Woodward 9907-252 Installation And Operation Manual Download

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Installation and Operation Manual

Load Sharing Module

0.5–4.5 Vdc Output

9907-252

Manual 02035 (Revision B)

Summary of Contents for 9907-252

Page 1: ...Installation and Operation Manual Load Sharing Module 0 5 4 5 Vdc Output 9907 252 Manual 02035 Revision B...

Page 2: ...nce this copy was produced To verify that you have the latest revision be sure to check the Woodward website www woodward com pubs current pdf The revision level is shown at the bottom of the front co...

Page 3: ...SETUP AND CALIBRATION 11 Introduction 11 Phasing Check 12 Phase Correction Procedure 13 Load Gain Adjustment 16 Droop Adjustment 17 Setting Droop for an Isolated Load 17 Setting Droop for an Infinite...

Page 4: ...rials Wear cotton or cotton blend materials as much as possible because these do not store static electric charges as much as synthetics 3 Keep plastic vinyl and Styrofoam materials such as plastic or...

Page 5: ...ufactured by Woodward and engines controlled with Woodward electronic controls or controls using other Woodward load sharing modules Description The Load Sharing Module provides isochronous and droop...

Page 6: ...Load Sharing Module Manual 02035 2 Woodward Figure 1 2 Outline Drawing of Load Sharing Module...

Page 7: ...Manual 02035 Load Sharing Module Woodward 3 Figure 1 3 Block Diagram of Load Sharing Module...

Page 8: ...Load Sharing Module Manual 02035 4 Woodward...

Page 9: ...Manual 02035 Load Sharing Module Woodward 5 Figure 1 4 Plant Wiring Diagram of Load Sharing Module...

Page 10: ...these requirements when selecting the mounting location Adequate ventilation for cooling Space for servicing and repair Protection from direct exposure to water or to a condensation prone environment...

Page 11: ...ircuit breakers in each of the PT lines to limit current to the LSM PT inputs to no more than 5 A In addition a 2 A fast acting fuse or circuit breaker must be provided in the 24 Vdc power supply line...

Page 12: ...er insulation from both ends exposing the braided or spiral wrapped shield Do not cut the shield on the end nearest to the Load Sharing Module Cut off the shield on the end away from the unit 2 Use a...

Page 13: ...leads to the terminals the Load Sharing Module contains internal burden which must be connected across the power source current transformers whenever the unit is running Ammeters may be installed on t...

Page 14: ...t a 10 k 10 turn potentiometer to terminals 26 CW 27 wiper and 28 CCW Use 0 5 mm 20 AWG or larger shielded wire and connect the shield to the closest chassis screw Do not connect the potentiometer end...

Page 15: ...manufacturer s instructions Adjust the engine for rated speed Apply full load to the generator set The most accurate calibration is made at full load However if it is not possible to run the generator...

Page 16: ...the engine and apply full load to the generator set 12 Using a dc voltmeter measure the load signal at terminals 22 and 23 Adjust the load gain potentiometer to give a 6 Vdc load signal If 6 Vdc is n...

Page 17: ...completed all three CTs are connected to the proper CT inputs on the Load Sharing Module with the correct polarity and are now labeled with their correct designations The procedure for correcting phas...

Page 18: ...emergency shutdown when starting the engine turbine or other type of prime mover to protect against runaway or overspeed with possible personal injury loss of life or property damage 6 Start the engin...

Page 19: ...load 24 Measure the load signal voltage between terminals 22 and 23 and record this voltage 25 Shut down the generator set 26 Remove the phase A CT wires from terminal 8 and 9 and connect the wires to...

Page 20: ...et down and reverse the phase C wires on the CT input terminals 46 Start the engine and apply full load 47 Measure the load signal voltage between terminals 22 and 23 and record this voltage 48 Shut d...

Page 21: ...three volts in cases of extremely poor system dynamics Droop Adjustment Droop is usually expressed as a percentage Droop percentage is calculated by dividing the difference between the no load speed...

Page 22: ...entiometer fully clockwise for maximum droop 4 Synchronize the generator with the bus and parallel it with the bus 5 Increase the speed setting potentiometer to the position marked in step 2 increasin...

Page 23: ...sensor circuit senses current amplitude and produces a load signal proportional to the current amplitude times the power factor The potential input comes from potential transformers PTs and the curre...

Page 24: ...ed system with two or more generator sets paralleled if isochronous speed control is required one of the generator sets must be running in the isochronous constant speed mode This generator set mainta...

Page 25: ...eed while applying load If droop occurs near the full load point only it is possible the engine is not producing the horsepower called for or is being overloaded Faulty engine control Disconnect the L...

Page 26: ...e engine control or the engine Unequal speed settings Be sure the speed settings of all off line units at no load are identical Adjust as necessary Resynchronize Unequal load gain voltages Check that...

Page 27: ...nt system documentation for details Woodward Business Partner Support Woodward works with and supports a global network of independent business partners whose mission is to serve the users of Woodward...

Page 28: ...e of a scheduled outage to request a replacement control unit If the unit is available at the time of the call it can usually be shipped out within 24 hours You replace your field control unit with th...

Page 29: ...erials when returning a complete control protective caps on any connectors antistatic protective bags on all electronic modules packing materials that will not damage the surface of the unit at least...

Page 30: ...with which our products interface For information on these services please contact us via telephone email us or use our website and reference www woodward com support and then Customer Support How to...

Page 31: ...s steam etc Rating Application Control Governor Information Please list all Woodward governors actuators and electronic controls in your system Woodward Part Number and Revision Letter Control Descrip...

Page 32: ...op Switch The external droop switch is to be wired in series with the auxiliary circuit breaker contact between terminals 13 and 14 Droop mode is selected when either the droop switch or the auxiliary...

Page 33: ...lse Installation Overvoltage Category Category III Air Quality Pollution Degree 2 DIMENSIONS Linear maximum Length 273 6 mm 10 77 in Width 214 1 mm 8 43 in Height 59 2 mm 2 33 in Weight 1397 g 49 3 oz...

Page 34: ...Load Sharing Module Manual 02035 30 Woodward...

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Page 36: ...t Drake Road Fort Collins CO 80525 USA Phone 1 970 482 5811 Fax 1 970 498 3058 Email and Website www woodward com Woodward has company owned plants subsidiaries and branches as well as authorized dist...

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