Cummins onan c300 d6 generator set with power command 1302 controller service repair manual
- 1. Service Manual Generator Set C275 D5/C250 D6 C300 D5/C275 D6 C330 D5/C300 D6 with PowerCommand® 1302 Controller English 11-2007 J0960−0046 (Issue 1)
- 2. i Table of Contents SECTION TITLE PAGE IMPORTANT SAFETY INSTRUCTIONS iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 INTRODUCTION About this Manual 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Generator Set 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . System Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test Equipment 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . How to Obtain Service 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 CONTROL OPERATION General 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control Panel Power On/Off Modes 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front Panel 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control Panel 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . System Messages 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Selecting Auto, Manual Run and Off Modes 2-9. . . . . . . . . . . . . . . . . . . . . . . . Operator Menus 2-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Menus 2-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . History/About Menu 2-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Screen Adjust Menu 2-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fault History Menu 2-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 CIRCUIT BOARD General 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control System Overview 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Base Board 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 TROUBLESHOOTING General 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . InPower Service Tool 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Network Applications and Customer Inputs 4-1. . . . . . . . . . . . . . . . . . . . . . . . . Safety Consideration 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reading Fault Codes 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting Procedure 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- 3. ii SECTION TITLE PAGE 5 CONTROL ADJUSTMENT AND SERVICE General 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit Board Removal/Replacement 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Setup Menu 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Genset Service Menus 5-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Genset Service Submenus 5-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Automatic Voltage Regulator Submenus 5-14. . . . . . . . . . . . . . . . . . . . . . . . . . Electronic Governor Submenus 5-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customer I/O Submenus 5-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Metering Submenus 5-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Annunciator Submenus 5-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Genset Setup Submenus 5-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Genset Submenus 5-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage Protection Submenus 5-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Protection Submenus 5-44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Engine Protection Submenus 5-46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB1 Base Board Customer Connections 5-52. . . . . . . . . . . . . . . . . . . . . . . . . . Auxiliary I/O Module (Optional) 5-53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Optional Relays (K10, K11) 5-53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Transformer (CT) Installation 5-54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 SERVICING THE GENERATOR General 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Generator/Base Board Isolation Procedure 6-2. . . . . . . . . . . . . . . . . . . . . . . . . Testing the Generator 6-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Testing the PMG 6-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bearing Removal/Replacement 6-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Generator Disassembly 6-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Generator Reassembly 6-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 WIRING DIAGRAMS General 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A MENU SEQUENCE DIAGRAMS General A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- 4. iii IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS − This manual contains important instructions that should be followed during installation and maintenance of the generator set and batteries. Before operating the generator set (genset), read the Operator’s Manual and become familiar with it and the equipment. Safe and efficient operation can be achieved only if the equipment is properly operated and maintained. Many accidents are caused by failure to follow fundamental rules and precautions. The following symbols, found throughout this manual, alert you to potentially dangerous conditions to the oper- ator, service personnel, or the equipment. This symbol warns of immediate hazards which will result in severe personal in- jury or death. WARNING This symbol refers to a hazard or un- safe practice which can result in severe person- al injury or death. CAUTION This symbol refers to a hazard or un- safe practice which can result in personal injury or product or property damage. FUEL AND