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Hamilton Sundstrand Company Gas Fuel Metering Valve HFG2.0, Руководство пользователя

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5  TROUBLESHOOTING 

This section provides troubleshooting information for the HFG2.0. You 
can isolate most electrical faults by using an external oscilloscope and 
digital voltmeter (DVM) and computer with diagnostic software. 

The HFG2.0 is comprised of highly reliable components and should not 
develop service problems under normal operating conditions. However, 
over a period of time and service, failures may develop.  Whoever is 
responsible for fault analysis should be thoroughly acquainted with 
physical and electrical configurations, Theory of Operation (Section 2), 
and Installation (Section 1). 

Resolve problems noted during operation or maintenance as soon as 
possible. The causes of many problems can be traced through the 
information contained in the block diagram shown in Section 2. 

CAUTION 

Continuing to operate the valve in a malfunctioning condition is 
hazardous to personnel and can cause property damage. 

Tables 5-1 and 5-2 list common failures that can occur before or after 
valve installation, respectively. 

In addition, the HFG2.0 has on-board troubleshooting capability. The 
ActWiz software has a fault file that you can upload to pinpoint a failure 
cause. See the ActWiz Software Manual for more details. 

If, after following the troubleshooting procedures, you still can’t find the 
cause of the problem and repair it, contact the factory for assistance. 

 

CH. 4: TROUBLESHOOTING THE HFG2.0

 

55

 

Содержание Gas Fuel Metering Valve HFG2.0

Страница 1: ...User Manual HFG2 0 Gas Fuel Metering Valve SD 6009 Rev 6 August 2008 PRECISION ENGINE CONTROLS CORPORATION...

Страница 2: ...is manual in its entirety to fully understand the system Operating the HFG2 0 Gas Fuel Metering Valve in accordance with instructions herein ensures long term and reliable operation If you need additi...

Страница 3: ...ystem Health 45 3 8 Changing Set Up Parameters 50 4 MAINTAINING THE HFG2 0 53 4 1 Refurbishment 53 5 TROUBLESHOOTING 55 5 1 FAULT File 59 APPENDIX A DECOMMISSIONING DISPOSAL 61 APPENDIX B GLOSSARY 63...

Страница 4: ...tion Flow Chart 41 Figure 3 2 HFG2 0 Actuator Position vs DEMAND 43 Figure 3 3 Dead Band of Actuator Position vs DEMAND Curve 44 LIST OF TABLES Table 1 1 Wire List for HFG2 0 Power Harness 14 Table 1...

Страница 5: ...002447 XXX or Any Remanufactured Part with Config 116 and above Configuration 116 and above Firmware version 3 00 and above Third generation isolated RS 232 P Ns 5002605 XXX 5002610 XXX 5002447 XXX or...

Страница 6: ...he HFG2 0 it is necessary for the user to have a fundamental understanding of Electronics concepts such as voltage current and switches Mechanical motion control concepts such as inertia torque veloci...

Страница 7: ...In the event of future transportation requirements this container will minimize any damage during shipment Recommended Installation Process Users must determine if it is best to couple the HFG2 0 to t...

Страница 8: ...rical noise is to Ensure that the HFG2 0 is properly grounded as per Section 1 4 of this manual Environmental Considerations The HFG2 0 operates satisfactorily with ambient air temperature of 40 C 40...

Страница 9: ...rial interface Performance All performance values are based on use with HFG2 0 in default configuration Any changes to HFG2 0 firmware settings to change stroke profile will alter performance values M...

Страница 10: ...Housing 3 piece 85 lbs Max Aluminum Valve Housing 1 piece 190 lbs Max Stainless Steel Valve Housing 3 piece 1 3 Mechanical Installation This section describes proper HFG2 0 installation Ensure complia...

Страница 11: ...ng brackets provided by the engine manufacturer The HFG2 0 can be mounted with any directional orientation whether horizontal vertical or at an angle The clevis must be supported if the HFG2 0 is moun...

Страница 12: ...mately 100 lbs The stainless steel body HFG2 0 weighs approximately 190 lbs PECC recommends using the 0 375 inch diameter clevis to lift the valve in conjunction with the appropriate lifting equipment...

Страница 13: ...cision Engine Controls for other connection options Note To maintain flow control accuracy ten 10 pipe diameters 15 inches straight length minimum is recommended upstream and downstream Flange Bolts P...

Страница 14: ...hrough the vent port is less than 200 cm3 hr air or N2 as test flow The vent port features a 1 8 NPT fitting See Figure 1 4 Consult local installation codes to determine whether and how to connect thi...

Страница 15: ...Figure 1 4 HFG2 0 Dimensions 1 Piece Housing INSTALLING THE HFG2 0 9...

Страница 16: ...10 HFG2 0 USER GUIDE Figure 1 5 HFG2 0 Mounting Orientations...

Страница 17: ...Figure 1 6 HFG2 0 Mounting Provisions 3 Piece Housing Standard Mounting Orientation Shown INSTALLING THE HFG2 0 11...

