CONTROL GP-TRANSMISSION 2612207 - Caterpillar

General
The following troubleshooting guide is an aid in isolating trouble to the control box, actuator, plant wiring, or elsewhere. Troubleshooting beyond this level is recommended ONLY when a complete facility for control testing is available.
The control can be damaged with the wrong voltage. When replacing a control, check the power supply, battery, etc., for the correct voltage.
Troubleshooting Procedure
Table 6-1 is a general guide for isolating system problems. This guide assumes that the system wiring, soldering connections, switch and relay contacts, and input and output connections are correct and in good working order. Make the checks in the order indicated. Each system check assumes that the prior checks have been properly done.Control Test and Calibration
General
Do the following checks on the 701 Control. Then verify the functioning of set points and adjustments.1. Connect the Set Point Programmer to the control in accordance with the instructions in Chapter 4. Verify that correct voltage and polarity are applied to the control. Verify that the programmer does its power-up tests. Failure to do the power up test indicates either the control or Set Point Programmer has failed. Replace the control or Set Point Programmer.2. Press the SP key. The message "701 Speed Control P/N 5410-866" should appear. Failure indicates either the control or Set Point Programmer has failed. Replace the control or Set Point Programmer.3. Select Menu D. Step through the menu to the Self Test Result step. Verify that the displayed value is 49. If any other value is displayed, replace the control.4. Select Menu A. Verify that all set points are as recorded during installation. Repeat for Menus B, C, and 1. If any differences are found, change the set point(s) to the correct value. Press the "=" key. The message "Set Points Saved" should be displayed. Remove power from the control for at least 10 seconds. Verify correct values were retained during power down. Failure indicates the control has failed and should be replaced.Discrete Inputs
Do the following test to verify the function of the Discrete Inputs. Don't do these tests with the engine in operation. When reading the Set Point Programmer, be sure to update the display by pressing the up or down arrow.1. Close the Run/Stop contact or apply 24 Vdc between terminals 8(-) and 9(+) to select Run. Select Run/Stop Switch Status on Menu D. The status should be closed. If the value does not change from closed to open when the Run/Stop switch is opened, verify the voltage at the control terminals. If correct voltage is verified, the control has failed and should be replaced.2. Close the Idle/Rated contact or apply voltage to terminal 10(+). The Idle/Rated switch status should change from closed to open when the voltage is removed.3. Continue as