Combivis 6 is KEB’s VFD software for drive programming. It is a powerful tool for anything to do with your KEB drive. It is used not only to program/configure your VFD, but also to find documentation, and troubleshoot machine issues with its 16-channel scope function.
While some companies charge for their VFD programming software, KEB does not. Combivis 6 is available to download for free at https://www.keb.de/drives/tools/combivis-6.
This post is a basic overview of some of the powerful Combivis VFD software features that help the development and support of KEB drives.
KEB Device Scan:
When troubleshooting a machine, the last thing you want is another problem to arise. For example, your PC will not communicate with your automation equipment. Instead of manually tweaking baudrates and COM ports to scan, Combivis 6 will scan a full range in search of a KEB device automatically. The KEB Device Scan function can be easily activated by clicking the “Scan for KEB devices” button on the start page of the software.
Figure 1: Combivis 6 home menu
You can then select Serial, TCP/IP ports, or both to scan over a range of baudrates/addresses for KEB devices.
To replace a VFD in the field, you want to make sure the new unit has the correct program in it. The best way to ensure this is to take an upload from the existing VFD and download it into the new one. This can be done using KEB’s USB to VFD converter (part number 0058060-0040) which can handle multiple forms of communication (Serial, HSP5, etc..) and the Combivis 6 software.
Throughout the industry, there is some confusion on the terms upload and download when they are referring to VFD programs. Luckily, in Combivis 6, if you hover your mouse over an upload or download button, it spells out the action it will perform:
Once your parameter list is uploaded from your VFD, you can save it to download into another or several other VFDs.
Once you register your Combivis VFD software for free, you will have hundreds of user manuals and FAQ documents at your fingertips. A user can manage the documents and save them locally. Also, it is possible to auto-update the manuals so you have are using the latest revision.
The FAQ documents contain parameter lists that have been put together by KEB Engineers to assist users with startups of advanced drive functions. Take for example, KEB’s powerful sensorless closed loop (SCL) functionality. SCL allows you to run a motor with closed loop performance speed and torque control without the use of an encoder. This functionality requires you to input motor and control parameters which can be a daunting task if you are unfamiliar with VFD programming. The FAQ worklist available in Combivis 6 allows you to import a parameter list complete with comments to enter into your KEB VFD:
Along with FAQ documentation, you can right click on any drive parameter and look it up in the application manual and take you directly to the PDF page.
Wizards and Scope:
Combivis 6 has start-up wizards that allow you to have a motor spinning in a matter of minutes with no VFD programming knowledge required. When you connect to a KEB VFD, a wizards tab will populate which allows you to step through basic speed control settings, motor data, encoder setup, and fieldbus communication setup.
Setting up your EtherCAT process data is simply a drag-and-drop task in Combivis 6 VFD software. The process data wizard handles all of the addressing and once the user has picked all of the transmit and receive PDOs, they can export an XML file from Combivis 6 to load into the PLC.
One of the many (and possibly the most useful) tools within Combivis 6 is the scope. The scope can monitor and record up to 16-channels in real time. With the Combivis 6 scope, you are able to monitor the drive and system behavior during machine setup or during operation.
Some common parameters to monitor are: encoder speed, motor phase current, DC bus voltage, actual position, etc…
Figure 8: Combivis Scope traces
Combivis 6 VFD software is your one stop resource for programming, startup, and maintaining your drive. It is available to download and register for free from https://www.keb.de/drives/tools/combivis-6. Feel free to contact one of engineers to learn more.
Interested in KEB’s automation technology? Contact a KEB engineer today to discuss your application.