CONTROL GP-UNPROGRAMMED 4884875 - Caterpillar

Tachometer
When the 150-7700 Tachometer is in the normal mode, the tachometer displays a numeric value. The range of the numeric values is from 0 to 9999. These values represent the range of the rpm. The tachometer also displays a bar graph of the sensed speed. If a setpoint value is exceeded, the associated output switch turns "ON". An annunciator turns on and the annunciator displays one of the following numbers: 1, 2, 3 and 4. These numbers indicate that a switch has tripped.Note: The units and the bar graph can be turned OFF.Keypad
The 150-7700 Tachometer contains a front keypad with six keys which is used to view the setpoints. The keypad is also used to change the setpoints. The 150-7700 Tachometer is also used to configure the gauge. The following keys compose the keypad: "MODE", "ENTER", "SETPTS", "ESC" and "UP" and "DOWN" arrow keys. Only one key should be pressed at a time."Mode Key"
The "MODE" key is used to enter the configuration mode. The "MODE" key is used to scroll through the menu of the setup for the gauge.Enter Key
The "ENTER" key is used in the setup mode in order to proceed through the configuration. The "ENTER" key is also used to accept the data. The key is used in the setpoint mode in order to accept the new setpoint. The key is also used to save the new setpoint. Press the "ENTER" key at the end of a configuration after a new setup has been entered. The display will read "SAVE". The display will then read "DONE", and the new data or the new configuration will be stored in the nonvolatile memory."SETPTS Key"
The "SETPTS" key is used to view the setpoint. The "SETPTS" key is also used to change the setpoint. Press the "SETPTS" key when the gauge is in the normal mode. The value and the annunciator for the "number 1" setpoint are displayed. Press the "SETPTS" key again. The value and the annunciator from setpoint "number 2" are displayed. Repeat this procedure for setpoint "number 3" and setpoint "number 4". Press the "SETPTS" key again in order to return to the normal mode."ESC Key"
The "ESC" key can be used at any time during the configuration mode or the setup mode to return to the normal mode. The modified values are not stored in the memory, when the "ESC" key is pressed in any configuration mode. The configuration then returns to the previous values and the display returns to the normal reading.Up/Down Arrow Key
The scroll up key and the scroll down key are used to scroll through the selections in the setup mode. The scroll up key is used to increase the values of the setup and setpoints. The scroll down key is used to decrease the values of the setup and setpoints. When these two keys are held down, the values will rapidly increase or the values will rapidly decrease.Engine Speed Sensor
Illustration 1 g00752305
The Engine Speed SensorThe engine speed sensor sends the engine speed signal to the tachometer.