Having a control problem on a Matsura MC-500V with a Yasnac 3000B control.
Machine Circuit Breaker is turned on and power is supplied to the electrical enclosure (3 Ph. 208VAC). Operator presses control "on" button the NMC relay picks up momentarily then drops out (it has the 100VAC on one side of the contacts), there are no indications on the operators control panel (No LEDS or Indicators are on), there is no low voltage power (5VDC, 12VDC,24VDC) and no 1 Ph 208VAC to the input side of the power supply. Machine Control Side is completely dead.

Machine prints do not show the electrical distribution for the NMC relay or the SVM relays, I suspect an interlock somewhere (I've checked all the usual stuff - E-Stops, O/L's, Lube Level etc) everything seems to be OK.

Does anyone out there have a print depicting the electrical side showing initialization of the NMC relay? We would be happy to pay for prints of that part of the machine.

Thanks;
nnpepe