Hypertherm hsd130 interface

I finally got around to getting everything wired up enough to test.
At first, I couldn't get it to start using a relay and a power supply on a switch. I realized the manual says "or dry contact closer", so I wired the relay directly to start- pin 15 and start+ pin 34, which worked.

Now I can't get my arc ok signal. I followed the example wiring in the manual. I connected ark ok+ pin 23 to the relay. Then 24vdc+ pin 37 to the relay. Then ark ok- pin 4 to power ground pin 36.
Wired up like this, the arc will not start and the plasma cutter gives an error. If I disconnect the ground to ark ok- pin 4, the plasma will start without errors. I am getting 24 volts between power and ground, and the 2 ark ok pins will close the circuit when the arc starts.

I am attaching the examples from the manual plus diagram of how I wired the arc ok relay.
I may have wired it up like example 4(which it says don't use) a long time ago before I decided to remove the old interface connection on it, so maybe that messed it up.

Does my ark ok wiring seem right? Should I try wiring it differently or should I consider using a reed relay instead?
 

I ended up using a reed switch. Worked great.
Ran a few cuts in plasmac and the arc volts read as they should.
No apparent problems with the hf start. 
Tommy, thanks for the guidance and helping me safely work through my confusion.

Do you think using a reed switch would have much of an effect on pierce delay?

I only tried at 45 amps. How low is worth testing? 

I tried a few cuts at 20 amps and got arc ok, but couldn't get any at 10 amps, which is fine, can't imagine needing 10 amps.
I did a fair bit of cutting at 45 amps and I did lose the arc ok signal in the middle of a cut. It was artsy text so I assume the feed was lowered automatically like it does for small holes. It only happened once, so it may be a fluke.

I have plasmac.arc-lost-delay set to .1. Should I try increasing that or is there a better solution?

I sure hope this hypertherms amp setting is more accurate than your china one, since I have no way of measuring actual amps.

Thanks again