Thank you all for your help! I have never had an application to run a DC actuator so far out. I really appreciate the information and direction you all have privided. I am going to find out what available power is at the control site and what power is close to the valve location. The actuator...
I have a 24VDC reversing motor being moved 2700 feet from the controller power source. The motor requires 6 amps for normal operation but it is a torque motor in a valve actuator and requires 51 amps locked-rotor. Since it starts under a load the starting current is about the same as locked...
I would like to thank all of you for your information. The 50A LRA is for the new 24VDC motor. I did not think I could use the DC-DC converter between the starter and the motor but I was not sure if I was finding the right product. Thank you for setting me straight there. It looks like any...
I have an application where I am replacing a 250VDC reversable motor with 24VDC reversable motor. I need an efficient way to reduce the voltage to the motor. Would I just use a DC-DC converter rated for the motor FLA? This would need to be up the line from the customers controls to reverse...
I am sorry I titled this "Stator Rust" when it is rust on the rotor that is the problem. I was looking at one thing and typing another. Thank you for your help.
I have some fractional hp, 120vac motors that we have found quite a bit of rust on the rotors. These are rated at about 35oz.ins. of torque and I need every bit I can get. Will the rust on the rotors drive up the amp draw or reduce the torque output or both? Any help is appreciated.
Thanks unclesyd,
I emailed Micromo a few hours ago while looking at the surplusmotor.com website. I described the application I have and I am waiting for a reply.
Their motors look to have the qualities I need.
Thanks again
actnup
Thank you all three for your help. I am going through the Thomas Register and surplusmotors.com websites a little at a time and I am sending emails for more information from potential suppliers. I will let you know how this turns out.
Thanks again.
I have an application where I need a 24VDC motor that is undamaged by voltages from 20 to 30 VDC and will sustain 185°F ambient. It also has to fit my current mounting provisions of 3.125in diameter, 4.88in body length. The motor I have now is rated 100oz.in. torque, 1/4 HP, 3350 RPM @ no load...
I have been passing on the information you have all given and hoefully they will let me know what in the end correctes the problem. I have been told the electrical contractor claims all the wiring is to code and the panel manufacturer claims there control panel is correct so it appears it will...
Thank you both for your help on this. I am passing on the questions to the field to get some answers. I have also asked them to check all the control wiring on the conduit for different voltages. I will post the information I get back so we can all know how it turns out.
Thanks again for your...
Thanks peebee for your reply. I am passing info I have received from sales reps in the field which are doing the best they can. The 120VAC supply is a separate source that picks up an interposing relay in the actuator for remote control. They are reading the 45VAC across the L and N without...
Do to a combination of problems in the field I have as much as 45 volts induced across a 120VAC control circuit. The power wiring (480VAC) is run in the same conduit along with several control loops and even water has been found in part of the underground conduit, but rather than correcting the...
I have a 480V, 3Ph, 60Hz motor starter control box. I have a secondary surge arrestor (650V Phase-to-Ground maximum) at the incoming terminals to the control box. It is installed in a plant that has had some power surge problems with their supply power to the plant and...
There is plenty of help here. Everyone is just thinking about which answer to give. I have had a question in another forum for weeks. So I am convinced it must be a pretty good one if everyone is still thinking about it.<br>Sorry I don't have an answer for you, I...
