The machining center is VM24. it had occured an alarm as 450: Emergency stop condition. Reset drives or press <ESC> to clear this message. I pushed the “reset” button the machine has no active and as same as previously. So I check the 24 volt power supply, the value is 24.3 volt, it like ok and the wires contact are all ok. I found the relay of “CR 29” is not work. How can I let it work? What’s the work condition?