Rexroth FE Modbus Control
Problems controlling a Rexroth FE variable frequency drive over RS485 MODBUS
GML Commander on an AB 4100 Controller
Communication error when connecting GML Commander to an AB 4100-234-RL.
Altivar 61 Parameter Question
Can Altivar 61's parameters change by themselves?
I try to communicate ABB ACS880 drive with DCS using RPBA-01 emulation without changing the configuration on DCS.
Do VSD which has been stored for more than 3 yrs need to "pre-charge" before powering with main supply?
Inverter with Lower Voltage Motor
Using a 460v Inverter with a 400v motor
GE DC 300 Drive FL15 VFBLS Fault
Posted by Dennis J. Reisinger on 16 June, 2017 - 7:51 am
Heidelberg 9 unit press with dual DC300 drives. Primary drive faults during jog.
Pick and Place Fabrication
Need information on all considerations for the manufacture of pick and place units.
Cut to Length Servo Control
Which application is best suited for this?
What goes with AC stepper drive, a stepper AC motor?
induction Motor V/Hz Ratio Is Low - Effect?
Induction motor run at a lower than designed V/hz ratio...what happens?
Wiring Diagrams for Rotork Electric Actuator
Need manual and wiring for rotork model k30 F10A
By Bob Peterson on 28 May, 2017 - 2:34 pm
Most of the ones I have seen have a wiring diagram on the inside cover of the terminal box....
Oscilations with Multiple PIDs
Control of a (simulated) humanoid robot with PIDs to control each joint: osculations at 0.5*simulation frequency (=0.5*control frequency)
By d on 21 May, 2017 - 12:20 pm
You have to look at the physical geometry of your system to sort out the interactions, since every...
Communicating with an Allen Bradley 1394 GMC Digital Servo
Problems Communicating with Allen Bradley 1394 GMC turbo system
Connectors for AB Kinetix Drive
Posted by Rob Riley on 17 May, 2017 - 5:40 pm
Need connectors for the Allen Bradley Kinetix 5500 drive power in/out, encoder, DC power, etc...
Allen Bradley 1336 PLUS Drive - Restart After a Power Blip
Allen Bradley 1336 PLUS drive trips off after a power blip. Faults show power line loss and low bus fault.
Conecting a FC51 Danfoss VFD Using MODBUS
Controlling a FC51 Danfoss VFD with a PLC to start, stop & jog the drives.
RTU over Ethernet Problem
Load Reactor Failure in Variable Frequency Drive
Repeated failure of load reactor on variable frequency drive
Torque and speed control in BLDC motors
I want to know the details of a speed control for a BLDC motors. I want to know the relation between the torque variation during speed control.
Wiring Up 7 Emergency Stops on a Conveyor
Looking for a diagram for wiring emergency stops on a conveyor.
By d on 30 March, 2017 - 2:33 pm
It is a matter of what is meant by e-Stop. A simple PLC (non-redundant) shut-off does not...
By Bob Peterson on 28 March, 2017 - 2:28 pm
without knowing more about what you actually have it is very hard to give you any advice. most such...
Variable Speed Drive for Pump Control
Variable speed pump and control
on 3 April, 2017 - 9:57 am
OmerASD, as you mentioned there's internal PID controller in VFD. so can I used to replace the...
PID Control Alternatives in Electro-mechanical Applications
What are Modern Alternatives to PID control in electromechanical systems and how are they different?
Differences between Servo and Vector PLCs
Differences between Servo PLC and Vector PLC and between Servo Inverter and Vector Inverter
By James Ingraham on 3 April, 2017 - 9:54 am
JRaef2, I love your explanation. One slight detail, modern vector drives are capable of running...
Beginner AC Servo Motor Guide
How to control AC servo motors.
Advice on a DC Motor Setup
Need help with setting the speed feedback for a 225 DC Motor with a ABB DCS800 drive
I am currently battling with a conveyor belt application where a 4M wide 1200M long belt driven by 4 motors using scoop actuated fluid couplings (which when fully engaged) uses almost twice the KW in 2 of the motors, as it does in the other 2. Can anyone direct me to a source of information on this subject, or perhaps offer an explanation as to why and how to control this ...
By Robert Miller on 10 January, 2017 - 5:50 pm
I work with 3 phase asynchronous motors often in dual or triple tandem. sometimes 5 motors (series...
Discovering Connected Modbus Devices
I would like to write a discovery tool which automatically detects the connected modbus devices behind the TCP/IP gateway
Understanding Electric Motor Dynamometers
I am trying to build a electric motor dynamometer to test AC/DC motors up to 20HP. I need help understanding some of the parts please.
Magnetically Coupled Drives
Can I use a magnetically coupled drive work through 2 inch thick polypropylene?
Drive PWM/Carrier Frequency Question
How does the carrier frequency relate to number of pulses a PWM drive puts out?
Placing a Motor in an Explosion Proof / Intrinsically Safe Location
What are the physical/electrical barrier requirements if I want to locate a motor in a hazardous location with its associated drive outside of the hazardous location?