ADAPTER 4T8315 - Caterpillar

Introduction
Initial calibration and troubleshooting of the Flo-Tech Speed Control are identical. Many of the settings are interrelated. For this reason, if trouble is experienced, the best procedure is to follow the initial installation routine completely to see if the problem is cured by adjustment of the system.Signal Generator
A signal generator to simulate the output of the MPU will make setup or troubleshooting of the electronic control system easier and safer, since it will allow the technician to set idle and rated speeds and check all wiring without running the engine. The wave form can be sine, square, or triangular. The signal generator must be capable of generating the frequency of the control system, not the rpm of the engine. The frequency will be the number of teeth on the sensed gear which will exposed to the MPU during one revolution of the engine times the desired rpm divided by 60 (revolutions per second). If a signal generator is not available, all checks can be made with the engine, but overspeeds are possible.
TO PROTECT AGAINST POSSIBLE INJURY, LOSS OF LIFE, and/or Property DAMAGE WHEN STARTING the engine, turbine, or other type of prime mover, BE PREPARED TO MAKE AN EMERGENCY SHUTDOWN to protect against runaway or overspeed should the mechanical-hydraulic governor(s), fuel control(s), the driving mechanism(s), the linkage(s), or the control device(s) fail.
Installation Checks
Do the checks in the order indicated. Terminal numbers in this chapter refer to the speed control.1. Check that all electrical connections are correctly made and terminal screws tightened, the magnetic pickup is properly installed and the jam nut tightened, and the fuel valve and drain line are securely fastened and correctly installed.2. Do not start the engine now. Turn on governor power. Check the battery voltage at terminals 1 (+) and 2 (-). It must be from 18 to 32 Vdc (10 to 14 Vdc for the 12-volt control).3. If a signal generator is available: Attach the output to terminals 5 and 6, leaving the MPU connections off. Set the signal-generator output between 2 and 10 Vrms. If a signal generator is not available, proceed to step 8.4. Set the signal-generator frequency to about half of idle speed. Close the Idle/Rated switch. Turn the signal generator and governor power on. The voltage across terminals 3 and 4 should measure about 5 Vdc (Start Fuel Limit must be fully clockwise).5. Set the signal generator for MPU frequency at rated speed. Close the Idle/Rated switch. Set the external speed trim pot (if used) at mid position. Observe the output from terminals 3 and 4. a. If the output is at max-fuel position (about 5 Vdc), slowly turn the rated-speed potentiometer counterclockwise until the signal just begins to move to minimum.b. If the output is at minimum, slowly turn the rated-speed potentiometer clockwise until the signal just begins to move to maximum.Continue to adjust the rated-speed pot very slowly, trying to stop the signal between minimum and maximum. Stop adjusting when the signal moves slowly. It will not