![]() (*) Another way of depicting the ON, -ON, and OFF, -OFF is to show it as Phase A as the X-Coordinate, and Phase B as a Y-Coordinate: Recall in circuits, “negative” simply means current is flowing in an opposite direction. Beyond the standard ratings, you’ll end up with a burnt motor.įinally, what exactly is Amps/Phase, Amps RMS and Amps Peak? Earlier we mentioned the switching sequence in order to make a motor step the sequence for both A and B is shown below. Since this is based on the windings, we choose I, current, to be a value such that I2 R power does not exceed standard wattage ratings per motor size. Furthermore, with each change, current will flow in the motor (rise) then flow out (deplete) due to the fact that the coils act like storage for power.Ĭurrent ratings stem from overall I2R power and the internal step motor coils have a resistance rating. These switches will turn on and off in a sequence in order to get the motor to step. You can imagine it as two switches for the two phases of a bipolar step motor. Drivers will control when and how much current each motor phase will receive. Let’s first understand why the current rating is important when using current-controlled systems. This might seem simple enough, but then, step motor and driver manufacturers will throw in a term like “Amps Peak” current into the mix and cause some confusion. In the case of step motors, they are almost always labeled with an Amps/Phase rating, also known as Amps RMS or average current. When one specification is so essential to the motor’s performance, it is imperative that all terminology that is associated with it is also understood. However, getting to know the terminology that is associated with your specific application is of the utmost importance.įor engineers who use step motors in a current-controlled method, which is the case for almost all bipolar drivers, amperage is a key component to take into consideration. With so much technical jargon floating around, it’s hard to stay up to date with everything. With the step out of the way, it was 2 bolts to disconnect the drive motor, and 2 bolts to take the arm off.Step motor terminology can be confusing for all engineers both at the novice and the advanced level. I used a dead blow hammer to tap it lose. After loosening the screws that held it on, it was still stuck on. As can be seen below, the step sits in a groove on the arm with sand in it. The steps are right behind the front tire and as a result, are constantly being bombarded with sand and road grime. I could easily see the broken gear, but I needed to take the side step arm off to get to the shaft. Regardless, the shaft end broke into pieces and needed to be replaced. You can see there is some grit in the photos, but most of the dirt from sticking to the spray on grease that I use. It’s exposed to air and had the potential to get rocks and debris in it, but I’m pretty good about cleaning the extension arms. The part that broke is the shaft that goes through the steps that the motor uses to lift and lower the steps. You can find AMP Research contact info here: Broken Gear After emailing AMP Research, the sent me the broken gear replacement within a couple of days. Fortunately, the AMP Research Powerstep comes with a 5-year warranty. I’ve seen other trucks that had their steps stuck down and it looks like crap. The AMP Research Powerstep had just chewed through a gear and my driver side step was permanently down.ĪMP Research Powersteps are not cheap, and I always had worried a little about this happening. When I got out, I found chunks of metal on the ground. I was working on my truck and when I closed my door, I heard a crunching noise and the step motor still running. I’ve had them for a little over 2 years and they have worked flawlessly…until recently. One of the first mods I did on my Toyota Tundra was to get AMP Research Powersteps. AMP Research Powerstep Warranty Long Term ReviewĪMP Research Powerstep Long Term Review and Warranty.Toyota 4Runner Oil Change QUICK REFERENCE.Rear differential fluid change – 2008 Toyota Tundra.RV Air Conditioner Not Blowing Cold Fix. ![]() Fuel Station Nozzle Leak Repair for Toy Haulers and RVs.NGK Iridium Spark Plugs Ducati Monster 696.WPS Featherweight Lithium Battery Review – KTM 990 SuperDuke.Aluminum Throttle Tube With Bearing-KTM 450.Pro Taper Handlebars vs Renthal Fat Bars – KTM 450.GPI Racing Radiator review – 2014 KTM 250 SX-F.KTM 250 SX-F Spark Plug Replacement NGK LMAR9AI-8.American Outlaw Wheels Review CRACKED WHEEL.Cat Diesel Power Trucker Hat – Smokey and the Bandit.Sag Setting Tool For Dirt Bike Suspension.Rhino Ramps Vehicle Ramps – Truck Ramps.Dirt Bike tire changing tools MUST HAVES.Best Way to Restore Exterior Black Plastic Trim.Dirt bike tire change – Step by step guide.
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