I have 2 different units both using MC2 DOUT to control a large solenoid. Both have flyback diodes installed correctly near the relay. After several years of use, both have the MELF resistor for that DOUT failed inside the module. How can i prevent this from happening to a new or repaired module? Fire a smaller relay to control the large solenoid? Add a capacitor to the DOUT line? Another diode inline on the DOUT line? 

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?

I have an MC2 that will not accept a new date/time.  It's stuck on 01/01/2001 - 00:00:00.

I connected to it, and used IQANrun to set date/time, it says it was successful, but the date/time didn't change.  I rebooted the system, did not help.

J1939 TDA is disabled for this machine, RTC is enabled.

Wondering if anyone has seen this before....

Hello Team,

I've been working with potentiometers and parker sensors (pressure and temperature) before without any problems, but now i need to use a voltage output (0-5V) from an amplifier as a voltage input on my MC2. The amplifier is connected to a sensor and have a standard +- output. I've tried to connect + to one of the VIN-x and neg to -VREF (or to the common terminal on the power supply). Tried different combinations but the measurement mode on the MC2 shows zero input all the time. Multimeter measurements confirm that the amplifier output around 1V. Logically don't see why it should now work, but maybe you can advise how 3rd party sensors (amplifiers) are connected to parker systems? Thank you!