FUMES ARE FLAMMABLE Fire, explosion, and personal injury or death can result from improper practices. • DO NOT fill fuel tanks while engine is running, un- less tanks are outside the engine compartment. Fuel contact with hot engine or exhaust is a potential fire hazard. • DO NOT permit any flame, cigarette, pilot light, spark, arcing equipment, or other ignition source near the generator set or fuel tank. • Fuel lines must be adequately secured and free of leaks. Fuel connection at the engine should be made with an approved flexible line. Do not use zinc coated or copper fuel lines with diesel fuel. • Be sure all fuel supplies have a positive shutoff valve. • Be sure battery area has been well-ventilated prior to servicing near it. Lead-acid batteries emit a highly explosive hydrogen gas that can be ignited by arc- ing, sparking, smoking, etc. EXHAUST GASES ARE DEADLY • Provide an adequate exhaust system to properly expel discharged gases away from enclosed or sheltered areas and areas where individuals are likely to congregate. Visually and audibly inspect the exhaust daily for leaks per the maintenance schedule. Make sure that exhaust manifolds are se- cured and not warped. Do not use exhaust gases to heat a compartment. • Be sure the unit is well ventilated. • Engine exhaust and some of its constituents are known to the state of California to cause cancer, birth defects, and other reproductive harm. MOVING PARTS CAN CAUSE SEVERE PERSONAL INJURY OR DEATH • Keep your hands, clothing, and jewelry away from moving parts. • Before starting work on the generator set, discon- nect battery charger from its AC source, then dis- connect starting batteries, negative (−) cable first. This will prevent accidental starting. • Make sure that fasteners on the generator set are secure. Tighten supports and clamps, keep guards in position over fans, drive belts, etc. • Do not wear loose clothing or jewelry in the vicinity of moving parts, or while working on electrical equip- ment. Loose clothing and jewelry can become caught in moving parts. • If adjustment must be made while the unit is run- ning, use extreme caution around hot manifolds, moving parts, etc. DO NOT OPERATE IN FLAMMABLE AND EXPLOSIVE ENVIRONMENTS Flammable vapor can cause an engine to overspeed and become difficult to stop, resulting in possible fire, explo- sion, severe personal injury and death. Do not operate a genset where a flammable vapor environment can be created by fuel spill, leak, etc., unless the genset is equipped with an automatic safety device to block the air intake and stop the engine. The owners and operators of the genset are solely responsible for operating the gen- set safely. Contact your authorized Cummins Power Generation distributor for more information.
- 5. LS-16L iv ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH • Remove electric power before removing protective shields or touching electrical equipment. Use rub- ber insulative mats placed on dry wood platforms over floors that are metal or concrete when around electrical equipment. Do not wear damp clothing (particularly wet shoes) or allow skin surface to be damp when handling electrical equipment. Do not wear jewelry. Jewelry can short out electrical con- tacts and cause shock or burning. • Use extreme caution when working on electrical components. High voltages can cause injury or death. DO NOT tamper with interlocks. • Follow all applicable state and local electrical codes. Have all electrical installations performed by a qualified licensed electrician. Tag and lock open switches to avoid accidental closure. • DO NOT CONNECT GENERATOR SET DIRECT- LY TO ANY BUILDING ELECTRICAL SYSTEM. Hazardous voltages can flow from the generator set into the utility line. This creates a potential for elec- trocution or property damage. Connect only through an approved isolation switch or an ap- proved paralleling device. GENERAL SAFETY PRECAUTIONS • Coolants under pressure have a higher boiling point than water. DO NOT open a radiator or heat ex- changer pressure cap while the engine is running. To prevent severe scalding, let engine cool down before removing coolant pressure cap. Turn cap slowly, and do not open it fully until the pressure has been relieved. • Used engine oils have been identified by some state or federal agencies as causing cancer or reproduc- tive toxicity. When checking or changing engine oil, take care not to ingest, breathe the fumes, or con- tact used oil. • Keep multi-class ABC fire extinguishers handy. Class A fires involve ordinary combustible materials such as wood and cloth; Class B fires, combustible and flammable liquid fuels and gaseous fuels; Class C fires, live electrical equipment. (ref. NFPA No. 10). • Make sure that rags or combustible material are not left on or near the generator set. • Make sure generator set is mounted in a manner to prevent combustible materials from accumulating under or near the unit. • Remove all unnecessary grease and oil from the unit. Accumulated grease and oil can cause over- heating and engine damage which present a poten- tial fire hazard. • Keep the generator set and the surrounding area clean and free from obstructions. Remove any de- bris from the set and keep the floor clean and dry. • Do not work on this equipment when mentally or physically fatigued, or after consuming any alcohol or drug that makes the operation of equipment un- safe. • Substances in exhaust gases have been identified by some state or federal agencies as causing can- cer or reproductive toxicity. Take care not to breath or ingest or come into contact with exhaust gases. • Do not store any flammable liquids, such as fuel, cleaners, oil, etc., near the generator set. A fire or explosion could result. • Wear hearing protection when near an operating generator set. • To prevent serious burns, avoid contact with hot metal parts such as radiator system, turbo charger system and exhaust system. KEEP THIS MANUAL NEAR THE GENSET FOR EASY REFERENCE
