Hamilton-sundstrand-company Gas Fuel Metering Valve HFG2.0 Manuel d'utilisateur

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

4 HFG2.0 USER GUIDE Certifications North American Certifications CSA Class I, Div 1, Group B, C, D; T4 European Directive Compliance (CE Mark

Figure 1-1. Typical HFG2.0 Gas Fuel System Installation Figure 1-2. Alternate HFG2.0 Gas Fuel System Installation Dimensions Figure 1-3 and Fi

6 HFG2.0 USER GUIDE The HFG2.0 includes four (4) 0.50-24 UNC-2B mounting holes with stainless steel heli-coil inserts for securing the valve body. Th

WARNING Explosion Hazard – Do not remove the clevis. Removing the clevis violates the warranty. Care should also be taken when rotating the clevis o

8 HFG2.0 USER GUIDE Vent Port The gas leakage rate through the vent port is less than 200 cm3/hr (air or N2 as test flow). The vent port features a 1

Figure 1-4. HFG2.0 Dimensions, 1-Piece Housing INSTALLING THE HFG2.0 9

10 HFG2.0 USER GUIDE Figure 1-5. HFG2.0 Mounting Orientations

Figure 1-6. HFG2.0 Mounting Provisions, 3-Piece Housing (Standard Mounting Orientation Shown) INSTALLING THE HFG2.0 11

12 HFG2.0 USER GUIDE Figure 1-7. HFG2.0 Mounting Provisions, 1-Piece Housing (Standard Mounting Orientation Shown)

Figure 1-8. HFG2.0 Mounting Provisions, 1-Piece Housing (Reversed Mounting Orientation Shown) INSTALLING THE HFG2.0 13

This manual provides installation, maintenance, and operating instructions for the HFG2.0 Gas Fuel Metering Valve. Every attempt has been made to pro

14 HFG2.0 USER GUIDE 1.4 Electrical Connections The HFG2.0 is suitable for use in hazardous locations. See the General Specification Summary in Sec

Figure 1-9: HFG2.0 System Power Wiring Diagram Figure 1-10. Typical Power Connection With Power Supply Figure 1-11. Typical Power Connectio

16 HFG2.0 USER GUIDE Note: A battery system is recommended for highest reliability. Note: If a 120 VDC power supply is used rather than a battery, e

Therefore, it is not possible to correctly state a single capacitance value that should be placed on the bus. It may require no added bus capacitanc

18 HFG2.0 USER GUIDE Signal Connections Signals are sent between the HFG2.0 and the user’s controller through the integral 17-wire signal harness. Se

Figure 1-12: HFG2.0 System Signal Wiring Diagram Note: For proper operation of the controller, the voltage between the control inputs and the neg

20 HFG2.0 USER GUIDE Analog Inputs The analog input, DEMAND, has a current range of 4 - 20 mA. It is electrically isolated up to 500 VAC from the enc

Discrete Outputs The discrete outputs are +24 VDC. They are electrically isolated up to 500 VAC. See Figure 1-16 for a typical discrete output alarm

22 HFG2.0 USER GUIDE FUNCTION Standard 9-Pin COM Port Standard 25-Pin COM Port Transmit (Tx). Pin 3 Pin 2 Receive (Rx) Pin 2 Pin 3 Ground (G

Recommended Wiring for System Signals The recommended wiring is a 17-conductor shielded cable containing twisted-pair wires with individual shields

TABLE OF CONTENTS Purpose of This Guide ...

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2 UNDERSTANDING THE HFG2.0 2.1 System Description The HFG2.0 is an electrically operated gas fuel-metering valve that requires only 120 VDC power,

26 HFG2.0 USER GUIDE 2.2 Electrical Description The electric actuator in the HFG2.0 incorporates digital motor control electronics (MCE). The MCE co

during the RESET command. To reset the HFG2.0, +24 VDC must be applied across the RESET wires for at least 0.5 seconds in order to reset the control

28 HFG2.0 USER GUIDE Figure 2-1. HFG2.0 Electronics System Block Diagram

Alarms The HFG2.0 provides two two-wire alarm signals via the integral 17-wire signal harness. The discrete alarm outputs are solid-state switches

30 HFG2.0 USER GUIDE Note: The MCE analog and discrete signal interfaces are electrically isolated. The serial communication interface is optically

monitor winding temperatures. The motor electrical power and thermistor wires pass through a conduit into the electronics housing. Motor Rotor The m

32 HFG2.0 USER GUIDE Extension Rod and Bearings The extension rod is threaded on the ball nut. As the ball nut translates, the extension rod moves in

Orifice Assembly The orifice assembly contains a set of poppets and orifice plates. Fuel flow is metered between the INLET port chamber and OUTLET p

ii HFG2.0 USER GUIDE Figure 1-11. Typical Power Connection With Battery...15 Figure 1-12: HFG2.

