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control strategies for braking and industrial fan
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if it's across the line you can:
1) coast stop - i.e. just open up the contactor
2) use...
weg ac drive tripping on voltage dips
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i would contact WEG. enabling ride through should be enough....
Running a multiple phase motor on a single phase
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I agree with steve...another option is it could be a 1 with the greek letter phi after it for...
Need your advice. I'm planning to upgrade my air compressor. I have Duracraft air compressor for a while and motor is not working good anymore.
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> What are you folks using and do you like what you have? what do you think of Baldors? what are...
negative value loads into preset on its own
Electric motor drive change over with VFD and bypass circuit
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I would have to agree with Steve King. My best guess is that (and I may be pointing out the...
Speed control in AC drive
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Sensor-less vector (open-loop_
>How does the drive calculate the actual speed?
you...
> 1) AC drive (V/F) without speed sensor connected to the rotor, How does the drive calculate...
from the Control Engineering department...
Provide constant load using linear exlar motor driven by indradriveObtain constant load using linear exlar motor driven by indradrive. This load is pushing against another linearly driven rod.
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i'm not too familiar with indradrive, but all drives have a torque limit, positive, negative,...
Why a $5K price difference between a 1756-L71 and 1756-L73
How would I control speed of DC motor with constant torque/current?
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torque and speed are not necessarily related as much as you may think.
torque = motor current
...
what does the word reference exactly mean in the VFD context
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The "reference" is what the drive "refers" to for a particular input. In the...
Drive not resetting to factory
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enter your 149 into 0.00 to unlock
go to 0.48 and change it to 0 to get open loop
go to 0.00 to...
How do I protect the servo motor drive from failure when drive is connected to input supply through mcb?
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What kind of failure are you seeing? Input diodes? IGBT's? Caps? Control Circuits?...
2 axis motion control and PLC logic all in on package.
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from what I understand Indramat does not have an add on profile so you will need to set up a...
If you want to do it "cheap", look for a drive that has built in indexing and use Digital...
IGBT Failure in VFDs
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if you have burnt components, you probably have either a power surge or loose screws on a fuse or...
Substitute for ac motor drive
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the short answer is no. most VFD rated motors have a different motor current curve than across the...
How to control a 4 AC motor drived Chain conveyor?
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in my previous posts, i did suggest a speed follower with a torque limit. that should fix your bag...
steve,
i have to admit i did read through your post kind of fast. on a second go round you're...
there are only so many ways to make motors follow each other... i never worked on a conveyor like...
Trying to identify old system Motion control hardware and software runs on a Pentium 2 PC Mid 1980's
new to motors, need some help with motor basics
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let me correct myself before someone else does. past/above base speed the voltage remains constant...
what i believe now, the hp specified on the motor is the maximum power the motor >can...
I guess the way I look at it... load is torque or current (amps)... voltage is speed... HP or kW...
How to interpret the speed control features of inverter drives for induction motor.
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By motor "base" speed do you mean the speed at which the motor is rated to run...
What this means is if the base speed of your motor is 1800 RPM the drive will allow you to do a...
Motor Control of 3-phase frequency inverter
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there is no parameter in the 700 for delta vs. wye. I would hook it up and set the motor data, try...
Power Wiring for Single phase 240VAC VFD.
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per pages 8 and 14 of the manual (using the model number you provided) you can connect this to...
I am attempting to write a very simple Add-On-Instruction using Logix 5000 Version 16.00.00 but nothing I've tried actually works.
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this may be obvious, but did you set the enable in and enable out bits?
you don't mention them...
I need some info on what I should read on my VOM when checking 3-phase service to a 240V hydro pump motor
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> I never heard of a 3 phase wye system at 240V.
just a fyi bob... drive isolation...
sounds like you have grounded wye system. you should read 240 phase to phase and ~140 phase to...
hello, i need to know how can i find the transfer function for a plant:
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from what I remember to go from the time domain to the s-domain you have to use laplace...
AC Drive Over Voltage Trip
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regen = regenerative i.e. how much you allow it to draw energy from the motor.
as previously...
Magnetic pickup - amplitude or frequency
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syurish,
I think Ron's point is that this dude is trying to do something crude and to get it...
what is the difference between a vector control drive and a variable frequency drive?
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"uses an encoder to read motor angle"
that statement is a little misleading......
240V Single Phase - Openloop PMAC drive with Regen OR a Standalone Regen
Looking for an inexpensive HMI interface for an AC Frequency drive
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I like the commander series (SK) from emerson-ct and it works well standalone with maple systems...
Encountering some strange servo motor runaways with one of our machines
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I would suggest setting up this M variable or similar to look for noise when using quadrature...
What is the right oscilloscope for a maintenance guy?
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I have sucessfully used the Fluke 123 and other Fluke ScopeMeters on DC and AC drives for about 14...
UNIDRIVE 2402 and power PCB and UD90A
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The power PCB is likely the board that interfaces to the IGBT's and current sensors.
The UD90A...
Looking for Wireless I/O Products
I'd like to bypass the motherboard on a treadmill
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you probably need to define this better. the motherboard is basically DC drive, if you are to...
We are re-implementing the motion control of an astronomical telescope, and need to include complex calculations (in C code) into the position loop.
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> serious motion application? In the task we have just several independent axes. Modern approach...
> Hmm I will look for alternatives but I'm a bit surprised, because the general NI-DAQmx LabVIEW...
Machine which we are going to do with Rotart shear cutter for cutting metal sheets from 800 mm to 5000 mm
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your customer is correct you should be able to develop a profile for constant motion... you...
What are the difference between PLC and motion controllers
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Yes, the Power PMAC looks pretty slick. Glad to see they have plans for PowerLink EtherCat etc. ...
Ken is right, sometimes the work arounds don't exist (and you sit there frustrated wishing you had...
This is like opening a can of worms. My opinion is those who were historically Motion Control...
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