sessions in different times. We recommend to join the event 15′ earlier.
Session 1
| Event address for attendees: | https://lovato.webex.com/weblink/register/r1479e5b8f338eb678542147571760218 |
| Date and time: |
Thursday, Mar 30, 2023 9:30 am | (UTC+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna |
Session 2
| Event address for attendees: | https://lovato.webex.com/weblink/register/r7718915db7567889bae7630865902be5 |
| Date and time: | Thursday, Mar 30, 2023 4:00 pm | (UTC+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna |
Recent FAQ
Condividi l'evento!
Yes, it is possible. The important thing is to size (choose) the soft starter so that its rated current is greater than or equal to the sum of the rated currents of the motors connected to it in parallel. So if I have to start two motors in parallel, one 5A and the other 15A, the soft starter must have a rated current of at least 20A. They do not necessarily have to be motors of the same size. As far as the thermal protection of the motors is concerned, the soft starter cannot take care of this, as it would interpret them as a single 20A motor. They must therefore be protected individually, e.g. with two overload relays or other equivalent solutions.
_______________________________________
Choose from LOVATO Electric soft starters:
https://catalogue.lovatoelectric.com/gl_en/Products/Soft-starters/CAP05/pc
See the tutorials on soft starters:
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)
________________________________________________________________
Other information on this topic
Visit the website page dedicated to contactors. Check out our video on BF series
 |
Visit the website page dedicated to ADXL… series soft starters and check out related videos
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
|
|
Visit the website page dedicated to ADXL… series soft starters and check out related videos
|
|
|
|
|
|
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 to the motor. It opens at the end of the deceleration ramp (or at the stop command in freewheel mode).
It keeps the line contactor energized as long as the motor is running, from the starting, up to the completion of the deceleration ramp.
Example. Line contactor managed with soft starter ADXL series
____________________________________________________________________________________________
Other information on this topic
Visit the website page dedicated to contactors. Check out our video on BF series
|
|
Visit the website page dedicated to ADXL… series soft starters and check out related videos
|
|
|
|
|
|
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 is used for protection purpose not switching.
_________________________________________________________________________________
Other information on this topic
Visit the website page dedicated to contactors. Check out our video on BF series
|
|
Visit the website page dedicated to ADXL… series soft starters and check out related videos
|
|
|
|
|
|
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 when the motor is not in use. The leakage currents through the thyristors may lead to dangerous voltages on the load side when the soft starter is supplied.
2.Protection of the internal thyristors: the line contactor isolates the soft starter and protects the internal thyristors from any problems present on the network, like severe voltage spikes on the incoming line, such as lightning strikes or downed power line, etc… à possible consequences: damage of the thyristors (short circuit).
3.Disconnect the soft starter from the supply in case of fault:
−without a line contactor the soft starter can only detect a fault condition (e.g., thyristors shorted, bypass relay stuck, etc…) and provide signalization using fault relay (if available) but is not able to stop the motor despite the stop command from the logic input.
−there must be a device that will react on fault signal and stop the motor!
For the reasons outlined above, the presence of the line contactor on soft starters is mandatory. The standard prescribes only requirements for the protection against short circuit and protection of the installation. But for the reasons just given, a line or isolation contactor is strongly suggested even if not mandatory.
____________________________________________________
Other information on this topic
Visit the website page dedicated to contactors. Check out our video on BF series
|
|
Visit the website page dedicated to ADXL… series soft starters and check out related videos
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 our website and find out more on ADXL… series soft starters.
Check out our video
Check out our video tutorials
|
|
|
|
Yes, all the parameters accessible from the display are also accessible via Modbus.
_______________________________________________________________
Other information on this topic
Visit our website and find out more on ADXL… series soft starters.
Check out our video
Check out our video tutorials
|
|
|
|
