Current monitoring/Motor load monitoring

[Phil Buchanan]

A vibratory feeder is a direct load so a plain ole vanilla current ring would work.

I like these from Automation Direct and they have them in a swicth and transducer model.

http://www.automationdirect.com/adc...coders/Current_-a-_Voltage_Sensors_(AC_-a-_DC)

 

[JesperMP]

The motor is used in a vibration feeder. AC 230V, pulling 11A at delta.

In that case, I recommend that you sense all 3 phases. With vibrating equipment, there is a high risk of wires coming loose or breaking.
We always use the aforementioned Carlo Gavazzi relay on all 3 phases on all motors on vibrating equipment. As an added bonus, it also covers all other imaginable causes for that the motor is not starting up.

 

[Wizlock]

Yes, Ive checked out some of the Gavazzi equipment. We use it in other areas as well.

 

[Phil Buchanan]

In that case, I recommend that you sense all 3 phases. With vibrating equipment, there is a high risk of wires coming loose or breaking.
We always use the aforementioned Carlo Gavazzi relay on all 3 phases on all motors on vibrating equipment. As an added bonus, it also covers all other imaginable causes for that the motor is not starting up.

I think he may have a single phase vibration feeder. If 3 phase then yes monitor all 3 indeed. if it is 3 phase I would again recommend load controls as they have a easy compact unit that handles all 3 phases and will do a switch and / or transducer output.

 

[Wizlock]

I think he may have a single phase vibration feeder. If 3 phase then yes monitor all 3 indeed. if it is 3 phase I would again recommend load controls as they have a easy compact unit that handles all 3 phases and will do a switch and / or transducer output.

It's 3 phase Delta.

 

[JesperMP]

He said "AC 230V, pulling 11A at delta".
So I am guessing it is a motor for 230V/400V D/Y.

 

[Wizlock]

He said "AC 230V, pulling 11A at delta".
So I am guessing it is a motor for 230V/400V D/Y.

Correct.

 

[osmanmom]

google,

http://www.imi-sensors.com/Sensors-For-Monitoring-Vibratory-Screens-Feeders

 

[tragically1969]

google,

http://www.imi-sensors.com/Sensors-For-Monitoring-Vibratory-Screens-Feeders

Vibration sensors for screens and feeders ? That's not going to help monitor the motor......

 

[Wizlock]

Screen, thats correct, I said feeder. But yea, a sensor wouldn't be optimal. It's a Mogensen Vibrational Screen.

 

[Phil Buchanan]

He said "AC 230V, pulling 11A at delta".
So I am guessing it is a motor for 230V/400V D/Y.

Indeed he did. I missed that in reading his post

 

[bkottaras]

Why not use a "zero speed sensor" on the output shaft and keep it simple?
(and cheap).

 

[JesperMP]

A vibratory agitator does not have an output shaft.

 

[Wizlock]

Correct, any other installation, for example a conveyor belt that would be the simplest. But here that's not possible.