Question about Electronics - Others

6 Answers

A 2.2 Kw inverter is no responding properly to a 4-20ma signal

The 4-20ma signal is generated by a current transformer on one of the phases of a 25Kw mill motor. The aim is to maintain a steady milling load of 45-50 amps on the mill motor.The 2.2 Kw inverter is running a rotory valve to feed the mill. As the mill amps goes up the rotory valve motor should slow down and speed up when the mill motor amps go down. This system has been working well for about three years but in the last four months it is performing very erratically. The parameters are set as :- F201 = 60%
F202 = 15.5?
F203 = 100?
F 204 = 8.7 hz
To try and keep the system working the opperator changes parameter F 204 from between 6.5 and 10

Posted by on

  • 1 more comment 
  • sean_reihill Jan 10, 2009

    It is not practical to replace the motor as it is a special motor

  • sean_reihill Jan 12, 2009

    The Variable Speed Drive is a 2.2 Kw Toshiba VF-97

  • sean_reihill Jan 14, 2009

    Thanks to all who replied but none of the solutions are of any help .I am going to try a different type of control Over and out.

×

6 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 2,071 Answers

Check the windings maybe there is ashorted one..

Posted on Jun 11, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 8,619 Answers

Hi! Did you checked out the frequency control. Is it set to default settings? If frequency is not the issue then the problem is with PI (proportional-integral) controller using which the variable speed is acheived.

Thanks
Rylee

Posted on Jan 12, 2009

  • Rylee Smith
    Rylee Smith Jan 12, 2009

    Ask for clarifications

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,913 Answers

Replace fuse condustor.set new fuse conductor.

Posted on Jan 10, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,550 Answers

The problem can be due to

  • The motor has an improper voltage rating .

  • The motor terminal voltage is too low .

  • The reduction gear ratio is not properly set .

  • Adjust the base frequency

Posted on Jan 08, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,011 Answers

Sir,

Click this link for more info. let me know if it is helpful or not

which inverter model and brand name do u using? tell me the details of ur products do u have

thanks
good luck

Posted on Jan 08, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 378 Answers

Check out the speed after replacing the motor at 1 end and see.or clean the motor.and check out.

Posted on Jan 08, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I need to convert 8 kw to kva


go google and type in---convert kw to kva--- there are heaps of sites with calculators including some u-tube videos

there are calculators with single phase and 3 phase calculations

Dec 10, 2016 | Electrical Supplies

1 Answer

All Codes for prius 2008


Hybrid System
P0A7A-309..........................................3
(Abnormality in generator inverter circuit)
P0A60-501..........................................1
(Phase V current sensor malfunction)
P0A75-516..........................................2
(Phase W current sensor malfunction)

A/C System
B1424 (Solar Sensor Circuit Abnormal)

ECB System
C1259 (HV system regenerative malfunction)
C1310 (Malfunction in HV system)

EPS System
C1546 (Malfunction in HV system)

AFS System
B2421 (Steering neutral point automatic correction incompletion)

Oct 01, 2016 | 2008 Toyota Prius

1 Answer

3phase to 1phase transformer


when your dealing with a high leg as long as your using two phase wires it is balanced. any two legs will give you 240 volts a.c.

Aug 29, 2015 | Heating & Cooling

1 Answer

E OC error in F4 KEB


Error. Over Current - Peak current exceeded

Possible causes:
Motor has a short - Phase to phase or phase to ground.
Motor cable damaged/defective.
Motor cables too long.
Acceleration/deceleration ramps too short.
Damaged output phase of inverter.
EMI

Mar 05, 2014 | Inverter KEB COMBIVERT F5

1 Answer

I purchased a generac 22 kw 3 phase 120/240 volt generator. I was surprised to find that it had a wild leg. Can i change the leads on the stator output to eliminate the high leg and get straight 120/208...


This unit is wired 120-240V 3 phase Delta. if you are using on it 120/208V 3 phase application it will need to be re-tapped. If you are using it in a home 120-240V single phase it will need re-tapping, Do NOT just use 2 legs, as this will cause rotor imbalance and wear out the rotor bearings, and odd ball currents to flow. If there are 12 leads coming off the stator it can be reconnected. If not you are stuck with it, except by using a transformer

Dec 15, 2013 | Generac Generator QT02224JNAX QuietSource...

1 Answer

Error messege EOC


Error. Over Current - Peak current exceeded

Possible causes:
Motor has a short - Phase to phase or phase to ground.
Motor cable damaged/defective.
Motor cables too long.
Acceleration/deceleration ramps too short.
Damaged output phase of inverter.
EMI

Sep 08, 2013 | Inverter KEB COMBIVERT F5

1 Answer

Kubota generator a45 3 120 manuals


Not a very good model number. 45KW generaters don't come in 3 phase and 120 volts.

Try one of these places and see if they can get what you need:

http://www.kubotaengine.com/products/ge_lineup.html


http://www.dieselgeneratorsmiami.com/powergeneral/2/45-kw-to-95-kw-diesel-generators.html

Sep 30, 2012 | Electrical Supplies

1 Answer

I am installinga 4548 inverter. At 4500 watts, it puts out approximately 20 amp per phase. My generater that will feed the charging current for the batteries will put outapproximately 28 amps. Is the...


Let just wait a minute. You have an inverter that is rated at 4500 watts. This spooky. The inverter has a three phase input/three phase output? What is the inverter going to be used for?

Next question. What type of batteries are you using and what is the voltage/current in series or parallel? What will be the total voltage you will producing with the batteries? What is the total current of the batteries.

Another question? What is the voltage of the 28 amps? If it going to dump 28 amps across some batteries that rated at 12 volts and 1400 amp/hrs. For 12 volt batteries with a total of 1400 amps. What you will need approx 14 to 14 1/2 DC and with 28 amps across the batteries for charging these batteries. The batteries will be gone in about 1 hour. Boil all the water out of them. When a battery starts to boil it release water with hydrogen gas (the gas is very explosive and dangerous).

You also don't have a regulation circuit to limit the amount of current depending on the needs of the batteries. Also, you don't have a trickle charger to keep the batteries fully charge when the batteries are idle.

You will also need DC regulated charger that will keep the voltage 2-4 volts above you battery voltage. Without this voltage above the batteries voltage it will not charge those batters. Batteries need to forced to except a charge that why voltage above the source voltage. If you can check the voltage on your car/truck with a 12 volt system. While engine is running the voltage across the battery will be 13.8 to 14.1 volts. Now, the current limiter is the alternator it has a regulator built into it for stabiizing voltage and current went the batteries require more current but it limited by alternator regulator
Now, to get more current out of the alternator the regulator will supply dc voltage to the stator of the alternator generator more current. More dc voltage is supplied by the regulator but the dc voltages is limit to about 24 volts. Another limiting factor is the alternator copper windings diameter---larger diameter more current, small diameter less current. Utilities systems use big mega watts generators. The maxi um dc voltage for these three phase generator would like 500 to 800dc volts for peak to peak output. There is a simpler way of doing this.

You need to rethink everything here. Also, I can help you if you supply the needed information.
I truly wish you luck in your electrical endeavors. GB you. stewbison

Aug 22, 2011 | Refrigerators

Not finding what you are looking for?
Electronics - Others Logo

Related Topics:

71 people viewed this question

Ask a Question

Usually answered in minutes!

Top Electronics - Others Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

kakima

Level 3 Expert

102366 Answers

Brad Brown

Level 3 Expert

15100 Answers

Are you an Electronics - Other Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...