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When To Upgrade 2

Posted on 9, August 2017

in Category Blog, Indramat Tips, Rexroth Service

After having been in this business for longer than I care to think about, I find that upgrading is probably the most misunderstood and poorly approached action that people take with their machinery. People who will spend months analyzing the purchase of new equipment will launch into the upgrade of an existing piece of equipment at the drop of a hat. There are outside drivers of this as well. Sales people, by their nature, want to sell things. Misdiagnosed problems with equipment can make it seem as if an upgrade is the easiest way to get a problem off your [&hellip

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Get to Know the Indramat MKD Series Servomotors 0

Posted on 24, July 2017

in Category Blog, Rexroth Service

Indramat MKD servomotor

The Indramat MKD series of servomotors is a basic workhorse of a motor from Rexroth. Click the link to see all the (many, many) different codes in this series. Why so many? First, it’s available in five different rotor diameters: 025 041 071 090 112 Next, it has several other options. The series comes with and without keyways — special grooves designed to accommodate a key — which ensure that the two parts are lined up correctly. It also comes with and without holding brakes. Holding brakes engage when the electricity is cut off, safely keeping the load in place [&hellip

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The Dirty Truth about Overheating Servos 0

Posted on 31, March 2017

in Category Blog, Rexroth Service

Heat failure is one of the biggest problems for motion control technology, especially as we move into warmer temperatures. What causes heat failure? Well, obviously, heat. Ambient temperatures get higher in spring and summer, of course, but we don’t always notice it. If it’s a gradual increase, we humans can gradually adjust. Servomotors and drives can’t. An open cabinet in a room that’s getting steadily hotter is asking for trouble. Even in a controlled environment such as an air-conditioned cabinet, your servos may need a little more juice for their A/C. That’s not the only issue, though. You may be [&hellip

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Right-sizing Indramat and Rexroth Equipment 0

Posted on 27, March 2017

in Category Blog, Rexroth Service

If you’re burning out your Rexroth electric motion control repeatedly, there’s a bigger problem. “Repeatedly ” here means that when a component burns out, everyone remembers the last time it happened. Rexroth drives often go for decades without any problems at all. Burnouts could reflect a number of problems, from poor atmospheric conditions to dirty or fluctuating power supplies. One of the biggest sources of habitual burnouts, however, is using the wrong equipment for the job. There are a lot of variables to consider when you’re talking about right-sizing your equipment, from torque output to power requirements to personality modules. If [&hellip

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Legacy Parts 0

Posted on 13, June 2016

in Category Blog, Rexroth Service

Legacy. Mature. Obsolete. Secondary. Classic. These are words you’re likely to hear when you have a problem with your machinery or a decision to make about your machinery. They may sound good, but they’re generally euphemisms for “old.” Do you want to stick with your old machine, you’re being asked, or get a new one? Legacy machinery is old machinery, typically machinery that is no longer made. There is an implication that there’s still value in the machinery — a legacy, after all, is what you leave to the future — but there is usually very reasonable concern about the [&hellip

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2AD Motor Makeover 0

Posted on 6, May 2016

in Category Blog, Rexroth Service

This 2ad servo motor has seen better days — in fact, we might be tempted to call this a sad motor instead of a 2ad motor. This is definitely the “before” picture. But Rexroth servo motors work hard, and this one has been in service for many years. It’s understandable that there should be some wear and tear. Here’s the same motor. This is an “after” picture. These before and after pictures tell us a couple of things. First, they tell us very clearly that a Rexroth electric servo motor is not disposable. If it stops working, don’t call the [&hellip

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Rexroth Error Code F219 0

Posted on 4, April 2016

in Category Blog, Rexroth Service

Error Code F219 is deceptively simple: your motor, it’s telling you, is overheating. When it reaches too high a temperature, it will stop. Just restarting it won’t fix the problem. You have to actually fix the problem before you reset and restart. So why is your motor overheating? If your Rexroth legacy servo motor has been humming along happily (as far as you can tell) since Dwayne’s granddad installed it in the 1970s, it’s time to consider how the environment it’s in has changed since that time. This might seem like a stumper, but here are a few things we’ve [&hellip

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The Company-Wide Repair Agreement 0

Posted on 24, June 2015

in Category Blog, Rexroth Service

It seems smart at the time. Your company enters into a company-wide repair agreement (let’s call it CWRA) with a vendor that works with automation. All automation, to hear them tell it, but then your legacy Rexroth machinery needs some support. The big automation company can’t repair the legacy components. They can’t get OEM parts, because Rexroth doesn’t sell parts. Ever. They can’t get the information they need, either, and they have never seen this kind of part before. We know what happens next. You’ve already wasted a lot of time trying to get your machinery working under the CWRA, [&hellip

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Third Party Repair Report 0

Posted on 13, March 2015

in Category Blog, Rexroth Service

When we send a motor in for Rexroth factory repair, we receive a report on the condition of the motor. Here’s one we received recently: Found: motor was repaired incorrectly by third party repair house. An attempt was made by the repair house to clean and bake oil out of the motor, but it was unsuccessful. Both oil and oil residue are still evident and present in motor. Power connector area is fully contaminated with oil. Stator has oil residue and rotor is soaked and discolored from oil. Brake gap is set too small due to improper parts, discs are [&hellip

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Is Power Quality Your Problem? 0

Posted on 29, October 2014

in Category Blog, Rexroth Service

Indramat motion control is very good — we meet a lot of servos which have been in service for 30 years before they have a problem. But we also see cases in which Indramat components fail — or seem to fail — repeatedly. Often the problem is “dirty” power. We’ve heard of cases in which poor wiring or poorly grounded setups were the culprit, and we’ve seen plenty of examples where the voltage was just wrong. Check the 24vdc power and the ripple. Servos are designed to check on parameters all the time, and to respond, often by stopping, when conditions [&hellip

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