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Caterpillar hydraulic excavators serie D
SERV1852-02 October 2008 GLOBAL SERVICE LEARNING TECHNICAL PRESENTATION 320D-336D HYDRAULIC EXCAVATORS TIER III ENGINES ELECTRONIC CONTROL SYSTEM AND MONITOR Service Training Meeting Guide (STMG) 320D-336D HYDRAULIC EXCAVATORS TIER III ENGINES ELECTRONIC CONTROL SYSTEM AND MONITOR AUDIENCE Level II - Service personnel who understand the principles of machine systems operation, diagnostic equipment, and procedures for testing and adjusting CONTENT This presentation provides an introduction and describes the components and systems operation of the 320D-336D electronic control system and monitor Additional presentations will cover the machine walkaround, engines, pumps and controls, main control valve group, swing system, travel system, and tool control systems in more detail This presentation may be used for selfpaced and self-directed training OBJECTIVES After learning the information in this presentation, the technician will be able to: identify the components and explain the operation of the 320D-336D electronic control system and monitor, and diagnose problems in the electronic control system REFERENCES 320D Hydraulic Excavator Specalog 324D Hydraulic Excavator Specalog 325D Hydraulic Excavator Specalog 328D Hydraulic Excavator Specalog 330D Hydraulic Excavator Specalog Machine Monitoring System - Systems Operation Self-study "300D Series Hydraulic Excavators, 345C Hydraulic Excavator, and 365C & 385C Large Hydraulic Excavators iTIM " '300C' Series Hydraulic Excavators-Electronic Control Systems" iTIM "325C Hydraulic Excavators-Hydraulic Systems" 325D Hydraulic Schematic Estimated Time: hour Illustrations: 24 Form: SERV1852-02 Date: September 2008 © 2008 Caterpillar AEHQ5856 AEHQ5663 AEHQ5665 AEHQ5706 AEHQ5667 RENR8068 SERV7032 SERV2693 SERV2701 KENR6157 SERV1852-02 10/01 -3- Text Reference Electronic Control System TABLE OF CONTENTS ELECTRONIC CONTROL SYSTEM .5 Engine Speed Control 12 Automatic Engine Speed Control (AEC) .13 One Touch Low Idle .15 Engine Speed Protection .16 Visconic Demand Fan Cooling System 20 Hydraulic Demand Fan Cooling System 22 Travel Speed Control 24 Pump Regulation 26 Swing Brake Operation .28 Heavy Lift Mode 30 Back-up System 31 MONITOR 34 CONCLUSION 38 SERV1852-02 10/01 -4- Text Reference Electronic Control System PREREQUISITES "Fundamentals of Mobile Hydraulics Self Study Course" "Fundamentals of Power Train Self Study Course" "Fundamentals of Electrical Systems Self Study Course" "Fundamentals of Engines Self Study Course" TEMV3002 TEMV3003 TEMV3004 TEMV3001 NOTES Nomenclature Change: During the fourth quarter of 2008, the 325D and 330D nomenclature changed The 325D became the 329D and the 330D became the 336D for most arrangements The exceptions are as follows: - The nomenclature for the 325D MH and 330D MH did not change - The nomenclature for the 325D FM and 330D FM did not change - The 325D HD HW did not change into 329D HD HW This model is being discontinued However, the 330D HD HW changed to the 336D HD HW SERV1852-02 10/01 -5- 320D - 336D MACHINE ECM INPUTS AND OUTPUTS MSS Key Reader Air Cleaner Switch Key Start Switch Engine Speed Dial One Touch Low Idle Switch Engine Speed Sensor Pump Pressure Sensor Pump Pressure Sensor Implement Pressure Switch Left Travel Pressure Switch Right Travel Pressure Switch Back-up Switch Hydraulic Lock Switch Text Reference Electronic Control System Power Shift Pressure Solenoid Back-up Switch Travel Speed Change Solenoid Swing Brake Release Solenoid Machine ECM Hydraulic Lock Solenoid Hydraulic Oil Filter Switch Attach Hydraulic Oil Filter Switch Fuel Filter Switch Fuel Filter Switch Water Separator Level Sensor Switch Panel ECM Alarm CAN Data Link Travel Alarm Relay Monitor Overload Warning Switch OK Fine Swing Switch Fuel Level Sensor Hydraulic Oil Temp Sensor Alternator Engine Oil Level Switch Engine Coolant Level Switch Hydraulic Oil Level Switch Engine Coolant Temp Sensor Engine Oil Pressure Switch AIH Control Status (Start Aid) 320D Only Quick Coupler Switch SmartBoom Switch Work Lights Switch Two-speed Travel Switch Upper Window Wiper Switch Automatic Engine Control (AEC) Switch Upper Window Washer Switch Travel Alarm Cancel Switch Heavy Lift Mode Switch Work Tool Control Switch J1 J2 Engine ECM Gateway Worldview ECM PL300 Product