Hello Is there a way to use a GS60 speed sensor with the MD4? I have not tried it yet but would really prefer to use a three wire sensor then an encoder. 

Say the MD4 screen is broken or cracked, would the I/O and CAN messages still work on the module, assuming no damage to the board in the enclosure?

The MD4 documentation states to use 1.5K ohm resistor on the +RTC circuit. Is the 1.5K ohm the only type that is usable, or is there a range that will work?

We have had multiple MD4 units (7 and 10 inches) no longer powering up.

Do you have any idea what could cause that?  We're using fuses to protect the units, but sometimes they still seem to fail on normal operation.

We have a customer that is experiencing graphical errors with an MD4. S/N 1535280044. Customer is complaining that the display sometimes is black, sometimes white and sometimes multicoloured lines:

Does anyone know why this could be happening? It appears to be happening sometimes at startup, but also when machine is running (randomly dropping out). Im not sure if its the hardware issue that was changed a couple of years ago on the MD4?

I have multiple MD4-7 low side output permanently latching off when it is driving a relay after a month or 2. Over the course of 2 years this seems to only be happening on the last few units I received, but not on any of the older ones. The current maximum on the output is 300ma and the relay I'm driving has a maximum inrush of 350ma for less than 1us, and it has a built in surge protection suppressor diode... I would normally say ugh I should have been more careful but I have quite a bit of units with all the same relays driving off of the same outputs without problems. has there been any component changes in the past couple months to these units? Anyone else have any thoughts on what might be happening? 

Hi there!

I've got a small problem and i had this before but it went away every time but i dont know how to fix my problem

if i start up my MD4-5 it shows our own startup screen (this is good) and then, after the startup, it shows an error message:

and it stays in this screen.

I've connected the Bat+ to 24V bat- to the ground and the RTC to the 24V with a 1.5K resistor.

is there any reason why this could happen?

Theleo De Bruyn

Hi,

I have several issue comes from a customer who run MD4/MC31 multimaster system.

They have MD4 who are not anymore able to keep the RTC.

To be sure, I took a kit apart and tested it myself. Finally, I move the MD4 alone and tried it with a very small program. Only value to show date/time/temp.

When it boot, the RTC is resetted and the temperature is OK (around 40 Celsius).

But when I update the date/time from iQanRun, the date and time appear to be OK, but the internal temp goes to -1C and give critical error.

I did a short video to show what I did and to show what's append.

https://youtu.be/npQr-87-FiY

Thanks!

There is some picture to complete:

I am using an MD4-7 screen on a test bench. 3 out of 4 starts I get either a White Screen or a black screens with some colored dots. Once I saw what seemed to be blocks of black and white.

Looks like the video driver is not starting properly. The application appear to be running since the canbus messages are being generated.

Can this be caused by the regulated switching power supply during start-up or do I have a defective MD4 screen?

Thanks for your inputs.

How long does a static image need to remain displayed on an MD4-7 screen before image burn-in is noticeable?

Assume worst case. (Worst case being probably full brightness with high contrast graphics??)

What is the recommended time-out for when a screensaver should start? Would just dimming it for the screensaver avoid burn-in? How much should it be dimmed?

The MD4 instruction book (rev 2015-12-02) says:

Burn-in

The IQAN-MD4 TFT display, like other computer screens can have a ghost picture

occur if a static image is left on the display for extended periods of time. For the best

viewing over the life of the product we recommend using the screensaver functionality.

NOTICE