- 6. 1-1 1. Introduction ABOUT THIS MANUAL This manual provides troubleshooting and repair information regarding the PowerCommand® 1302 Control (PCC) and generators for the generator sets (gensets) listed on the front cover. Operating and maintenance instructions for the generator set are in the applicable Operator’s Manual. Engine troubleshooting, repair and maintenance information is provided in the applicable engine service manual. This manual does not have instructions for servicing printed circuit board assemblies. After determining that a printed circuit board assembly is faulty, replace it, do not repair it. Attempts to repair a printed circuit board can lead to costly damage to the equipment. This manual contains basic (generic) wiring diagrams and schematics that are included to help in troubleshooting. Service personnel must use the actual wiring diagram and schematic shipped with each unit. The wiring diagrams and schematics that are maintained with the unit should be updated when modifications are made to the unit. Read Safety Precautions and carefully observe all instructions and precautions in this manual. SYSTEM OVERVIEW The generator set control system consist of the PCC control and the engine control module (ECM). The PCC is a microprocessor-based control for Cummins Power Generation generator sets. The operating software provides control of the generator set and its performance characteristics, and displays performance information on a digital display panel. It accepts menu-driven control and setup input from the push button switches on the front panel. The PCC circuit (Base) board provides: • Voltage regulation, • Alternator/genset protection and diagnostics, • Starter control The Engine Control Module (ECM) provides: • Fuel system/combustion control, • Engine protection and diagnostics, • Speed governing, • Speed sensor processing The ECM fault codes and engine status (oil pressure, coolant temperature, etc.) are displayed on the PCC digital display panel. TEST EQUIPMENT To perform the test procedures in this manual, the following test equipment must be available • True RMS meter for accurate measurement of small AC and DC voltages. • Grounding wrist strap to prevent circuit board damage due to electrostatic discharge (ESD). • Battery hydrometer • Jumper leads • Tachometer or frequency meter • Wheatstone bridge or digital ohmmeter • Variac • Load test panel • Megger or insulation resistance meter • InPower™ service tool (PC based genset ser- vice tool) • PCC1302 interface kit (Used with InPower ser- vice tool) • InSite™ service tool (PC based ECM service tool)
- 7. 1-2 HOW TO OBTAIN SERVICE Always give the complete Model, Specification and Serial number of the generator set as shown on the nameplate when seeking additional service information or replacement parts. The nameplate is located on the side of the generator housing. WARNING Incorrect service or replacement of parts can result in severe personal injury or death, and/or equipment damage. Service per- sonnel must be trained and experienced to per- form electrical and mechanical service. Read and follow Important Safety Instructions on pages iii and iv. Copyright© 2007 Cummins Power Generation. All rights reserved. Cummins and PowerCommand are registered trademarks of Cummins Inc. InPower and InSite are registered trademarks of Cummins Inc.
- 8. 2-1 2. Control Operation GENERAL The following describes the function and operation of the PowerCommand® 1302 Control. All indica- tors, control buttons and graphical display are lo- cated on the face of the control panel as illustrated in Figure 2-2. CONTROL PANEL POWER ON/OFF MODES The power on/off modes of the control panel and op- erating software are Power On and Sleep. Power On Mode: In this mode, power is continu- ously supplied to the control panel. The control’s operating software and control panel LEDs/graphi- cal display will remain active until the Sleep mode is activated. Sleep Mode: In the Sleep mode, the control’s oper- ating software is inactive and the LEDs and the graphical display on the control panel are all off. Sleep mode is a feature used to reduce battery power consumption when the control is not being used and is in either the Off or Auto mode. When all conditions are met (i.e., no unacknowl- edged faults and the control is in the Off or Auto mode) the Sleep mode is activated after five min- utes of keypad inactivity. To activate the control and view the menu display without starting the generator set, press any control button. When shipped from the factory, Sleep mode is en- abled. TB15 jumper installation: Install jumper between TB15-1 and TB15-5 to disable sleep mode. BASE BOARD ADD JUMPER (TB15-1/TB15-5) TO DISABLE SLEEP MODE FIGURE 2-1. SLEEP MODE ACTIVATION SETTINGS
- 9. 2-2 PREVIOUS MENU LEVEL BUTTON GRAPHICAL DISPLAY OFF MODE BUTTON DISPLAY MENU SELECTION BUTTONS LED INDICATORS CONTROL PANEL FIGURE 2-2. FRONT PANEL FRONT PANEL Figure 2-2 shows the features of the front panel, which contains a control panel.
