from the Siemens/Schneider/Beckhoff or other?! department...New to the motion world
Hello I have a new project with 11 axes of motion (Servos) and need advice on one of three options.
By William Sturm on 29 July, 2014 - 11:40 am -
If you are new to motion, I would advise using whichever product seems to be the most mature. New...
from the Forum department...VFD and nominal RPM of motor
Nominal RPM on motor plate lower than can be set in VFD
from the Forum department...Field-bus Actuator Recommendation
Looking for recommendations for a Field-bus Actuator
Anyone have any suggestions? ...
Thanks David, but i think I'm looking for something different then those you recommend. I'm...
You need a positioner with Fieldbus communications, not an actuator. The actuator does the...
from the Forum department...Driving a Stepper Motor
I am seeking advice on the best methods to effectively control a stepper motor.
Why a stepper motor and not a BLDC motor?...
from the Forum department...Single Controller for a Flow and Pressure Control Valve
Single controller for multiple purposes
By Sam on 14 July, 2014 - 9:00 am -
Sound a lot like a split range control that you need to do in this application. In a split range...
from the Automation List department...Unit of Shock
what does Maximum Shock Protection =5,000 g, peak mean?
By Curt Wuollet on 12 July, 2014 - 12:31 am -
Gravity. 1G is what holds you to the earth. Regards cww...
By Faris on 11 July, 2014 - 12:02 pm -
But what does G really stands for? I mean g can be grams and MB can be Mega Bytes But what...
from the Electrical department...VFD AC Motor Issue
Starting and running an ABB type AC motor
from the Automation List department...Noise Problem with VFD/motor
I have a noise problem associated with a VFD/motor (75HP 460v wye start/delta run) system...
By Kevin on 10 July, 2014 - 8:46 am -
Dear Sir, I was doing some trouble shooting and observation on inverter operation today. We have...
from the r&d department...Magnetic pickup - amplitude or frequency
Magnetic pickup - amplitude or frequency
Ramana, There is a lot of good and applicable information in the previous posts to this thread....
By Ramana on 9 July, 2014 - 7:46 am -
Dear friend, Please need a help about magnetic pickup unit sensor. Am confused about the sensor...
from the Electrical Servo Drives department...electrical servo drives health check
On site servo drives health check
from the electrical department...hand off auto - wiring a mcc bucket
does hand mean hand or Auto?
By d on 7 July, 2014 - 4:06 am -
OFF - control circuit de-energized AUTO - the rungs containing the automatic controls are...
from the Forum department...Maintaining constant RPM
Energy stored in wounded spring!
I believe that you refer to centrifugal pendulum based governor used in diesel generators to...
>How do old mechanical gramophones >ensure constant RPM output? They use spring loaded...
from the Load VS Speed department...Variable frequency AC Drive
How load in form Torque varies with speed.............
By Bob Peterson on 2 July, 2014 - 10:22 am -
a VFD operating in V/Hz mode at under 3% of its rated frequency is probably not going to develop...
By Gerald Beaudoin on 2 July, 2014 - 8:37 am -
Trying to run a motor at <3% of the rated speed is never very good. First of all, cooling...
from the DESIGN department...BLDC motor selection
I want to select a BLDC motor for the application.
By VIJAYKUAMR on 30 June, 2014 - 1:49 am -
Thank you for the reply. But indirectly the motor is responsible for the response of the...
It seems that you talk about system resolition in mrad. And this question is more related to...
from the Forum department...Aeg minisemi dc drive
i need a user manual for Aeg minisemi dc drive.
from the Automation department...FC51 Danfoss VFD MODBUS
I need to control a FC51 Danfoss VFD with LS PLC.
I need to start , stop & jog the drives.
I need to start , stop & jog the drives.
By Farhad on 28 June, 2014 - 4:35 am -
Hi, I have this problem too. I have set all the parameters to control the drive as modbus. I...
from the Forum department...Avoid motor overheating
question on induction motor and overheating
By damien herold on 26 June, 2014 - 1:21 pm -
>I would bet on it, it also won't have >much for torque if it will run that slow >at...
from the Forum department...Encoder requirements for a motion application (low speed/holding positions)
Encoder requirements for a motion application (low speed/holding positions)
By Peter Nachtwey on 25 June, 2014 - 11:37 am -
How fast you want to go is usually not a problem. How slow you want to go is. If the controller...
from the Automation List department...Troubleshooting Resolvers
We have a number of Harowe harosyn-rw resolvers that are giving us some problems on an old GE servo motor,(used in a B&S CNC). Can someone explain how to test resolvers using basic test equipment?
By o tempora on 23 June, 2014 - 12:36 pm -
This works as of June 2014 There is not a space after the "40", which for some reason...
from the Instrument &Control department...Control Valve Positioner Action & Travel Scale
Control Valve FF positioner (Masoneilan FVP-110) Action (Direct/Reverse) and travel scale range.
By I Muchimwe on 23 June, 2014 - 5:53 am -
Please take note that there are 3 actions/parameters which determines the final valve travel...
from the Forum department...automation of ac motor
problem installing timer relay for AC motor with VFD
from the Forum department...Pneumatic tubing colors
pneumatic control circuit tubing color code standards
the standard is customized, and stated on the pneumatic plan. for example: BLUE: AIR SUPPLY ...
from the Forum department...VVVF drives - Internal speed calculation
How is speed of the motor calculated INTERNALLY by a VVVF drive?
By Curt Wuollet on 9 June, 2014 - 7:03 pm -
An educated guess usually. For most purposes 100% accuracy isn't important and if it is, you use an...
By Setu on 8 June, 2014 - 10:05 pm -
> For induction motors: > Drive output freq - slip = motor speed. How will the drive know...
By krishnan on 8 June, 2014 - 11:42 am -
As per my understanding for drives without encoders the drive calculates the actual speed based on...
By Curt Wuollet on 8 June, 2014 - 9:28 am -
For induction motors: Drive output freq - slip = motor speed. Regards cww...
from the Electrical Motor department...DOL starter Motor to convert Drive control motor
Need to change with a 37 KW DOL starter (3 Wire) winding to suitable soft starter or drive control to reduce starting load.
from the Electrical Engineer department...VFD Speed
Over speeding a motor by reference signal even if the frequency limit has been set in the VFD module
By Steve Myres on 26 May, 2014 - 12:41 pm -
Shouldn't be. Every ABB drive I'm familiar with respects the limits regardless of any other...
from the Forum department...Yaskawa servo motor
Yaskawa servo motor working noisy & vibrating
The possible reason for noise is instability of velocity loop usually leading to current ripple...
from the Forum department...Why Integration in PID causes overshoot?
Understanding of how PID controller affect a system.
By Hans H. Eder on 23 May, 2014 - 1:04 pm -
> Could you tell us what control system you're using? i.e., DeltaV? Yokogawa? ControlLogix? ...
By Fluoronator on 23 May, 2014 - 7:37 am -
Could you tell us what control system you're using? i.e., DeltaV? Yokogawa? ControlLogix?...
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