Wiring up the Alarm output on Leadshine AM882

[m_c]

Either way of wiring in the relay would work. Your first diagram switched the high (positive) side, and your second switched the low (negative/gnd) side.

Only thing that threw me was the markings on your relays. Vcc is a supply voltage in electronics, whereas you've used it for the contacts.

Ricardoco is right that e-stop circuits should be fail safe. For the actual e-stop button circuit, the relay should be active when the e-stop circuit is not in stop condition, with the BOB e-stop wires going through a pair of NO (Normally Open) contacts. That way if anything fails, the machine stops.

With the drive alarm function, a truly failsafe method is not possible due to the fact the alarm only activates when there is a fault, so you need to implement a system that relies on relays/wiring working when there is a fault. This isn't quite as big an issue on the alarm funcion, as a failure to stop when a drive faults out isn't as major a safety issue. At worst two axis keep moving, while one sits still.