GE Monogram ZTX Oil Pressure Sensor Input, Temperature Sensor Input, Fuel/Run Contact Output

Engine Controller Accessory Board (Optional)

Oil Pressure Sensor Input

(Oil pressure contact to be normally open, held closed

by adequate oil pressure)

Approximately five seconds after emngine starter signal is sent, if terminal X3 is open to ground or returns to open state thereafter the generator Starter and Fuel/Run outputs are opened and locked out. After cause is deter- mined and corrective action is taken and verified by quali- fied technician, controller can be reset via reset button.

Temperature Sensor Input

(Temperature sensor contact to be normally open, closed by over-temperature condition)

Approximately five seconds after the engine starter signal is sent, if terminal X1 is connected to ground Starter and Fuel/Run outputs are opened and locked out. After cause is determined and corrective action is taken and verified by a qualified technician, the controller can be reset via the reset button.

Fuel/Run Contact Output

This output is activated closed whenever the engine is running. This will keep the fuel valve open as needed, and will cut fuel supply during the above mentioned lockouts or when the engine is no longer called to run.

Start Contact Output

This output is activated closed during cranking of the engine. Output will deactivate once the controller senses that the generator output has reached 33% of frequency indicating engine has reached running RPM.

Generator Battery Input

This input is required to support the controller’s operation.

Controller
					Generator Battery Input￿
					(12 Vdc)
Engine￿				X9	X10
				+	–￿
Controller
+	–￿ +		–￿
X1	X2	X3	X4	X5	X6
					Start Contact Output￿
					(28 Vdc @ 5 amps)
Input￿			Input￿		Fuel/Run Contact Output￿
Temperature￿		Oil Pressure￿			(28 Vdc @ 5 amps)
Sensor￿		Sensor￿
(12 Vdc)		(12 Vdc)

■ 10 ZTX Operation and Maintenance Manual (62R-2000) GE Zenith Controls ■