Страница 18: ...12 HFG2 0 USER GUIDE Figure 1 7 HFG2 0 Mounting Provisions 1 Piece Housing Standard Mounting Orientation Shown...

Страница 19: ...Figure 1 8 HFG2 0 Mounting Provisions 1 Piece Housing Reversed Mounting Orientation Shown INSTALLING THE HFG2 0 13...

Страница 20: ...e thread that is dedicated for the ground connection This hole has been left unpainted and uncoated to ensure a good electrical contact This threaded hole is located on the clevis end of the unit see...

Страница 21: ...r Supply Figure 1 11 Typical Power Connection With Battery WARNING Shock Hazard Connect both the 120 VDC power and auxiliary wires If only the primary power wires are connected the 120 VDC auxiliary p...

Страница 22: ...uous Typical Transient Typical 20 Amps 1 Amp 20 A 60 ms 10 A 600 ms 5 A 100 ms Output Capacitance 12 000 F typical Table 1 2 Power Supply Requirements The output capacitance applies for non battery po...

Страница 23: ...the minimum and maximum expected operating voltages Also the output capacitance should be carefully positioned so that it is never disconnected from the HFG2 0 power input during any contact or switch...

Страница 24: ...erial TX Out 20 WHITE ORANGE GREEN Serial RETURN 20 BLACK OVER TEMP Alarm 20 WHITE BLACK OVER TEMP Alarm RETURN 20 ORANGE FAULT Alarm 20 WHITE ORANGE FAULT Alarm RETURN 20 VIOLET RUN Command 20 WHITE...

Страница 25: ...te For proper operation of the controller the voltage between the control inputs and the negative terminal of the power supply should be below 200 VDC Note The Serial Return is internally connected to...

Страница 26: ...A They are electrically isolated up to 500 VAC from the enclosure 120 VDC power digital I O and serial interface The analog interfaces are not isolated from each other See Figure 1 14 for a typical an...

Страница 27: ...ISCRETE INPUT HFG2 0 DISCRETE OUTPUT FAULT ALARM ORN OVERTEMP ALARM BLK FAULT RTN WHT ORN OVERTEMP ALARM RTN WHT BLK Figure 1 16 Typical Discrete Output Alarm Connections RS232 Serial Communications I...

Страница 28: ...are not electrically isolated If the power input is floating not grounded the serial input connections may have up to 120 VDC present Property Damage Hazard DO NOT connect 24 VDC power to any of the...

Страница 29: ...nduit is not used signal wires should be at least 4 6 inches from any other wires Ensure that all shielded cables are twisted conductor pairs with either a foil or braided shield PECC recommends Belde...

Страница 30: ...24 HFG2 0 USER GUIDE INTENTIONALLY BLANK...

Страница 31: ...racts the poppet assembly exposes fuel from the INLET port chamber to the two orifices The fuel flows through in the annulus between each poppet and fixed orifice and recombines in the OUTLET port cha...

Страница 32: ...VDC nominal that is provided by the user via an integral four wire power harness Refer to Figure 1 10 or 1 11 for a typical connection Refer to the General Specification Summary Table in Section 1 2 f...

Страница 33: ...signals via the integral 17 wire signal harness Refer to Figure 1 14 for typical connections Refer to the General Specification Summary Table in Section 1 2 for feedback specification values Position...

Страница 34: ...28 HFG2 0 USER GUIDE Figure 2 1 HFG2 0 Electronics System Block Diagram...

Страница 35: ...upting the circuit with the user s controller The default configuration for the OVERTEMP alarm is Motor OVERTEMP where the circuit will open if the temperature in two or more of the motor winding exce...

Страница 36: ...assembly is the primary structural system component and supports all the bearings motor cover mountings and connectors It also provides explosion proof containment The housing is fitted with a stainl...

Страница 37: ...e resolver are reeled in the resolver adapter to allow rotation The resolver wires along with the motor and thermistor leads pass through a conduit into the electronics housing Resolver Rotor The reso...

Страница 38: ...bearing and spacers are all stacked on the ball screw shaft and retained by a single nut This arrangement prevents actuator axial loads from passing through the resolver rotor and motor rotor The end...

Страница 39: ...o reduce the fuel exposure from the INLET port chambers to the two orifices When the actuator is fully extended the poppets seat in the orifices to close the valve See Figure 2 3 Soft Seats The orific...

Страница 40: ...34 HFG2 0 USER GUIDE Figure 2 2 HFG2 0 Cut Away View Actuator Main Housing Assembly...

Страница 41: ...Figure 2 3 HFG2 0 Cut Away View Partial CH 2 UNDERSTANDING THE HFG2 0 35...

Страница 42: ...unit serial number Hazardous area operation certification and electrical wiring interface information is also provided When a unit is refurbished by PECC a product refurbishment plate is also attached...

Страница 43: ...Figure 2 5 Typical Refurbishment Plate CH 2 UNDERSTANDING THE HFG2 0 37...

Страница 44: ...38 HFG2 0 USER GUIDE INTENTIONALLY BLANK...

