Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: sham96
  • Content: Threads
  • Order by date
  1. sham96

    230VAC Contactor (24VDC Coil) wiring with 24VDC Proximity Sensor

    Hello Everyone! I am trying to figure out how to connect a 24VDC NPN Proximity Sensor to a 230VAC contactor with 24VDC coil. I need the contactor to turn ON/OFF with the sensor signal. I have followed the below wiring diagram but my attempts have been unsuccessful (The contactor does not switch...
  2. sham96

    Forward and Reverse VFD Wiring for Lift Application

    Hello Everyone! I have an application where I use a VFD to control a 3-Phase AC motor. The application involves a lift which is used to transfer a load from point A to B and after unloading the lift needs to return from Point B to A. I currently am using two Normally-Open push buttons for...
  3. sham96

    Forward / Reverse Switching of Single-Phase Motor

    Hello Everyone! I have a single-phase motor which I want to run in forward and reverse directions using a DPDT switch. The wiring diagram for both CW and CCW is shown below: Could someone please tell me how I should do this? Any help is appreciated!
  4. sham96

    4-Pole Single-Phase AC Motor Wiring

    Hello Everyone! We recently purchased a Speed-Control Single-Phase AC induction motor with the following specs: Model : 51K40RGN-C (Oriental Motor) Rated Power : 40W Rated Voltage : 200V No. Of Poles : 4 Rated Current : 0.5A uF : 2.5 This motor consists of four wires (blue,black,yellow and...
  5. sham96

    Speed Control of Single-Phase Induction Motor

    Hello Everyone! I have a single-phase reversible induction motor with the following specifications: Model : 4RK25GK-AUL Rated Power: 20W Rated Voltage: 100V Rated Current: 0.57A uF : 8 I am looking for a way to control its speed. Can I use a dimmer switch or a fan-speed control switch to do...
  6. sham96

    Type of Contactor for Direction Change of Single-Phase IM

    hello everyone! I want to change the direction of rotation (FORWARD and REVERSE) of a single-phase induction motor using two magnetic contactors. However I am confused as to the type of contactors I should use: 1. Should it be a NO or NC type four-pole contactor? (220V coil) Photo attached...
  7. sham96

    Potentiometer Reading Does Not Reach Zero

    Hello Everyone! So in one of our machines , a potentiometer is installed along with an Ammeter display. When the resistance of the potentiometer is changed, the ammeter reading also changes correspondingly. However this reading never reaches zero when the potentiometer dial is at zero! We tried...
  8. sham96

    Connecting an encoder to a VFD

    Hello Everyone! So we have this application that requires precise control of motor speed and torque. We were told that via the addition of an encoder , an ac drive can get speed feedback from the motor which can then be incorporated in the drive's control algorithm for closed-loop control. Can...
  9. sham96

    Increase the Output Frequency of ABB-ACS550 Drive

    Hello Everyone! Recently we purchased an ABB-ACS550 drive and connected it to a 5.5KW motor.When we tried to increase the output frequency above 150HZ the motor speed increases correspondingly but above 105Hz , the motor slows down and stops. When the output frequency is then decreased the...
  10. sham96

    Motor Speed Control using PLC and VFD

    Hello Everyone! I've seen many posts that are related to this topic, but i haven't yet found a thread that can answer my question so any help would be so greatly appreciated. I have a motor which i want to run at at different speeds at different time periods automatically. I can connect a 4-20...

Part and Inventory Search