from the Forum department...Braking systems of industrial fans
control strategies for braking and industrial fan
if it's across the line you can: 1) coast stop - i.e. just open up the contactor 2) use...
from the dc link under voltage department...weg ac drive tripping
weg ac drive tripping on voltage dips
i would contact WEG. enabling ride through should be enough....
from the None department...Multiple phase motor
Running a multiple phase motor on a single phase
I agree with steve...another option is it could be a 1 with the greek letter phi after it for...
from the Forum department...need your advice on a right motor
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.
> What are you folks using and do you like what you have? what do you think of Baldors? what are...
from the major PLC fault department...control logix RTO preset going to negative value
negative value loads into preset on its own
from the Electric department...Electric motor drive change over with VFD and bypass circuit
Electric motor drive change over with VFD and bypass circuit
I would have to agree with Steve King. My best guess is that (and I may be pointing out the...
from the maintenance department...AC drive speed control
Speed control in AC drive
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 indradrive
Obtain constant load using linear exlar motor driven by indradrive. This load is pushing against another linearly driven rod.
i'm not too familiar with indradrive, but all drives have a torque limit, positive, negative,...
from the serious department...L7x Pricing
Why a $5K price difference between a 1756-L71 and 1756-L73
from the Electrical Engineering department...DC motor speed control at constant torque
How would I control speed of DC motor with constant torque/current?
torque and speed are not necessarily related as much as you may think. torque = motor current ...
from the supermen department...VFD terminology
what does the word reference exactly mean in the VFD context
The "reference" is what the drive "refers" to for a particular input. In the...
from the Forum department...Unidrive 2402
Drive not resetting to factory
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...
from the Forum department...Protection for Servo motor drive
How do I protect the servo motor drive from failure when drive is connected to input supply through mcb?
What kind of failure are you seeing? Input diodes? IGBT's? Caps? Control Circuits?...
from the Forum department...Motion and general machine control integrated
2 axis motion control and PLC logic all in on package.
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...
from the Tube Mill Manufacturing Machine department...IGBT Failure in VFD
IGBT Failure in VFDs
if you have burnt components, you probably have either a power surge or loose screws on a fuse or...
from the Forum department...AC Motor Drives
Substitute for ac motor drive
the short answer is no. most VFD rated motors have a different motor current curve than across the...
from the Learn By Doing department...How to control a 4 AC motor drived Chain conveyor?
How to control a 4 AC motor drived Chain conveyor?
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...
from the Forum department...HELP Identify 1980's PC Motion control hardware/software
Trying to identify old system Motion control hardware and software runs on a Pentium 2 PC Mid 1980's
from the the idealists department...Motor basics
new to motors, need some help with motor basics
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...
from the Forum department...How to interpret "speed control range" ratios
How to interpret the speed control features of inverter drives for induction motor.
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...
from the Mars department...Problems between frenquecy invertor & motor
Motor Control of 3-phase frequency inverter
there is no parameter in the 700 for delta vs. wye. I would hook it up and set the motor data, try...
from the Single Phase 240VAC department...Power wiring for VFD
Power Wiring for Single phase 240VAC VFD.
per pages 8 and 14 of the manual (using the model number you provided) you can connect this to...
from the Forum department...Help needed with a simple Add On Instruction
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.
this may be obvious, but did you set the enable in and enable out bits? you don't mention them...
from the Elevator pump motor department...3-phase readings on VOM
I need some info on what I should read on my VOM when checking 3-phase service to a 240V hydro pump motor
> 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...
from the ece department...Transfer function
hello, i need to know how can i find the transfer function for a plant:
from what I remember to go from the time domain to the s-domain you have to use laplace...
from the Electrical department...AC Drive Over Voltage Trip
AC Drive Over Voltage Trip
regen = regenerative i.e. how much you allow it to draw energy from the motor. as previously...
from the r&d department...Magnetic pickup - amplitude or frequency
Magnetic pickup - amplitude or frequency
syurish, I think Ron's point is that this dude is trying to do something crude and to get it...
from the Forum department...VFS v/s Vector Control drive
what is the difference between a vector control drive and a variable frequency drive?
"uses an encoder to read motor angle" that statement is a little misleading......
from the 3 phase minus 2 department...Looking for a AC Drive/Regen Unit
240V Single Phase - Openloop PMAC drive with Regen OR a Standalone Regen
from the BuckStopper department...Need HMI interface for Frequency Drive
Looking for an inexpensive HMI interface for an AC Frequency drive
I like the commander series (SK) from emerson-ct and it works well standalone with maple systems...
from the Forum department...Runaway servo motor
Encountering some strange servo motor runaways with one of our machines
I would suggest setting up this M variable or similar to look for noise when using quadrature...
from the Forum department...Oscilloscope for troubleshooting encoders, drives etc.
What is the right oscilloscope for a maintenance guy?
I have sucessfully used the Fluke 123 and other Fluke ScopeMeters on DC and AC drives for about 14...
from the maintenance department...UNIDRIVE 2402
UNIDRIVE 2402 and power PCB and UD90A
The power PCB is likely the board that interfaces to the IGBT's and current sensors. The UD90A...
from the 900 MHz department...Wirelss Industrial I/O
Looking for Wireless I/O Products
from the Forum department...Bypassing motherboard on treadmill with 90 V DC motor
I'd like to bypass the motherboard on a treadmill
you probably need to define this better. the motherboard is basically DC drive, if you are to...
from the astronomical instrumentation department...C code on a PLC
We are re-implementing the motion control of an astronomical telescope, and need to include complex calculations (in C code) into the position loop.
> 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...
from the Automation Applications department...Rotart Shear cutter into Metal sheet cutting
Machine which we are going to do with Rotart shear cutter for cutting metal sheets from 800 mm to 5000 mm
your customer is correct you should be able to develop a profile for constant motion... you...
from the Forum department...Difference B/W PLC and Motion controllers
What are the difference between PLC and motion controllers
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...
"When you are in it up to your ears, keep your mouth shut."