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| Illustration 1 | g00506032 |
Generator Set Main Display Module Caterpillar Monitoring System (1) Alert indicators (2) Display area (3) Gauge Cluster Module "I" (4) Gauge Cluster Module "II" | |
Information that is received from sensors is shown on the Quad Gauge Modules. the Quad Gauge Modules show the information that is received from the sensors. The Main Display Module uses the information directly from the sensors, senders or the engine ECM through the CAT Data Link in order to drive the gauge needles of the Quad Gauge Modules to the appropriate position. The needles will point straight up under normal conditions.
The Main Display Module uses Harness Codes in order to determine the number of Gauge Cluster Modules that are present. The following charts show the Harness Codes for Standby options, Prime options, and Premium options. Engine applications that have the Premium Gauge Cluster Modules imply that the Standby Gauge Cluster Modules and the Prime Gauge Cluster Modules are used as well. The Standby Quad Gauge Cluster includes gauge 1 through gauge 4. The Prime Quad Gauge Cluster includes gauge 5 through gauge 8. The Premium Quad Gauge Cluster includes gauge 9 through gauge 12.
| Generator Engine | ||
| Standby Only | ||
| Harness Code | Pin | State |
| 0 | 31 | OPEN |
| 1 | 03 | OPEN |
| 2 | 12 | GROUND |
| 3 | 22 | GROUND |
| 4 | 16 | GROUND |
| 5 | 06 | GROUND |
| Generator Engine | ||
| PRIME | ||
| Harness Code | Pin | State |
| 0 | 31 | OPEN |
| 1 | 03 | GROUND |
| 2 | 12 | OPEN |
| 3 | 22 | GROUND |
| 4 | 16 | GROUND |
| 5 | 06 | GROUND |
| Generator Engine "SCAC" | ||
| PREMIUM | ||
| Harness Code | Pin | State |
| 0 | 31 | GROUND |
| 1 | 03 | OPEN |
| 2 | 12 | OPEN |
| 3 | 22 | GROUND |
| 4 | 16 | GROUND |
| 5 | 06 | GROUND |
| Generator Engine | ||
| PREMIUM | ||
| Harness Code | Pin | State |
| 0 | 31 | OPEN |
| 1 | 03 | OPEN |
| 2 | 12 | OPEN |
| 3 | 22 | GROUND |
| 4 | 16 | GROUND |
| 5 | 06 | GROUND |
Note: Reference Testing And Adjusting, "Connector Contact Description Of Main Display Module" for more information about the Connector Contacts for Generator Sets.
Quad Gauge Module For Standby Generator Set Applications
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| Illustration 2 | g00530411 |
(1) Engine Oil Pressure (2) Engine Coolant Temperature (3) System Voltage (4) Engine Oil Temperature | |
Engine Oil Pressure (1)
This module displays engine oil pressure over a range of 100 kPa (14.5 psi) to 600 kPa (87 psi).
When the needle is pointing straight up, the value for the gauge equals 400 kPa (58 psi).
On EUI systems, the information is received through the CAT Data Link from the engine ECM. On MUI engines, the information is received directly from the engine oil pressure sensor.
Engine Coolant Temperature (2)
This engine coolant temperature gauge displays engine coolant temperature over a range of 60°C (140°F) to 120°C (248°F).
When the needle is pointing straight up, the value for the gauge equals 90°C (194°F).
On EUI systems, the information is received from the engine ECM through the CAT Data Link. On MUI engines, the information is received directly from the engine coolant temperature sensor.
System Voltage (3)
This gauge displays battery voltage or charging system voltage over a range of 18 DCV to 32 DCV.
When the needle is pointing straight up, the value for the gauge equals 26 DCV.
The information is received from the engine ECM through the CAT Data Link.
Engine Oil Temperature (4)
This module displays engine oil temperature over a range of 60°C (140°F) to 120°C (248°F).
When the gauge is pointing straight up, the value for the gauge equals 105°C (221°F).
On EUI systems, the information is received from the engine ECM through the CAT Data Link. On MUI engines, the information is received directly from the engine oil temperature sensor.
Quad Gauge Module For Prime Generator Set Applications
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| Illustration 3 | g00530415 |
(1) Inlet Air Pressure (Boost) (2) Aftercooler Coolant Temperature (3) Inlet Air Temperature (Fuel Pressure) | |
Inlet Air Pressure (Boost) (1)
This module displays inlet air pressure (boost) over a range of 0 kPa (0 psi) to 400 kPa (58 psi).
When the gauge is pointing straight up, the value for the gauge equals 190 kPa (27.6 psi).
On EUI systems, the information is received from the engine ECM through the CAT Data Link. On MUI engines, the information is received directly from the inlet air pressure sensor.
Aftercooler Coolant Temperature (2)
This module displays aftercooler coolant temperature over a range of 20°C (68°F) to 120°C (248°F).
On EUI systems, the information is received from the engine ECM through the CAT Data Link. On MUI engines, the information is received directly from the aftercooler coolant temperature sensor.
Inlet Air Temperature (3)
This module displays inlet air temperature over a range of 40°C (104°F) to 120°C (248°F).
When the gauge is pointing straight up, the value for the gauge equals 75°C (167°F).
On EUI systems, the information is received from the engine ECM through the CAT Data Link. On MUI engines, the information is received directly from the inlet air temperature sensor.
Fuel Pressure (4)
This gauge displays fuel pressure over a range of 200 kPa (29 psi) to 600 kPa (87 psi).
When the needle is pointing straight up, the value for the gauge equals 500 kPa (72.5 psi) for all applications.
On EUI systems, the information is received from the engine ECM through the CAT Data Link. On MUI engines, the information is received directly from the fuel pressure sensor.
Quad Gauge Module For Premium Generator Set Applications
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| Illustration 4 | g00530412 |
(1) "RH/LH" Exhaust Temperature (2) "RH/LH" Air Inlet Restriction (3) Fuel Filter Restriction (4) Oil Filter Restriction | |
"RH/LH" Exhaust Temperature (1)
This module displays the exhaust temperature over a range of 400°C (752°F) to 750°C (1382°F).
When the needle is pointing straight up, the value for the gauge equals 600°C (1112°F).
On EUI systems, the information is received from the engine ECM through the CAT Data Link. On MUI engines, the information is received directly from the RH exhaust temperature sensor or the LH exhaust temperature sensor.
"RH/LH" Air Inlet Restriction (2)
This module displays the air inlet restriction for the engine over a range of 0 kPa (0 psi) to 10 kPa (1.45 psi).
When the needle is pointing straight up, the value for the gauge equals 3 kPa (.44 psi).
On EUI systems, the information is received from the engine ECM through the CAT Data Link. On MUI engines, the information is received directly from the sensor for the "RH" air inlet restriction or the sensor for the "LH" air inlet restriction.
Fuel Filter Restriction (3)
This module displays fuel filter restriction over a range of 20 kPa (2.9 psi) to 120 kPa (17.4 psi).
The information is received from the engine ECM through the CAT Data Link.
Oil Filter Restriction (4)
This module displays oil filter restriction over a range of 20 kPa (2.9 psi) to 150 kPa (21.75 psi).
When the needle is pointing straight up, the value for the gauge equals 60 kPa (8.7 psi).
The information is received from the engine ECM through the CAT Data Link.