Hey guys,
I am working on site today and I was wondering if anyone knows wha the wiring limitation is for the distance that a CAT5e can power a K4. We installed an RK3 orignially with no issues, now our customer would like to upgrade to the K4. Yesterday before I got kicked out for the day I tested the power to the K4 and it did not power up. The RK3 powered up right away without issues. This K4 will be used in a one way configuration so I am using 3 conductors from the supplied CAT5e (power, ground, ir.) If anyone knows why the K4 will not power up please let me know. I am also waiting to hear back from Clint at RTI.
Thanks.

What is the output voltage on the XP-8??
The K-4 needs 16 volts... It will work on occasion at times with 12 volts, but if you search it will go sideways on you.

Well I ended up using a CB8 since that was the only thing that AVAD had in stock. Talked to Clint, he told me that a PS16-1 powering the XP8 with a single K4 plugged into the expansion port of the XP8 would do the trick for next time.

I would not do that. I've had problems with two XP-8's on 16V. Just use the included power supply for the processor and get a PS16 for each of the touchpanels.

Well, thanks for the heades up. What sucked about this project is, it had been wired before I started working for the company I am with and the guys who pulled the wire did not pull enough everywhere. So next time I will pull a 14-2. Thank you.