88$ JMC IHSV57 180W DC servo motor

Low-cost servos arrived in the DIY CNC field only in recent years. Since its release, the JMC IHSV57 integrated 180w servo motor has made quite a stir. When deciding to build my next generation of diy cnc router I wanted to use servos to enable quicker rapids and potentially a more accurate cnc machine.

Unpacking the JMC IHSV57

The JMC servos come very well packed in a sturdy box with ample foam packaging. The motors themselves feel heavy and well built.

JMC IHSV57 180w integrated servo stepper packaging

For the electrical connections they have used “phoenix” style plug and play connectors for the power, control and communication signals. The power one has screw terminals to prevent it to come loose during installation or use.

JMC IHSV57 180w integrated servo stepper packaging connector

The mechanical construction feels sturdy accurate and professional.

JMC IHSV57 180w integrated servo stepper packaging

How to connect JMC IHSV57 180W servo

For connecting the JMC IHSV57 servo motor I used the connection diagram below:

JMC IHSV57 180w DC servo how to connect

You can find the connection diagram here *I do not use the ELS 4 controller but GRBRLHAL2k*

In order to make the overall connector neater and easier to manage I used CAT5 shielded flexible ethernet cable to connect the servo / stepper signals to my GRBRLHAL2k cnc controller. But for most cnc controllers the connection will be the same. As it is just a simple step-dir connection which is equivalent stepper motor driver connection.

JMC IHSV 57 JMC servo motor 180W

This made the connection very easy and clean. The twisted pairs and double shielding of the CAT5 ethernet cable helps enormously against EMI and EMC issues. I really recommend using it. You can find the 8 wire to ethernet adapter from Aliexpress here

JMC servo motor tuning

Now we start to get into the nitty gritty of things. Servo motor tuning is a quite complicated subject. Therefor most manufacturers of servo controllers such as Delta implement well-designed autotuning algorithms to make it easy for the user to get going. What you tend to see with more budget controllers is that this auto tuning is not very advanced.

JMC AC servo tuning software IHSV57 JMC servo

Where you would get 80-90% there while using “proper” autotuning algorithm from a more professional but also much more expensive servo controller, with the JMC servo control software it is a bit more work.

Normally I would use resources such as the National Instruments – Understanding servo tuning guidelines.

But for the JMC servo tuning I found the following resources the best to get started on tuning your IHSV57 servo:

This first video gets you going with the initial autotuning.

The second video got gave me a lot extra background information and allowed me to tune my IHSV57 servo motors well.

Frequently asked questions – FAQ

These are the most frequently asked questions related to the JMC IHSV57 180W DC servo motor.

How to tune IHSV57 servo

What helped me the most is the videos posted in this article by JB Worx Studio.

Where can I find the JMC IHSV57 Manual

The user manual of the IHSV57 can be found here

Where can I find the JMC servo control software?

The control software for the IHSV57 servo series can be found here

Should I get a servo motor or stepper motor for my DIY cnc

This is not an easy question. There are many pro and cons when making this choice. In this article we talk about this subject in detail.

How to fix JMC servo control connection issues

Ugreen USB to RS232 COM Port Serial PDA 9 DB9 Pin Cable Adapter Prolific pl2303

Initially I had some serious problems getting connected to the JMC IHSV57 servo motor through the JMC servo controller software. When I purchased a premium RS232 UGREEN cable it fixed my issue.

Conclusion

Overall I’m very happy about choosing the JMC IHSV57 180W DC servo motor for my next project. The tuning took a bit of figuring out but after following the videos tutorials posted in this article I got a quick and responsive cnc router. Especially at the low price of 88$ per servo. Get it on Aliexpress now as stock is running out quickly.

JMC IHSV57
20220527 234244

Low-cost servos arrived in the DIY CNC field only in recent years. Since its release, the JMC IHSV57 integrated 180w servo motor has made quite a stir. When deciding to build my next generation of diy cnc router I wanted to use servos to enable quicker rapids and potentially a more accurate cnc machine.

Product SKU: IHSV57

Product Brand: JMC

Product Currency: USD

Product Price: 88

Price Valid Until: 2022-09-23

Product In-Stock: InStock

Editor's Rating:
4

Pros

  • Relatively affordable
  • Good support
  • Quick and responsive dc servo motor

Cons

  • Autotuning could be better
  • Documentation could be better
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Spikee
Spikee

Hi, My name Is spikee and I'm the Author of this post.
I have been active on various cnc communities over the past few years.

On this website I share tips&tricks, reviews and intresting resources relating to diy cnc and cnc router topics.

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3 Comments

  1. Hi spikee, I am enjoying the website and your newsletter. I have also been following you on the PrintNC Discord server as well! 🙂 I was wondering if you could write an article on the purpose and need for a servo brake when using a servo on on your Z-axis. I am seriously considering using the 180w servos for my PrintNC build but I’m still not exactly sure how to incorporate/wire a servo with a brake for the z-axis. Thanks! -William-

    • Hi William,
      The primary use for the brake is to prevent the z-axis from falling down when you turn off the machine or press the e-stop.
      On my old machine, I broke plenty of tools like that. For the IHSV57 specifically, you don’t need to actuate it manually. When you enable the drive (input) on the servo the break gets released.

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