How to Brake Single Phase Motor
Trying to reduce motor stop time after removal of power. Tried DC injection with limited effectiveness. Need to find a better method.
By Curt Wuollet on 25 July, 2015 - 3:59 pm
Many of these schemes for single phase motors charge a large capacitor when running and dump it...
AC Vector Web Drive - Dynamic Brake Resistor Required?
AC Vector Drive for web handling application - will I need a dynamic brake resistor?
Choosing Brands of contactors.
How to find the BLDC Motor transfer function
Transfer function of the BLDC Motor
By Dilip on 17 July, 2015 - 2:08 pm
hello Tom, Please provide me details regarding transfer function of BLDC motor and motion...
Controller Design for an Exponential Plant of the Form y=a*exp(bx)
PID control for plants of the form y = a*exp(b*x)
When should we use LQR Controller and PID controller?
Help with Student Project, Motorized Turntable
I have been tasked with building a mock record player for the local high school band and am in need of some help figuring out what motor type and size to use for the project.
By Bob Peterson on 24 June, 2015 - 6:22 pm
This sounds like a lawsuit in the making. Having said that, I would think a small PM DC motor...
Getting 1-5 VDC Output from 15 VAC Using 4-20 ma as Control Current
I need some help to get 1-5vdc output from 15vac using 4-20ma as control current.
How Power Transmission Relates with Drives & Motion Control ?
Posted by Rushi Shroff on 21 June, 2015 - 4:30 am
Curious about the relationship between power transmission and motion control
Two Relay Contacts Connecting In Series To Increase Contact Life Cycle
Why connect two relay contacts in series can increase the contact life cycle
Results of Losing Second Liquid Fuel When Gas Turbine Operates on Dual Fuel
what happen when the GT operates on crude oil (HFO) and the second Liquid fuel (LDO) is lost due to faults in the distillate pumps?
on 1 June, 2015 - 2:48 pm
Yes, exactly. Machines which run on HFO must almost ALWAYS be started and stopped on LDO for the...
By AhmedWaleed on 1 June, 2015 - 11:46 am
You mean that the machine will not take any action if I lost the distillate fuel when it running on...
Unidrive UD70-UD70 Communication
Unidrive classic UD70 application module communication
Problem Communicating with Siemens G120 Drive Using MODBUS
Problem when writing to control word register for Siemens (SINAMICS G 120) drive using MODBUS
BOSCH CC300 Reference Position
How to adjust tool reference position
Software to Automatically Test PLC Programs
Can any one suggest any tool to automate test for our programs? We are currently using CodeSys 2.3 platform.
Master/Slave Help to Synchronize the Speed of Two Different Sized Rollers
Trying to synchronize surface speeds of two different size rollers.. Using AB Powerflex 4 VFD
MODBUS Issue with Momentum PLC and Concept 2.6 LL984
Concept 2.6, Momentum 170 CCC 78010, VSD ATV61
Calibrating a Rosemount 3051 Differential Press. Trans.
Have problems getting a new pressure transmitter to read the correct level.
By Roy Matson on 22 April, 2015 - 1:25 pm
"When the sensor is running in the process it does not read as per the redundant ultrasonic...
By jeff fraley on 22 April, 2015 - 9:10 am
Perhaps I am missing something but here goes. You appear to have a dp transmitter to measure simple...
Wiring a Servo Motor LT to terminate in DCS but also connected to local indicator.
What a Control Engineer Should Know
I search after information that can explain to me more about what a control engineer in robotics company should to know
Do you connect the safety relay output to a PLC input or Drive input?
By Gerald Beaudoin on 2 April, 2015 - 1:23 pm
Depending on the application/risks/consequences you may even need to consider using drives that...
By Raju on 2 April, 2015 - 12:45 pm
Hello, The later one is the correct. The output of the safety relay should be hard-wired to...
Calculate the Speed of Conveyor.
Calculating the speed of a conveyor belt, using Allan Bradley Powerflex 40. Converting Hz to km/h.
By Chapman Industries on 9 April, 2015 - 3:00 pm
Interesting thread! Check out www.hydraulicandpneumatics.com for hydraulic and pneumatic products....
By Roy Matsom on 27 March, 2015 - 4:52 pm
> In the PF40, parameter A099 is the "Process Factor", a multiplier that is applied ...
By Roy Matson on 19 March, 2015 - 7:56 pm
The way to accurately find the speed of a conveyor is to measure the length then time it for 1 or...
Rotor Angle Measurement Using Proximity Sensor
Need help understanding how to measure rotor angle using single inductive proximity sensor and speed signal which is also measured using proximity sensor.
Brushless DC Motor's Peak Torque
Peak Torque calculation for BLDC motor
Feedback Control With Not Enough Sensor Sample Rate
Want to control a mass-spring-damping system's output displacement as a 1kHz sine wave. The displacement sensor's sample rate is not high enough. A paper said adding a integrator can solve the problem, I don't understand the reason.
Woodward 4024 Actuator Model 8256-060 Testing/Repair
Obsolete Woodward 4024 Actuator Model 8256-060 Testing/Repair
By Tim Hinde on 1 April, 2015 - 11:30 pm
Have you checked the resistance of the actuator? It is a very low resistance typically 1-2 ohms. If...
Cheap Displacement Measurement Sensors
Looking for a inexpensive displacement measurement sensor with a 200~300mm range and about 0.2~0.3mm resolution.
Wind-Up Applications Using Brushless DC Motor
Question regarding the control of a wind-up reel on a label applicator with no sensors other than those contained in the motor.
Formulas for Calculating BLDC Motor specs
I want to know specs of BLDC motors and Battery bank ratings required for my Electric car project.
Need to learn and troubleshoot VFD
I'm trying to fix a Saftronics PC7 Mini Vector drive that fails with "over current" when started when it is cold. If it is powered up for hours then it works much better.
trying to save energy with a VFD on a constant centrifugal fan load.
By Jeff on 13 March, 2015 - 12:33 pm
I realize this is an old thread but you guys are not correct. Reducing the size of the drive...
What is the easiest way to strip a HART signal?