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
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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
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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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Manual 82384 SPM-A Synchronizer
Woodward
Figure 2-1. Typical SPM-A Synchronizer Wiring
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SPM-A Synchronizer Manual 82384
Woodward
Figure 2-2. Synchronizing Bus to Bus
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