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Electric motor and speed control circuit diagram

I am trying to build a R C model aircraft with an electric motor with speed control

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Electric motor single phase 3 speed 12.5mfd. 500v. working capacitor.

How do I wire them up?

Posted on Jun 17, 2011

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Start Here, ( RC motor speed control) if not helpful post back with more details.

Posted on Sep 27, 2008


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Posted on Jan 02, 2017

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Where are the fuses for the blower motor on a 2005 Pontiac Bonneville

Doesn't work on any speed ? high - low . Does your's have manual or automatic climate control ?
Don't think a fuse problem , blower motor control processor more then likely .
Blower Motor Control Processor
The blower motor control processor is an interface between the HVAC control module and the blower motor. The blower motor speed control, battery positive voltage, and ground circuits enable the control processor to operate. The HVAC control module provides a pulse width modulation (PWM) signal to the control processor in order to command the blower motor speed. The processor supplies 12 volts to the blower motor through the blower motor voltage supply circuit. The control processor uses the blower motor ground as a low side control to adjust the blower motor speed.
Look here for fuse location an wiring diagram's Enter vehicle info. year , make , model an engine size. Under system click on HVAC , subsystem HVAC controls . click the search button then click on the 5th blue link . This show's fuse location an wiring diagram for the blower electrical circuit . If you don't know where the rear fuse box is ,it's under the rear seat . It would be easier to just check under the passanger side dash at the blower motor control processor at the orange wire .
Do you know how to test electrical circuits with a voltmeter ?

GMC Yukon HVAC Blower Motor Won Turn On

Nov 26, 2017 | Pontiac Bonneville Cars & Trucks

1 Answer

Replaced blower and resister on 2001 Dodge Dakota but no air flow through vents Why?

Is there B+ voltage to the componets ? Have a good ground circuit ? Do you know how to do automotive electrical testing ? How to read an use a wiring diagram to find testing points in a electrical circuit ? Test an don't guess when dealing with automotive electrical circuits .
Free wiring diagrams here Enter vehicle info. year , make , model and engine size . Under system click on HVAC .Then under subsystem click HVAC controls . Click the search button then the blue link. Fuse #13 40 amp powers the ignition switch ,which when in the run position will supply B+ voltage to the blower motor ! Do you have battery voltage there ? From there it goes to the resistor for low , med 1 an med 2 . For high speed it goes directly to the HVAC control panel through the switch to ground .
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Electric Testing Techniques You Need to Know

Jul 22, 2017 | Dodge Cars & Trucks

1 Answer

I have a 2007 HHR, my temp gauge stops working and the same time the a/c stops blowing cold air...I called myself checking fuses and a relay, can you help?

You mean the blower motor stops blowing air , the A/C compressor is still engaged ? The temp gauge shouldn't have anything to do with the blower motor .But stranger things have happened on these systems when they are controlled by a electronic module (BCM )
Circuit/System Description
The instrument panel cluster (IPC) displays the engine coolant temperature as determined by the engine control module (ECM). The ECM sends the temperature data via high speed GMLAN serial data to the body control module (BCM). The BCM then sends the information via low speed GMLAN to the IPC in order to display the engine temperature.
The BCM applies voltage to the blower motor through the HVAC relay. The resistors and the blower motor are in a series circuit. The following list represents the number of resistors in series with the blower motor per particular speed request:
• Low speed--4 resistors
• Medium 1 speed--3 resistors
• Medium 2 speed--2 resistors
When the operator requests High speed, the HVAC control assembly applies ground directly to the blower motor through the high blower motor control circuit.
Do you know anything about automotive serial data communications ? GMLAN Is general motors version of C.A.N controller area network .

How to Diagnose Controller Area Network CAN

Do you know anything about diagnosing automotive electronics ? Using a digital volt ohm meter ? Using wiring diagrams to pin point locations in a electrical circuit for testing ? Do you know what a factory componet location diagram is ? It takes more then looking at fuse's an relays , to see if current is flowing in a electrical circuit .

Electric Testing Techniques You Need to Know

ECM Inputs and Outputs Diagnosis Free wiring diagrams ! Enter vehicle info. Year , make , model and engine size ! Under system click on HVAC , under subsystem HVAC Controls . Then click the search button , then click the first blue link . This is the blower motor control diagram . Do you know how to read a wiring diagram ?

Apr 30, 2017 | Cars & Trucks

1 Answer

Table fan winding&connection daigram

  • I have a Bionaire brand table electric fan.
    • It has a 3 speed fan motor.
    • The electric motor is a BM-122 Decomin brand 3 speed motor.
      • There are 6 wires:
        • Red wire.
        • Black wire.
        • White wire.
        • Yellow wire.
        • Gray wire.
        • Blue wire.
          • The motor has a 4mu 250volt capacitor.
  • This fan has an oscillating grill with independent sync motor, and timer circuit.
  • Something was wrong with the solid state circuitry (everything worked but the motor!), but a quick test of the motor indicated it does work.
  • The motor uses a start and run capacitor.
  • I decided to change controls to a simple mechanical switch and fore go for now anything beyond 3 speeds.
  • The printed circuit board shows the following connections:
    • Black wire
    • Blue wire
    • Yellow wire
      • Are respective for the:
        • High fan motor speed
        • Medium fan motor speed
        • Low fan motor speed
  • I think the gray wire goes out to the oscillator motor.
    • The Red wire is marked as Line, for the power source.
  • All wires are in continuity with each other EXCEPT RED is not with any other wire. How to Verify Fan Motor Wiring Connections
    • Checking the Motor and Capacitor Connections
    • Double check your connections using the fan wiring diagrams.
    • You should see that there is a separate motor winding for high speed.
      • The concern is that there is a capacitor for the motor.
      • So I'm thinking that the motor may have to start with the slower speeds first.
      • and not start in the high speed because the motor or capacitor has not been designed for that type of operation.

