Summary of Contents for Woodward Digital Reference Units
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Installation and Operation Manual Digital Reference Unit with high, low, and intermediate setpoints Manual 82006 (Revision A)
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Revisions—Text changes are indicated by a black line alongside the text. Woodward Governor Company reserves the right to update any portion of this publication at any time. Information provided by Woodward Governor Company is believed to be correct and reliable. However, no responsibility is assumed by Woodward Governor Company unless otherwise expressly undertaken.
PCB from the control cabinet, place it in the antistatic protective bag. CAUTION—ELECTROSTATIC DISCHARGE To prevent damage to electronic components caused by improper handling, read and observe the precautions in Woodward manual 82715, Guide for Handling and Protection of Electronic Controls, Printed Circuit Boards, and Modules. Woodward...
Woodward Digital Reference Unit with three set points. Digital Reference Units Digital Reference Units use a precise linear ramp to provide a 0 to 8 volt reference signal to the attached control. The reference unit can be used with a speed or load control or a Process and Import/Export control.
Limit (Range), it is necessary to always set the Low Limit first and to reset the Range (High Limit) after any change in the Low Limit. The following step-by-step procedure should be followed any time the limits are set or reset. Woodward...
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When selecting two inputs at the same time, Set Point has priority over the Raise, and Lower has priority over the Set Point. If Raise is permanently closed, the unit will automatically go to the High Limit when neither Lower nor Set Point switches are closed. Woodward...
The ramp will stop should a selection be opened before the limit or set point has been reached. When Set Point is selected, the output will ramp up or down as necessary to reach the predetermined set point. Woodward...
Digital Reference Unit Manual 82006 Relays Some Digital Reference Units are equipped with three relays for use by the system operator. The relay contacts are 5 A resistive at 30 Vdc, or 2 A resistive at 115 Vac. External Reference...
Chapter 3. Applications The wiring diagrams in Figure 4-1 show some of the methods used to connect the reference unit to various electronic speed/load controls. Use of the unit is not limited to the installations shown. Figure 4-1. Wiring Applications Woodward...
Product Service Options The following factory options are available for servicing Woodward equipment, based on the standard Woodward Product and Service Warranty (5-01-1205) that is in effect at the time the product is purchased from Woodward or the service is performed: •...
Returning Equipment for Repair If a control (or any part of an electronic control) is to be returned to Woodward for repair, please contact Woodward in advance to obtain a Return Authorization Number. When shipping the item(s), attach a tag with the following information: •...
To expedite the repair process, contact Woodward in advance to obtain a Return Authorization Number, and arrange for issue of a purchase order for the item(s) to be repaired. No work can be started until a purchase order is received.
Manual 82006 Digital Reference Unit Engineering Services Woodward Industrial Controls Engineering Services offers the following after- sales support for Woodward products. For these services, you can contact us by telephone, by email, or through the Woodward website. • Technical Support •...
Type of Fuel (gas, gaseous, 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 Description or Governor Type Serial Number Woodward Part Number and Revision Letter...
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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 distributors and other authorized service and sales facilities throughout the world. Complete address / phone / fax / email information for all locations is available on our website.
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