- 10. 2-3 CONTROL PANEL The control panel includes six LED indicators, the graphical display, and six buttons used to navigate through the menus and adjust parameters. Graphical Display This graphical display is used to view menus of the menu-driven operating system. The bottom of the graphical display indicates the functions that are available by pressing the four selection buttons. Re- fer to the menu trees later in this section. System messages (communication, event, status and fault) are also shown on the graphical display. For more information, see System Messages later this section. Display Text / Symbolic Versions This graphical display can be set up to show either text or symbolic versions for fault messages, some Operator menus, and the Mode Change menu. A description of commonly used symbols used are in- cluded in Table 2-1. Combinations of symbols are used to display some fault conditions. Additional specialized symbols are also used for some faults (see Section 4). When shipped from the factory, symbolic display is selected. (Refer to Setup menu in Section 5 to change to text or symbolic display.) TABLE 2-1. SYMBOLS SYMBOL DESCRIPTION Generator Warning Fault Generator Shutdown Fault Coolant Temperature Oil Pressure Voltage Alternating Current (VAC) Voltage Direct Current (VDC) AC Current Hz Frequency Battery Out of Range High or Pre-High Low or Pre-Low Annunciator
- 11. 2-4 Display Menu Selection Buttons Four momentary soft-key buttons are used to step through the various menus and to adjust parame- ters. These selection buttons are “active” when a word or symbol in the graphical display is shown above the button. Some submenus do not include any active buttons. The function of the four selection buttons varies with each menu. • When the symbol is displayed, the selection button can be used to switch to Auto mode. • When the symbol is displayed, the selec- tion button can be used to switch to Manual Run mode. • When the up and down triangles ( and ) are displayed, the selection buttons are used to navigate between a series of submenus. NOTE: When any Operator menu (Figure 2-13 is displayed, a series of Service menus can be viewed by simultaneously pressing the and selection but- tons for two seconds. NOTE: When a fault is displayed, it can be cleared from the front panel by press- ing the or button. • When a symbol is displayed, the selection button can be used to abort the Auto or Manual Run mode and return to the Operator menu that was displayed before the Auto or Manual Run mode was selected. • When ADJUST is displayed, the selection button is used to display an adjustable menu. When the ADJUST button is pressed, the first adjustable parameter or value in the sub- menu is highlighted. • When the symbol is displayed, the selec- tion button is used to navigate to an editable field within a menu. • When the + and − symbols are displayed, the selection buttons are used to increase or de- crease a parameter or value shown on the screen. When changing values, pressing the button be- low the + symbol increase the value and press- ing the button below the − symbol decreases the value. • When SAVE is displayed, the selection but- ton is used to save changes made in a sub- menu. If the Previous Menu button is pressed before pressing SAVE, the changes are not saved. • Some menus include a list of numbered sub- jects. These menus include numbers in pa- renthesis (for example, (1)) displayed above the selection buttons. The selection buttons are then used to display submenus of the subjects included in the list. • When a black box is displayed, the selection button has no function.
