Light Machine Corp. Benchman XTr (retrofit)

I've decided to go ahead and retrofit my XT using the Mesa 5i25 + 7i77 combo and LinuxCnc. The Nextmove cards I have don't seem to be the correct version and I'd like to have a more robust machine going ahead. I would like to keep the original power supply with the smoothing circuit on the main board, but has I've read over this thread I see that the power to the servo amps is enable by the OEM software. My thought was that I could enable that power by sending the proper signal to the correct pin on the J1 connector for the Nextmove card. The wiring schematics that were posted here earlier have a pinout of the Nextmove's 100 pin connector, but some of the descriptions for each pin function are difficult to decipher (at least for me). If Don is still monitoring this thread I would really appreciate some help with this.

Here's the wiring schematic I was referring to. The Nextmove pinout is on the last page.

If you only need to supply DC power to the servo amplifiers, the circuit on page 2 in the upper right needs to be powered.
This is done on page 1. You will need 240VAC on J2-5 to J2-6. You will also need +24V on J1-98 to turn on K4 which will bring power out to the transformer on J3. It comes back from the transformer/bridge/inductor to J9 on page 2. How do you intend to wire to the J1 connector? Will you just cut off the Nextmove side of the main cable and rewire as needed? Let me know if you need any advice/comments.

Thanks for the quick reply, Don! That was the plan, to just hack up the Nextmove cable to deliver that signal. So the Nextmove card was able to supply 24V? I was expecting it to be something like 5V.

Actually the 24V is generated on the PCB. The Nextmove card has a relay that is used to switch the 24V. The 24V is only present on the Nextmove card if the ESTOP button is out. See schematic (page 7D2). J1-100 is the relay NO contact, J1-98 (page 1A3) is the relay COM contact. So 24V is generated on the board and is conected to the ESTOP switch. If the switch is out then 24V is applied to the relay contact. When the relay is switched on through the software, 24V is present on J1-98 and powers K4 bringing 240VAC to J3. It is not even close to meeting any current safety standards, but back in 2000, it was sufficient.

So I just need to add a relay between J1-100 and J1-98. What would you recommend to make the ESTOP circuit safer?