Страница 45: ...orm an internal status check This will also happen after a RESET command has been received See the flow chart in Figure 3 1 for an overview of this process Note If the HFG2 0 receives a SET UP command...

Страница 46: ...Maximum Homing Force is also specified in the Set Up parameters and has a default value of 500 lbf When the pre determined motor current limit is reached the HFG2 0 defines this valve position as Home...

Страница 47: ...Figure 3 1 HFG2 0 Basic Operation Flow Chart CH 3 OPERATING THE HFG2 0 41...

Страница 48: ...ode for the HFG2 0 The actuator firmware program will remain in this state as long as the demand is greater than 4 1 mA Note If RUN command is removed or position DEMAND 2 mA the actuator will go to t...

Страница 49: ...a retraction Interpolation of DEMAND Signal Linear interpolation of the DEMAND signal in the range between 4 mA and 20 mA is the default condition as specified in the Set Up parameters With linear int...

Страница 50: ...uses the HFG2 0 to stop all other operations but the actual resetting of the HFG2 0 does not begin until RESET is returned to its OFF state The RESET command causes the HFG2 0 to reset all internal po...

Страница 51: ...120 VDC power shuts down the HFG2 0 valve Toggling the RESET command will clear the alarms FAULT Alarm The configuration of faults assigned to the FAULT alarm is programmable in the most recent genera...

Страница 52: ...The fault file will provide fault information and possible causes The HFG2 0 must be in the Power Up Set Up state to download the fault file See Section 3 8 for details about the Power Up Set Up stat...

Страница 53: ...es N A No Yes EEPROM Write N A N A Yes N A No Yes Table 3 1 Default Configuration For FAULT Alarm Fault Type Low Alarm High Alarm Fault Enable Persist Time Shut Down Output Driver Overcurrent N A 1000...

Страница 54: ...by watchdog timer timeout or illegal address attempt Fault RDC Failure 1 Sec Tests hardware for RDC failure sets Fault if RDC failure bit set Retract Extended Command N A Fault not used Unregulated V...

Страница 55: ...FG2 0 will shutdown if Any two motor winding temperatures exceed 135 C for ten 10 seconds or more 130 C for 60 seconds The electronics temperature exceeds 115 C for 10 seconds or more 100 C for 15 sec...

Страница 56: ...ftware See the ActWiz Software Manual for further details Power Up Set Up State The HFG2 0 is in Power Up Set Up state immediately after the HFG2 0 has been powered up or reset This is after the syste...

Страница 57: ...interpolated between defined points Linear Position Loop Constant 63 Current Loop PID Constants Proportional 2 0 Integral 200 Derivative 0 Velocity Loop PID Constants Proportional 30 Integral 3 000 D...

Страница 58: ...52 HFG2 0 USER GUIDE INTENTIONALLY BLANK...

Страница 59: ...ss actuator to valve alignment or actuator to load alignment any damage to housing or mounting hardware any damage to power and signal harnesses parts that are worn loose or shifted due to shock vibra...

Страница 60: ...54 HFG2 0 USER GUIDE INTENTIONALLY BLANK...

Страница 61: ...ve problems noted during operation or maintenance as soon as possible The causes of many problems can be traced through the information contained in the block diagram shown in Section 2 CAUTION Contin...

Страница 62: ...nt at valve Valve does not hold consistent position oscillates or dithers Varying fuel demand signal No or low 120 VDC power Ensure stable fuel demand at the actuator Ensure 120 VDC at valve No valve...

Страница 63: ...d Fault File to identify source of fault Clear indicated fault OVER TEMP alarm Ambient temperature limit exceeded Electronics or motor winding temperature out of range Allow actuator to cool and re st...

Страница 64: ...RESET GRY and WHT GRY 4 7 K POWER RED and GREEN High Impedance but not open circuit MOTOR CURRENT BLU and WHT BLU High Impedance POSITION YEL and WHT YEL High Impedance FAULT Alarm ORN and WHT ORN Hi...

Страница 65: ...own to troubleshoot the failure Removing 120 VDC power shuts down the HFG2 0 Toggling the RESET command will clear the fault but it does NOT clear the fault file Note The fault file only records the p...

Страница 66: ...ect an internal tracking error a signal is sent to the MCE Upon receipt the MCE signals a fault This fault does not clear without RESET command Unregulated Voltage Low The MCE signals a fault if the r...

Страница 67: ...lockout tagout procedures and verify no live electrical circuits Disconnect the 4 wires of the integral power harness to the HFG2 0 Disconnect the 17 wires of the integral signal harness to the HFG2...

Страница 68: ...62 HFG2 0 USER GUIDE INTENTIONALLY BLANK...

Страница 69: ...unicates an internal over temperature electronics or motor The user s controller will see an open circuit when the OVERTEMP alarm is active HOME A mechanical rigid stop from which the HFG2 0 calculate...

Страница 70: ...INTENTIONALLY BLANK 64 HFG2 0 USER GUIDE...

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