PUMP & MTG GP-HYDRAULIC FAN 1884941 - Caterpillar

Silence All Alarms (Excluding SDU Alarms)
Press and hold the Acknowledge button for one second. The DCU may be configured to acknowledge visible events only. If so, the notification seen in Illustration 5 will be shown.
Illustration 5 g06033698Silence SDU Alarms
Illustration 6 g06033706To silence either a single shutdown or all shutdown event alarms at once, press and hold the "Acknowledge" button for one second. The notification in Illustration 6 will be shown. The "Acknowledge" button must be pressed again to silence the alarms.Troubleshooting Screens
Troubleshooting
Illustration 7 g06033720
Troubleshooting menus
(8) Supply
(9) Switch
(10) 4 - 20 mA
(11) Thermistor
(12) Voltage Sensor
(13) Communication
(14) J1939 Nodes
(15) Output
(16) Run Sources
(17) Start Conditions
(18) Button Test
(19) DiagnosticsThere are troubleshooting menus for the DCU and each connected device. The menus seen in Illustration 7 are only for the DCU. The other devices have similar menus.Troubleshooting Screen
Illustration 8 g06034115
Typical troubleshooting screen
The troubleshooting screens show several useful pieces of information. Only the inputs that are activated in the configuration are shown.Description - The "Toggle" button changes the description to any customized name that is configured to aid in troubleshooting.Terminal - The connector and pin on the back of the DCU.Status - Open, Closed, Not in useData - The physical state of the input.Note: The columns headers may be dragged and resized by swiping from side to side.J1939 Nodes Screen (14)
This screen shows all devices on the two J1939 data buses. The "Toggle" button switches between J1939:1 and J1939:2.Note: Once a "J1939 Note Lost" alarm is acknowledged in the alarm list, the lost node will be removed from this screen.Start Conditions Screen (17)
Illustration 9 g06033753
Select the "Start Conditions" icon to show everything capable of preventing the DCU from starting.
Illustration 10 g06033757
If the "Ready to Start Signal" is active (an "X" is shown under "Preventing Start"), press the RTS soft button to see the "Ready to Start" screen.
Active items in the "Ready to Start" screen may not have an alarm in the alarm list. For example, "Prelube Complete" would not normally cause an alarm, but it must be done before starting the engine.Refer to the Application & Installation Guide, LEBM0062, "Cat A&P Controls Application & Installation Guide" for more information on configuring "Ready to Start" criteria.Button Test (18)
Illustration 11 g06033730The button test screen allows the user to verify operation of the four touchscreen buttons to the right of the display.Diagnostics (19)
Illustration 12 g06033748The diagnostics screen shows information about the CPU and circuit board inside the DCU.Component Locations
This troubleshooting guide is intended for use with Schematic, UENR7807, "Marine Engine and Genset Control MECP IIIB Panel Electrical System". The electrical schematic for the MECP/MGCP IIIB panel is divided by sections with numbers indicating the terminal blocks. Refer to Table 1 for the Schematic terminals mentioned in this troubleshooting guide.
Table 1
Terminals
Terminal List Description
X1.1:1 +24VDC Primary Power Input
X1.1:2 0VDC Primary Power Input
X1.1:3 +24VDC Secondary Power Input
X1.1:4 0VDC Secondary Power Input
X1.2:9 Remote Stop
X1.2:10 Remote Stop
X1.2:11 Remote Acknowledge
X1.2:12 Remote Acknowledge