Hello,

Our company's electric vehicle is using a MD4-10 display/controller with the IQAN software. Yesterday, the MD4-10 suddenly started to show lines of color on it and turned white. After a reboot, the screen seems to open but only showing a white screen and we are not able to communicate with it through an IQAN ethernet connexion.

We are trying to figure out what exactly happen so we do not repeat this mistake on the spare display that we have. 
I believe something similar happen in 2015 on another post and it had to do with the supply being too low. But it was mentioned that that issue was fixed. Furthermore, we supply 12V to the Display with a 2 A fuse as well as the RTC protection circuit that is suggested in the manual. 

- Our negative connexion is connected to the negative of the 12V battery through the vehicle's chassis. However, we also supply everything including another MD4-10 the same way. Could this cause this type of issue ? Does it need to be directly connected to the negative of the 12V battery?

- Can a short circuit between the power supply and the RTC input cause a fault of the screen, or just prevent the screen from being turned off?

Thank you for your support.

Best.

Is this MC43 output configuration is correct?

Can we power a load at higher voltage than the MC43 power for output 30 to output 46?

In the IQAN MC4x/XC4x instruction book on page 67, it is recommended that sensors requiring a supply of more than 5V have their returns connected to -VREF instead of chassis ground. I understand the reason for doing this is to minimise sensor error, however, if the sensor supply is shorted to -VREF there will be a large fault current through the -VREF pin. What is the fault current handling capability of a -VREF pin? Furthermore, if this pin is not capable of handling high fault current for the time it takes for a typical thermal circuit breaker to trip, would powering the sensor from a digital output with current limiting be a preferred option?

I have been doing some research and configuring a CANopen module to send a 0-10Vdc signal to run a prop valve. I have now been told that a PMW output on the MC4x and XC4x can be programmed to output 0-10Vdc. I wanted to confirm that is correct as I have seen in the forum that you are unable to send out that signal type. 

What is the best way connect motor in full bridge mode to MC41? 

Has anyone tried to control a D1FBE01HC0NMWO (9V/2.7A spool) with a PWMOUT, if so what is the performance like? The rating for COUT is 2.5A so I will have to utilize the PWMOUT HS. I have read that COUTs allow the best performance with solenoid.

I have a project where I am trying to stream a video of my cell phone to the MD4 display.   As I want to be able to view google maps on the display for an in cab display.   

I noticed in this post that it looks like the MD4s support HTTP streaming,  

https://forum.iqan.se/communities/5/topics/295-md4-updated-list-of-tested-functional-ip-cameras

And I found this app that will do HTTP streaming via MJPEG

https://github.com/dkrivoruchko/ScreenStream

And then I get an access point connected from my Phone, PC, and MD4 display. 

The phone has an ip address of 192.168.128.10:8080, and I can view the stream on the PC, but I cannot view it on the display.  

I tried to type in "HTTP//192.168.128.10:8080" in the URL and that didn't work, and then I tried just the port of ":8080" in the URL.    

Can you confirm that the MD4s support HTTP streaming and if so what port are you using, as I can change that in the app settings if its not 8080.  And how would I configure this in IQAN

I am trying to us a PWM HS Output on an MC4x to drive a signal needed for a PWM fan.  I will get an open load when I try to drive it directly, and even with disabling the open load check it still will not work. The output just stays at 12v.   

If I add a 1k resistor from the PWM output to ground, everything works as it should.   But now the issue I have is with no power to the MC4x,  I have some leakage voltage in the range of 50ma which will draw the battery down. 

Is this a software or hardware issue that will not allow me to use this PWM output to drive this fan directly??

My work around is using a relay to make and brake the resistor to ground when the MC4x is powered.  But this is not a great solution, and would like to see if this is just a software issue that could be fixed.  

Hi 

We have a MC2 controller that works normally for some time then it stops.  It works again after power cycling it.  The led flashes in a pattern not in the instruction book.  It just flasher red very rapidly.  Any idea on what the cause can be?

Hi,

Recently I had to adjust ramp values on TOC2 system using by screwdriver.

The whole crane control system has two TOC2 modules and I succeeded to adjust the first one.

When I tried to adjust the second TOC2 module by pressing the push button, all A and B LED's start flashing but I couldn't choose the particular function by moving the control lever. It just stayed on that Auto select mode without responding to any movements. The crane moved anyway during the adjustments and at normal operation mode corresponding LED illuminated.

I connected the TOC2 to IQAN develop and ensured that "adjustable" button was enabled on output channel, and it was.

Also, something unexpectable happened after I got the program from the first TOC2 and didn't send it back nor changed anything on it. As a result, I lost the ability to adjust it by screwdriver anymore and the values were changed.

Eventually I managed to adjust correct values via IQAN develop but the mystery of manual adjusting is unsolved.

Has anyone faced this kind of problem before?

- Markus