Woodward 9907-175 User manual

Installation and Operation Manual

Load Sharing Module

Pulse Width Modulated Output

9907-175, 9907-838

Manual 02036 (Revision F)

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Manual 02036 Load Sharing Module

Woodward

Chapter 1.

General Information

Introduction

The Woodward Load Sharing Module is made for use with Caterpillar engines

equipped with a Caterpillar digital speed control with a pulse width modulated

(PWM) input. The Load Sharing Module allows use of Woodward power

generation accessories and allows load sharing between the Caterpillar digital

speed control equipped engines and engines controlled with Woodward

electronic controls.

Part Number Power Supply PWM Output Surge Protection

9907-175 24 Vdc No

9907-838 24 Vdc Yes

Description

The Load Sharing Module provides isochronous and droop load-sharing

capability for engines equipped with Caterpillar digital controls in generator set

applications. Additional equipment in the control system can include the

Woodward SPM-A Synchronizer, Paralleling Phase Switch, Import/Export

Control, Precision Frequency Control, Automatic Generator Loading Control, and

Automatic Power Transfer and Loading Control.

Figure 1-1 shows a typical system using a Load Sharing Module.

Figure 1-1. Typical System Using a Load Sharing Module

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Load Sharing Module Manual 02036

Woodward

Figure 1-2. Outline Drawing of Load Sharing Module

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Manual 02036 Load Sharing Module

Woodward

Figure 1-3. Plant Wiring Diagram of Load Sharing Module

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Load Sharing Module Manual 02036

Woodward

Figure 1-4. Block Diagram of Load Sharing Module

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Installation and Operation Manual

SPM-A Synchronizer

Manual 82384 (Revision U)

25

Manual 82384 SPM-A Synchronizer

Woodward

Figure 1-1. Control Outline Drawing

26

SPM-A Synchronizer Manual 82384

Woodward

Figure 1-2. System Block Diagram

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Manual 82384 SPM-A Synchronizer

Woodward

Figure 1-3. Functional Block Diagram

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SPM-A Synchronizer Manual 82384

Woodward

Figure 1-4. Plant Wiring Diagram

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1

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