Sep 29, 2016 | Dryers

1 Answer

I have an 02 Aztek. About a week ago the gas gauge started reading either full or empty nothing inbetween. Then the the blower motor would stop and start when the the dial control was on. Now the...

Doing electrical circuit testing of the thing's not working would be the way to find the problems . Not looking for magical fixes on here . Without testing anything said on here would be guesses . Are prepaired to replace a bunch of parts till it's fixed . Do you know how to do automotive electrical testing using a wiring diagram and a DVOM - digital volt ohm meter ?

the engine about 30 - 90 seconds and it will start and go another 3-15 miles and die again. Do fuel pump electrical circuit testing an fuel pressure an flow testing .
Electric Testing Techniques You Need to Know

Free wiring diagrams here Enter vehicle info. year , make , model . under system click on HVAC subsystem HVAC controls . Click the search button then the blue link's .
Does your vehicle have manual or automatic climate control ? Automatic has a blower motor control proccessor manual has resistor pack. an a relay for high speed. Does any speed work ?
Blower Motor Problems Auto Repair Help
Testing Electric Fuel Pump Problems with Voltage Drop Test

This is why repair shops charge what they do . Takes years of learning (training ) to get good at testing electrical systems. Plus the amount of tool's required. $$$$$$$$
The fuel gauge or the sending unit could be the problem or the insturment cluster . Testing ,hooking up a scan tool that can read codes in the insturment cluster , that can read codes in all the modules on the vehicle.

Sep 13, 2017 | 2002 Pontiac Aztek

1 Answer

Hi,I have a travel trailer 37ft. Problem with my ac, the fan starts good but my compressor does not kick on. My next door neighbour says it's the compressor that is done. Could you help me?

see this causes and fix it. God bless you
Motor Trouble Cause Diagnostic Procedure Repair Procedure Electrical Power is Off Check that all service switches for the equipment are in the "on" position.
Check for voltage at the pump motor or pump controls. If no voltage is found, check for voltage at the electric panel.
If power is on to the building, check fuse or circuit breaker serving the electric motor that won't run.
Check for local reset button on the motor (popped out = off )
Check for other power reset or power off buttons such as an access door compartment safety switch that turns off power to the equipment (found on A/C blower compartment doors)
Turn on "off" switches.
Replace bad fuse. Reset circuit breaker; if necessary replace bad circuit breaker.
Let hot electric motor cool down, then push in its reset button.
Be sure all safety interlock switches such as on compartment doors are depressed and that the doors are securely shut. Replace a bad safety switch.
FAN AUTO ON Thermostat Switch
Blown fuse, tripped breaker Replace fuse or breaker - does the pump run and keep running normally? Be sure proper breaker or fuse size in ampacity is installed - ELECTRIC PANEL INSPECTION Low voltage to the motor Check with VOM at the pressure control switch or at the motor wiring Be sure the proper size of wire is used for the ampacity and length of circuit; Test for low voltage to the building. Loose, improper, or broken motor wire Check wiring against the motor installation manual diagram, check all connections for tightness, shorts, burns, damage Rewire or repair or replace wWhen a sealed compressor motor has "burned out" this means that the internal wiring of the motor has become irreparably damaged: the compressor motor windings may be burned and shorted together or shorted to the steel shell of the motor, or the windings may have burned and simply become "open" or disconnected. If the motor has burned out in either of these ways it needs to be replaced.

Oct 08, 2012 | Dometic Rooftop RV Air Conditioner

1 Answer

My motor has 5 speeds in foward and 3 in revers when i put it in foward it goes backwards

Look at following diagrams to help sort out electric motor wiring.
The wiring diagram should show on side of motor.
Here is basic motor wiring:
Test each lead as shown in following image. In the case of 240Volt, the 2nd wire is not Neutral, but testing is same.
If you have 2 speed motor, then you will have switch or timer controlling the speed:

Oct 05, 2012 | MotorGuide STANDARD MOTOR REPLACEMENT...

1 Answer

With new charged batteries, scooter shuts down after about 2 miles, after waiting a few minutes it will run normal. The indicator does not show a low battery.

Hi. I have had this fault on a few machines, but its not always the same problem.
When scooter motors have done a lot of work, they develope a build up of carbon dust from the brushes. This dust can cause a short or the commutator might be slightly out of round, causing the brushes to vibrate or bounce. The electronic controller is always monitoring the speed of the armature, and if this signal is interupted, the the controller can shut down the motor. Test the motor with a multi-meter on OHM's, from one of the brushes to the frame of the motor. If there is no circuit, then there is no build up of carbon. If there is a circuit, then you might need to overhaul the motor.

Also check the battery lead connectors, and the motor lead connectors. I have had to remove many of these for bad connections. Really bad connections will have burnt or melted the plastic housings.
Good luck. Neil.

May 04, 2010 | Electric Mobility Mobility Electric Power...

2 Answers

Blend door for front temp control is stuck in the 'cold' position this winter. Is there a way to manually move and fix the door to get some heat?

you have to replace the blend (heat/cold) door motor, you can try to remove motor and turn door and try to jam something in door handle slot ,that the part that the motor turns,hope this helps.

Dec 26, 2009 | 2001 Ford Windstar

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