105489-2073 ZEXEL 9 420 612 126 BOSCH GOVERNOR 9420612126 1054892073 223005083a

Keypad
Keypad (6) is used to control the information that is shown on upper display (4) and lower display (5). The seven keys have two sets of functions, normal functions and service functions. For a description of the service functions of the keys; see the topic Service Mode. The normal functions of the keys are: Left Key- This key only functions when the GSC is in service mode. See the topic Service Mode. Phase Select Key- Selects which phase of the generator output is shown on the GSC. Pressing this key allows the operator to check the voltage, current, and frequency of each phase one at a time. Engine Meter Key- Stops the scrolling of engine conditions on lower display (5) and continuously shows the value for one particular engine condition. The pointer flashes to indicate scrolling is stopped. Pressing the key again, resumes the scrolling of engine conditions. Lamp Test Key- Performs a lamp test on the GSC and the optional alarm module. On the GSC the eight fault indicators are ON continuously, every segment of upper display (4) and lower display (5) are ON. On the optional alarm module all of the indicators are ON and the horn sounds. Alarm Codes Key- If the fault alarm indicator (3) is FLASHING, pressing this key causes the upper display (4) to show the corresponding alarm fault code. Pressing this key again, resumes the showing of generator output information on the upper display (4). If the fault alarm indicator (3) is OFF, this key has no function. For more information on alarm fault codes, see the topic Fault Description. Exit Key- This key only functions when the GSC is in service mode. See the topic Service Mode. Service Mode Key- Pressing this key causes the GSC to enter service mode. See the topic Service Mode.Engine Protection Controls
Engine and generator operating conditions and parameters are monitored and displayed on the Generator Set Control (GSC) Panel. The GSC detects faults that are alarm and shutdown conditions.The engine will continue to run when an alarm condition fault is displayed. The engine will automatically shut down if one of the following faults is detected and displayed.* Low oil pressure,* High coolant temperature,* Engine overspeed,* Low coolant level (if provided),* Engine overcrank.The activation of the Emergency Stop Push Button (ESPB) is also provided on the control panel.Fault Indicators
The eight fault indicators, located on the front of the GSC, are used to show and describe a fault that is present. * The yellow fault alarm indicator flashes when the GSC detects a fault that is an alarm condition. The engine continues to run and start. The fault alarm indicator is accompanied by an alarm fault code that is shown on the upper display when the Alarm Codes Key is pressed. Refer to Service Manual SENR5827 for fault code descriptions. * A red fault shutdown indicator flashes when the GSC detects a fault that is a shutdown condition. The engine is shutdown if it is running