- 12. 2-5 Previous Main Menu Button Press the button to view the previous main menu. NOTE: In the Screen Adjust menu, settings are not saved when the button is pressed. The button is also used to acknowledge warn- ing and shutdown messages after the fault has been corrected. Pressing this button clears the fault from the front panel display and the previous menu is redisplayed. NOTE: Pressing the or button also clears the fault from the front panel display. PREVIOUS MAIN MENU BUTTON OFF BUTTON FIGURE 2-3. PREVIOUS MAIN MENU AND OFF BUTTONS Off Button Press the button to switch to the Off mode. The Off mode will disable the control Auto or Manual modes. If the button is pressed during generator set op- eration (manual or remote start), the engine will im- mediately shut down. If possible, hot shutdown un- der load should be avoided to help prolong the reli- ability of the generator set. The button is also used to acknowledge warn- ing and shutdown messages after the fault has been corrected. Pressing this button clears the fault from the front panel and resets the control. Not in Auto Indicator This red lamp is lit when the control is not in the Auto mode. Shutdown Status Indicator This red lamp is lit when the control detects a Shut- down condition. The generator set cannot be started when this lamp is on. After the condition is corrected, the lamp can be reset by pressing the (off) button. Warning Indicator This yellow lamp is lit whenever the control detects a warning condition. This lamp is automatically shut off when the warning condition no longer exists. Remote Start Indicator This green lamp indicates the control is receiving a remote run signal. Auto Indicator This green lamp indicates the control is in Auto mode. Auto mode can be selected by pressing the selection button from any of the Operator me- nus (see Figure 2-13). Manual Run Indicator This green lamp indicates the control is in the Manu- al Run mode. Manual Run mode can be selected by pressing the selection button from any of the Op- erator menus (see Figure 2-13).
- 13. 2-6 SYSTEM MESSAGES A system pop-up message is displayed when the event it is displaying becomes active. These pop-up messages remain displayed until pre-empted by another pop-up message or until the or the display buttons is pressed. Once the or the button is pressed, the previous screen is redis- played. Communication Messages System messages are displayed for initial power-up or when there is a subsequent loss of communica- tions. Note that the Auto and Manual Run modes can be selected when communication messages are displayed. Upon initial power-up, the message “Establishing communication with control” is displayed (see Fig- ure 2-4). This menu also displays the screen’s soft- ware number and version. When the display detects that it is no longer com- municating with the control, the Shutdown, Warn- ing, and Remote Start LEDs are turned off. If communications are lost, the message “Re-es- tablishing communication with control” is displayed until communications have been re-established (see Figure 2-5). The LEDs then return to the state determined by the control. If either communication message remains displayed (cannot view other menus), contact an authorized service center for service. This indicates that com- munications between the control panel and the con- trol logic is lost. FIGURE 2-4. ESTABLISHING COMMUNICATION WITH CONTROL FIGURE 2-5. RE-ESTABLISHING COMMUNICATION WITH CONTROL
- 14. 2-7 Event Messages When pre-set events (time delay to start or stop) are activated, Event messages are displayed showing the time remaining until the event occurs (see Fig- ure 2-6). Status Messages Status messages for some events are displayed on the control panel with a code number but are not an- nounced with a lamp indicator. Text status mes- sages include the event code, a short description, and the time the event occurred. Symbolic status messages include the event code and symbols to indicate the type of event that occurred. On Full Authority Electronic engines, the engine controller saves data after each run. During this time, the display displays the message shown in Figure 2-7. The generator can still be started while the ECM Datasave is in progress. Event = TIME DELAY TO START, or STOP FIGURE 2-6. EVENT MESSAGE FIGURE 2-7. DATASAVE STATUS MESSAGE
- 15. 2-8 Fault Messages A Fault message is an indicator of a Warning or Shutdown condition. It includes the fault number, a short description, and when the fault occurred (see Figure 2-8). Symbolic fault messages include the fault code number and symbols, indicating the type of fault (see Figure 2-9). With the symbolic versions of fault messages, the and symbols flash. Section 4 provides a list of fault codes, fault types, messages displayed, and descriptions of the faults. Five of the most recent faults are placed in a fault history file that can be viewed using the Fault Histo- ry Menus (see Figure 2-19). Fault Acknowledgement Shutdown faults must be acknowledged after the faults have been corrected. If in Auto or Manual Run mode, the control must be set to “O” (off). Also, faults are acknowledged when in Auto and the Re- mote Start command is removed. Faults are cleared from the control panel display by pressing the , , or button. Faults are re-announced if they are detected again after being acknowledged. Fault = WARNING or SHUTDOWN FIGURE 2-8. FAULT MESSAGE - TEXT VERSION 1 214 EXAMPLE OF A SYMBOLIC WARNING FAULT EXAMPLE OF A SYMBOLIC SHUTDOWN FAULT FIGURE 2-9. FAULT MESSAGES − SYMBOLIC VERSION
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