CABLE AS 2220841 - Caterpillar

Introduction
Because of the variety of installations, plus system and component tolerances, the control must be tuned to each system for optimum performance.This chapter contains information on how to enter control set points through the control's menu system using the Set Point Programmer. See the next chapter for prestart-up and start-up settings and adjustments.
An improperly calibrated control could cause an engine overspeed or other damage to the engine. To prevent possible serious injury from an overspeeding engine, read this entire procedure before starting the engine.
Set Point Programmer and Menus
The Set Point Programmer is a hand-held computer terminal that gets its power from the 701 control. The terminal connects to the 20 mA loop serial port on the control. To connect the terminal, slightly loosen the right hand screw in the cover over J1 and rotate the cover clockwise to expose the 9-pin connector. Then firmly seat the connector on the terminal into J1.The programmer does a power-up self-test whenever it is plugged into the control. When the self-test is complete, the screen will be blank. Press the SP (Space) key to display the part number and revision level of the software in the control. (The SP key also turns on the display backlighting.) Refer to this number and revision level in any correspondence with Woodward Governor Company (write this information in Appendix A).The set points or adjustments of the control are arranged in five menus. You access these menus with the A, B, C, D, and 1 keys. Pressing the appropriate key selects the first item on each menu.The programmer keys do the following functions (see Figure 4-1):
Figure 4-1. Set Point Programmer Functions Pressing the appropriate key (A, B, C, D, 1) selects the desired menu. To step through the menu, use the left and right arrow keys. The right arrow advances through the menu and the left arrow moves backward through the menu. The menus are continuous; that is, pressing the right arrow at the last menu item takes the menu to the first item, or pressing the left arrow at the beginning of the menu takes the menu to the last item.To adjust a set point, use the up arrow to increase the value, or the down arrow to decrease the value. Holding the up or down arrow longer than a few moments will cause the rate of change to increase. This is useful during initial setup where a value may need to be changed significantly.On the display menu, Menu D, the up or down arrow must be pressed to update the display. Holding down the up or down arrow allows continuous updating of the display for monitoring speed, actuator output, etc.Finally, use the "=" key to save entered values. After you are satisfied with all entries and adjustments, press the "=" key to transfer all new set point values into EEPROM memory. The EEPROM retains all set points when power is removed from the control.
To prevent possible damage to the engine resulting from improper control