Link ECM PL121SR CAT Data Link Service Connect or Elect ronic Technician Communicat ion Adapt er Il ELECTRONIC CONTROL SYSTEM The Electronic Control System controls many of the functions of the 320D-336D Excavators and is pretty much the same system for the 311D to the 345D The electronic control system uses two data links to communicate: - The Engine ECM, the Machine ECM, the monitor, Cat ET, the optional Product Link ECM (PL321SR) , and the Gateway WorldViewer ECM (PL300) communicate via the Cat Data Link - The soft switch panel communicates with the Machine ECM and the monitor on the J1939 CAN Data Link The switch panel is not connected to the Cat Data Link For the Machine Security System, the software is part of the Machine ECM A MSS keyreader provides input into the Machine ECM through the Can Data Link Cat ET is used to diagnose system problems via the Cat Data Link Some of the input and output components of the Machine ECM are also shown in this illustration SERV1852-02 10/01 -6- Text Reference Electronic Control System NOTE: The Gateway WorldViewer ECM or PL300 Network Adapter is the hardware that enables Health Watch on Caterpillar Machines equipped with Caterpillar Electronic Control Modules (ECMs) In addition, the switch channels can be used on any machine, Cat or non-Cat, to monitor on board switches It should also be noted that PL121 must be installed and used in combination with PL300 to enable Heath Watch subscriptions PL321 is a combination of the PL300 Network Adapter and the PL121SR Radio For some markets, factory installed standardization goes into effect for Product Link PL321 will be listed as a "required optional attachment." Health Watch provides: - Event and Diagnostic Codes, History and Alerts - Event and Diagnostic Code Troubleshooting Procedures - Fuel Level, History and Alerts - Fuel Used, History & Graphic Display - Refueling History - Digital Switch Channels SERV1852-02 10/01 -7- Text Reference Electronic Control System 2 The Machine ECM (1) is located on the left side of the machine in the compartment behind the cab The inputs and outputs of the Machine ECM connect to the machine harness by two 54 pin connectors (2) SERV1852-02 10/01 -8- Text Reference Electronic Control System The Engine ECM (1) is mounted to the engine (2) Accessibility to the Engine ECM with the engine in-chassis is limited SERV1852-02 10/01 -9- Text Reference Electronic Control System 4 The Switch Panel ECM is part of the right console The Switch Panel ECM is non-flashable through Cat ET The Switch Panel ECM (1) receives inputs from rocker type switches (2) and from soft switches (3) in soft switch panel (4) SERV1852-02 10/01 - 10 - Text Reference Electronic Control System The soft switch panel includes switches that either turn a function ON/OFF or allow the operator to toggle through different modes of the selected function The soft switches provide the operator with the following functions: Two-speed travel switch (1): When the button is pushed the travel speed is toggled between low and auto - The rabbit indicator indicates auto speed - The tortoise indicator indicates low speed Automatic Engine Control (AEC) switch (2): The AEC function automatically reduces engine speed while there is no hydraulic demand, which reduces noise and fuel consumption - The AEC switch disables and enables the AEC function - Initially, AEC reduces the engine speed by 100 rpm after there has been no hydraulic demand for approximately three seconds - Then AEC reduces the engine rpm to approximately 1300 rpm after there has been no hydraulic demand for an additional three seconds - The additional three second AEC delay time and the low speed of 1300 rpm can be changed using the monitor or Caterpillar Electronic Technician (Cat ET) ... for the 32 5D MH and 33 0D MH did not change - The nomenclature for the 32 5D FM and 33 0D FM did not change - The 32 5D HD HW did not change into 32 9D HD HW This model is being discontinued However,... provides: - Event and Diagnostic Codes, History and Alerts - Event and Diagnostic Code Troubleshooting Procedures - Fuel Level, History and Alerts - Fuel Used, History & Graphic Display - Refueling... 33 0D HD HW changed to the 33 6D HD HW SERV185 2-0 2 10/01 -5 - 32 0D - 33 6D MACHINE ECM INPUTS AND OUTPUTS MSS Key Reader Air Cleaner Switch Key Start Switch Engine Speed Dial One Touch Low Idle