I start de generator ahd the light of L.H.propect is on and emergenci stop and off de generator.

190.3 volts isn't enough output for a 230 / 240 volt generator. It is protecting electronics that may be connected.

Specs show
Voltage (V) 115/230 120/240
https://www.google.com/search?q=L.H.+Propect+message%3F+Kipor+KDE6700TA+diesel+generator

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Hello, friend, you can check the user manual or ask the supplier who provide the genset to you.

Emergency shutdown operation is required when one of the above conditions occurs in diesel generator set.Diesel generating set itself has an emergency stop button, at this time, press the emergency stop button or quickly press the stop control handle of fuel injection pump to the stop position, the diesel generator will quickly cut off the load, and immediately close the throttle, while the red "emergency stop" light is on. Need to press the button again to delete the emergency stop signal. If there are serious faults or distribution faults, you can also press the button on the control panel, and the unit will stop immediately.

In fact, all faults always give operators some warning signal before spare parts break down or engine damage occurs. So the operators need to be smart, and notice alarm signals (sudden drop in oil pressure, abnormal sound, etc.) and immediately stopping the engine.
Emergency shutdown operation is different from normal shutdown operation.
Emergency shutdown operation.Once the operator finds that there is a serious fault or distribution fault in thediesel generating set, he can press the emergency stop button of the control panel to stop the unit immediately. If there is no special circumstances, we advise users not to stop the unit at will through the emergency stop button.

I would try disconnecting the oil pressure sensor temporarily to isolate that circuit as the possible cause of it shutting down.

there are too emergency stop sensors on generators
one is over load
the other is low oil level in the sump (Low oil pressure)
That sensor is known to trigger and activate the emergency stop so check it out after you check the oil level in the sump

which type of generator had an Olympian GP18 which would start and stop immediately, we were suspecting that the emergency switch had been pressed and left on but it so happened that the starter relay was the one loose.

Regards
George

Over crank is just that too much cranking with a filed to start. Plese check gas pressure and for voltage on the fuel shut off solenoid

OC means OVERCRANK safety circuit stopped the auto start-up so you wouldn't burn up the starter. There is a reason the generator didn't start. Low battery, not enough fuel pressure, clogged air filter, bad starter... You just have to eliminate as many as you can visually. Rebooting the generator should clear the OC condition and you can try to start it manually.

si tiene transfer automatico solo poner un swicht en hilo 1N para cortar senal de entrada al generador del utility power que sensa la presencia de voltage en caso de falta arranca el generador en forma de prueba

Hi,
I just guessing here but it could mean that the oil pressure is too low.
I'd check the oil level first, then look for the oil pressure switch and temporarily disconnect it.

Regards,
Carl