Danfoss Error 1027 Guide

Send a control word bit 07 (Reset trip) via explicit message or from the PLC. Example for Profibus: Control word = 0x0080.

A simple reset often clears temporary errors.

Configure a digital input (e.g., Terminal 18) with Parameter 5-10 = [1] Reset. A momentary closure clears the alarm.

For Error 1027 to occur, the drive must be expecting a master. If the station address (Parameter 8-31) or baud rate (Parameter 8-30) was changed or mismatched after a clone, the drive never joins the network. danfoss error 1027

If production cannot stop and braking is not critical:

⚠️ This disables dynamic braking. Long overrun or high inertia loads will cause Error 7 (Overvoltage).

For qualified technicians only – high energy stored in capacitors. Send a control word bit 07 (Reset trip)

Using a multimeter in diode mode (or resistance low-ohms):

| Measurement (drive disconnected from mains, brake resistor disconnected) | Healthy Reading | Shorted IGBT Reading | |--------------------------------------------------------------------------|----------------|----------------------| | Between BR+ and BR- (some drives) or DC+ and BR terminal | Diode drop 0.3–0.8V one way, OL reverse | 0.0V or very low both ways | | Between BR- and DC- (common config) | Same as above | Short both ways |

If shorted both directions → IGBT failed. For Error 1027 to occur, the drive must

Locate the option card (left side of the control card on VLT units). Interpret LEDs:

| LED State | Meaning | |-----------|---------| | Steady green | Normal data exchange | | Flashing green | No configuration / waiting for master | | Red flashing | Timeout or bus error | | Steady red | Option card failure or hardware fault | | Off | No power or card not detected |

For Profinet (MCA 101): Flashing green on BF (Bus Fault) indicates Error 1027.

For EtherNet/IP (MCA 104): Red “Mod” LED means network timeout.

If the error returns immediately on power‑up or after a reset, the internal hardware is likely damaged. Common failures inside the drive include:

Comments

4 responses to “Waves Horizon Bundle Review 2024”

  1. Erik Hedin Avatar
    Erik Hedin

    Thanks for a great review Ilpo. It was interesting for me to see what you found useful in the Horizon bundle.

    I bought some Waves plugins and liked them. But got upset by the WUP when I found out about it. I totally buy your argument about that the workers at Waves need to get payed. I think Waves undercommunicate what the WUP is.
    I do love that Waves are supporting their old plugins and keep develop them! As a comparison I bought a plug-in from another company and a few months later that company disappeared from internet and newer came back!
    So Waves are definitely a reliable partner if you like to build a long term professional buissenes.

    Reply
    1. Ilpo Kärkkäinen Avatar
      Ilpo Kärkkäinen

      Appreciate the thoughtful comment Erik. I agree they could do a better job at communicating what WUP is. I edited the article to include that thought. Thanks!

      Reply
  2. David G Brown Avatar
    David G Brown

    I appreciate your points as well Ilpo about maintaining stability in the company and paying employees fairly. I would prefer a different approach however. I have no issue paying an upgrade fee for new or improved features, or for Waves having to adapt their plugins to work in a new OS.
    I don’t like paying an annual fee for no apparent changes or improvements however. I bought a bunch of Waves plugins on sale in 2020 and, when the 1 year purchase date occurred all these plugins stopped working in my DAW. I felt like I was being held hostage to have to renew licenses for no real benefit. Had I known this I probably wouldn’t have bought them.
    I know there are lots of products that provide user access on a monthly or annual leasing arrangement. I have paid for upgrades for DAW improvements, added features in other products etc. on numerous occasions but I don’t want to pay an annual licensing fee for a product that I have already bought unless there is substantive improvement.

    Reply
    1. Ilpo Kärkkäinen Avatar
      Ilpo Kärkkäinen

      Thanks for sharing your experience David. I completely agree that is not how it should be.

      You are aware that the WUP is not an annual licensing fee though, right? Something has obviously gone wrong for you there, because that is not how it’s supposed to work.

      In which case you should contact Waves support.

      You’re not forced to upgrade ever, unless your system specs have changed so that the version you own doesn’t work with your system anymore.

      I was working quite happily with Waves V9 plugins for many years, until I decided to upgrade to V13.

      So please do get in touch with Waves support, if your system specs haven’t changed there must be something wrong there, and I’m sure they’ll help you out with that.

      Reply

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