HARNESS AS-WIRING 4497479 - Caterpillar

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 above with the Lower contact, terminal 11.4. Continue as above with the Raise contact, terminal 12.5. Close the Remote contacts, terminals 11 and 12. Remote Switch status should be Remote. If not, check 3 and 4 above to determine which input is incorrect.6. Continue as above with the Alternate Dynamics, terminal 13.7. Continue as above with the Failsafe On/Off contact, terminal 14.Any discrete input with power applied should indicate a closed status. If proper voltage is determined at the terminal strip, failure indicates the control input is bad. Replace the control.Remote Input
The following tests calibrate and verify the function of the Remote Input, Analog Input 1. When reading the Set Point Programmer, be sure to update the display by pressing the up or down arrow.1. Connect a 4 to 20 mA or 1 to 5 Vdc source to terminals 18(+) and 19(-). If a mA source is used, a jumper must be installed across terminals 17 and 18. Connect a dc voltmeter across terminals 18(+) and 19(-). Optionally, a mA meter may be installed in series with the 4 to 20 mA source.2. Set the source for 5.0 Vdc (20.0 mA) on the meter. Select Menu 1 on the Set Point Programmer.3. Set the Calibration Key to 49. Select Remote