I am trying to change the speed on the diagnostic bus between an MD5-8 screen and a G12, but it only works at speeds of 250 or 500 kbps. 

At speeds of 500/2000 kbps, I get the error message ‘No contact G1x’.

According to the G12 instructions, it should be able to support this speed.

We've used the 24V DC relay (datasheet is attached) on a XC43 High Side DOUT, but it doesn't seem to like the relay and show us a Open Load error. Could you please help us understand why this happened? Is there anything we need to pay attention to when using relay?Section-1_35_2018.pdf

Good afternoon,

I have a system that uses an MD4-5 as the master and several XCx modules as extension módules. One of the XC44 modules randomly fails to connect when I power up the system, and the LEDs indicate the following error:

"R4:3 3:1:7 Startup check. Expected after update of XC4x to FS capable version."

This error is random; it may not appear for a week or it may appear several times on the same day.

I have checked the wiring and it is correct, as is the battery voltage.

Hi,

I need some help.

I have trouble using CIN sensors.

I have no problem with any others sensor types, but with almost all current sensors (4-20mA), I get an error with the signal (24mA) after some use.

But not all the time.

For exemple, here I have some undesired spikes while measuring.

Spikes are very short so I can't read +24mA in IQAN but I think if there was longer, I would have 24mA, so more than my scaled value at 20mA

For this exemple, the value come back to a good value quickly, but sometime it stays in error ~= 24mA

Have you ever had similar problem ?

Do you have some advises ?

I can't use Vref+5V because my sensors can be supplyed between 8-32Vdc.

The sensors used are made with 3 wires : +24V / 0V / Signal

So the wire 0V is connected to the 0V of the battery, but on every machine, the 0V of the battery is conencted to the chassis of the machine.

Iin the manual it is recommanded to do not connect the 0V to the chassis. It's not possible on mobile machine.

So we tried to connect the 0V to the VREF- but it's doesn't work obviously.

Is there a way to have a VREF for sensors that supply about 10Vdc ?

Hope someone has some experiences that can help us to understand this problem with current sensors !

Got the R4:2 1:1:3 I/O startup test failed error on a MC42FS module.

Even when I only put power (24v external power supply) and a address tag on it.
Tried to put an empty program on the controller. The controller is installing the program but when it restarts it keeps coming back with the same error.

Is there anything I can try to fix this?

We are having a problem with XC43 giving overload errors in multiple DOUT's at the same time.

Construction of the application is MD4 + 2xMC43 + 3xXC43, running with IQANdesign 6.08.

Problem is only in one of those XC43's. We use those DOUT's to control two different kind of solenoids, connected as shown below:

Fault codes are occurring only in:

• C2:29 (load 0,83 A), C2:13 (0,83 A), C2:30 (1,29 A) and C2:14 (1,29 A) overload simultaneously
  • If you activate only one of these DOUT LS's, every one of those are giving fault code
• C1:58 (1,29 A) and C1:42 (1,29 A) overload simultaneously
  • If you activate only one of these DOUT LS's, both of those are giving fault code
• C1:60 (1,29 A) and C1:44 (1,29 A) overload simultaneously
  • If you activate only one of these DOUT LS's, both of those are giving fault code

Sometimes you can drive a day without having any fault codes, sometimes fault codes appear at the first activation at the morning. Even when the machine is standing still, only ignition on and you are activating those solenoids, it can be that you can activate those 50 times without problem and then suddenly the next activation gives you the fault codes.

We have replaced that XC43 with the other one installed in the same machine, still giving the fault codes. The original XC43 didn't give any fault codes when installed to another location. We have checked and measured all the wires, not shorted to the ground or to each others. Measured the coils, everyone has the correct resistance. Replaced all the diodes at the solenoids' connectors, no change. We have dozens of machines with exactly same construction and none of those are having the similar problem.

Any ideas how we should proceed with the troubleshooting? Thanks!

Molex has indicated that the MX123 connector series are scheduled for end of life. These connectors are used on all of the MC4 and XC4 series modules. Does Parker have any information on potential future compatible replacement parts?

The MC2 unit is now obsolete, but we still have units in the field that we need to support, the MC2 unit went through 2 part numbers in its life time as I can see, 20070899 - replaced in 2015 by 20077787. 

What is the difference between these unit and if I found an old one for sale would I still be able to use utilize it? 

Can the MC2 unit (20077787) still be purchased by special order if needed? 

Would like to use the HS+LS configuration to control the HV contactors in an Hybrid configuration.  I am reading note about using Diode to protect against EMF.  But I cannot find specification on acceptable EMF level?  Our contactors have built-in EMF clamping diode rated at 150V?
Also how does the open circuit detection in an off state works?  injecting a current i am assuming. How much?  Just want to avoid issue with Dropoff voltage for the coil.