View Full Version : Elau C400

June 3rd, 2007, 04:09 AM
Has anyone here worked with elau C400 controlling Elau servomotors using Elau MC-4 on profibus?

We have a new filling machine from bosch which has 12 Elau servomotors controlled by elau C400.

I have worked extensively with allen bradley PLCs on controlNet and Ethernet but both Elau and profibus are new for me.

What is the basic difference in the new system to the previous ones I was working on? Where can I get the software to program the Elau C400?

June 6th, 2007, 10:41 AM
The programming software for the C400 is called EPAS-4 and you need to buy it from ELAU or maybe Bosch can supply it to you.

June 7th, 2007, 01:20 AM
thanx MD7777. Do u have any experience on C-400?

July 29th, 2010, 11:37 AM
Good Day
We have a servodrive C-400, I have gotten EPAS-4, but I have not the manual. Does anybody know where find this manual?

Thanks in advance

July 29th, 2010, 03:30 PM
The documentation for the C400, the MC4, or EPAS-4? Documentation for the hardware is shipped with the hardware. If you have lost it you can call Elau and ask for a new CD. It is several huge PDF files, and I have not been able to find it online.

EPAS-4 is IEC 61131-3 compatible meaning it has all of the same PLC languages, LAD, FBD, STL, etc so the programming is very familiar. The environment itself takes some getting used to but once you are it is a very nice system. If you have any specific questions feel free to ask.

August 6th, 2010, 10:34 AM
Thanks for answer me

I am to confuse, in other forum I read that with EPAS-4 software I could to programming servodrives C400, but I have read that this software is for PLC.

Does anybody know with Software can I connect to servodrive?

August 24th, 2010, 08:45 PM
The C400 is a PLC AND Motion controller. You do not need separate software to program the servo drives. EPAS-4 is used for the programming of the single project that is the PLC and configuration / programming of the servo drives.

August 25th, 2010, 12:40 AM
I wish to buy EPAS-4 software with latest version (V24 SP3). But I'm not sure if I have to service controller with version 22. Do I have to buy EPAS-4 V22 too ? Or already included in V24

August 9th, 2011, 09:22 PM
is c400 capable of communicating in allen bradley controllogix 5000?


August 9th, 2011, 09:24 PM
is c400 capable of communicating in allen bradley controllogix 5000?

I have successfully used Modbus TCP/IP with the C400. It also can easily communicate over Profibus, DeviceNet, and pretty much any Ethernet protocol (if you really want it to. You may have to implement it yourself with Ethernet read/writes, but most have libraries available)

November 23rd, 2011, 08:55 PM
Dear Rexythe1,

If you want information about EPAS4 or programming ELAU C400 drives, contact me.

Yours truly,

elsawy zedan
December 2nd, 2011, 10:48 AM
we have anew filling machine with two servo motor controlled by elau c400

December 7th, 2011, 08:28 PM
Dear Elsawy Zedan,

How can I help you regarding your new filling machine with two servo motors controlled by elau c400?


elsawy zedan
December 8th, 2011, 03:57 PM
dear ali i want to know how can i deal with the software of elau c400

December 13th, 2011, 06:48 AM
You need ELAU software EPAS4 version 22, but if your program is using version 24, then you need version 24 to log on.
This is required if you want to modify the program.

But if you want to troubleshoot, then you need PacDrive Diagnostic software, which is available free from ELAU site, and is very helpful in troubleshooting.
Download PacDrive Diagnostic, V2.1 is latest, and run it, it is very simple and self explanatory. Yet if you need any help, contact me. If you have any problem getting the software, give me your email address and I will email the software.
If you can download and use the program, send me the diagnostic file with extension .pdi and I will help you if necessary.

January 1st, 2013, 02:44 PM
Dear all

i need the soft ware for PAC Drive C400, i can connect with it by Ethernet
only i need the software

Is the software is (Real-time operating system_VxWorks)?

January 3rd, 2013, 01:13 PM
The programming software for the C400 is called EPAS-4. It is needed if you want to view / modify / or download the actual program running in your machine. It can be purchased by contacting a Schneider Electric distributor (Elau was integrated into SE a few years back).

If you only need diagnostic information from the machine, there is a free software called PacDrive Diagnostics (as another user posted information about in this thread). You can download it at this link:


January 6th, 2013, 05:08 AM
E-PAS-4 software


February 6th, 2013, 05:38 AM
I am using ELAU MC-4 and MAx-4 controller for one of my machine. But, machine stop and showed error of 502 using PacDriver Diagnostics. From Diagnosis Messages it shows:
502 loop not closed. The SERCOS loop is not closed.
Question: how can I make the loop closed?

August 6th, 2013, 05:15 AM
dear all,
how can i change direction of sm-motors in epas-4?
please help .

November 22nd, 2017, 06:03 PM
I have pacdrive mc-4 11/10/400.
My input voltage is 400v stable but the mc-4 continually stopping because of pack19 - under-voltage.
What is the undervoltage setting mc-4 ? How can i make this machine running? Please somebody hrlp

November 22nd, 2017, 06:05 PM
I have pacdrive mc-4 11/10/400.
My input voltage is 400v stable but the mc-4 continually stopping because of pack109 under-voltage signal
What is the undervoltage setting mc-4 ? How can i make this machine running? Please somebody help