34 HFG2.0 USER GUIDE Figure 2-2. HFG2.0 Cut-Away View – Actuator Main Housing Assembly

Figure 2-3. HFG2.0 Cut-Away View (Partial) CH. 2: UNDERSTANDING THE HFG2.0 35

36 HFG2.0 USER GUIDE 2.4 Identification Plate A product identification plate is attached to the HFG2.0 housing assembly. Figure 2-4 shows a typical

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

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3 OPERATING THE HFG2.0 This section refers to the position of the actuator when describing operation of the HFG2.0 valve. The end of the actuator

40 HFG2.0 USER GUIDE this point, the HFG2.0 has no information about the position of the actuator extension shaft. When the HFG2.0 receives the RUN c

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

42 HFG2.0 USER GUIDE 3.4 Moving to Stop Position The Stop position is a fail-safe position that may be set anywhere between Home (zero position, Va

Full Span Position (Maximum Flow) The Full Span (Maximum Flow) position correlates to a DEMAND signal of 20 mA. The maximum Span possible for the HF

Purpose of This Guide This publication is designed to help the user install, operate, maintain and troubleshoot the HFG2.0 Gas Fuel Metering Valve.

44 HFG2.0 USER GUIDE A non-linear interpolation table can be created to define positioning at 16 discrete current levels in the DEMAND signal range,

3.7 Monitoring System Health The firmware program continuously monitors system health while the HFG2.0 is powered. If any of the health parameters

46 HFG2.0 USER GUIDE See Table 3-4 for a list of Over Temp conditions represented by the OVERTEMP alarm in earlier generations of the HFG. Fault F

Fault Type Low Alarm High Alarm Fault Enable Persist Time Auto Reset Output Driver Overcurrent N/A 1000 lbf Yes 10 Sec Yes Yes Tracking Erro

48 HFG2.0 USER GUIDE Fault Alarm Type Persist Time Fault Action Driver Over Current 10 Sec 1 Sec Driver current > Max Force equivalent

Fault Type Persist Time Fault Action Motor 10 Sec 1 Sec Motor temp > 130° C, Fault. . If fault exists and Motor temp > 135° C for 10 Sec,

50 HFG2.0 USER GUIDE 3.8 Changing Set-Up Parameters The HFG2.0 uses a number of variables to define its functionality. These variables are called S

PARAMETER DESCRIPTION FACTORY SETTING Part Number Describes part number of actuator model Per Drawing Actuator Type Describes type of actuator

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4 MAINTAINING THE HFG2.0 Under normal operation, the HFG2.0 requires no formal maintenance program. Regularly scheduled inspections should be perfo

iv HFG2.0 USER GUIDE What the User Should Know To install, operate and troubleshoot the HFG2.0, it is necessary for the user to have a fundamental un

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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 os

56 HFG2.0 USER GUIDE Symptom Probable Causes Corrective Action Valve Inoperative - FAULT alarm Power Wires not connected No or low 120 VDC power

Symptom Probable Causes Corrective Action RS232 Interface Inoperative Incorrect wiring No or low 120 VDC power COM1 not connected RESET or RU

58 HFG2.0 USER GUIDE Function Actuator Wire Colors Resistance Value DEMAND BRN and WHT/BRN 225Ω RUN VIO and WHT/VIO 4.7 KΩ RESET GRY and WHT/GRY

5.1 FAULT File The FAULT and OVERTEMP alarms are discrete outputs from the HFG2.0. The FAULT and OVERTEMP alarm circuits are closed in the normal

60 HFG2.0 USER GUIDE Watchdog expired The MCE watchdog timer continuously monitors the firmware program. Should the MCE firmware program stop functio

APPENDIX A: DECOMMISSIONING & DISPOSAL This section contains recommended HFG2.0 decommissioning and disposal practices. It is for permanent re

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APPENDIX B: GLOSSARY Term Definition RUN Command A discrete 24 VDC signal that enables the HFG2.0 actuator and valve to move. RESET Command A

1 INSTALLING THE HFG2.0 1.1 Before Beginning Inspection The HFG2.0 should be inspected immediately after unpacking. Check for dings or dents or a

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2 HFG2.0 USER GUIDE Electrical Noise Guidelines PECC has taken the following measures to reduce electrical noise with the HFG2.0: • High-voltage wir

1.2 General Specification Summary PARAMETER VALUE Power Input Voltage Range 80-160 VDC; 120 VDC nominal Maximum Current 20 A Typical Tra