PRODUCT INFORMATION
Product Overview
The Woodward 9907-005 MSLC Woodward Master Synchronizer and Load Control coordinates three-phase electric power generation sites. This microprocessor-based load control functions with Woodward DSLC units across interconnecting switchgear tie breakers. The device provides phase matching synchronizing and slip frequency synchronizing. It monitors voltage and frequency across utility and bus inputs.
Part number 9907-005 features a 3-wire delta sensing configuration rated for 120 VAC nominal input. The unit operates on continuous control power from 12 to 40 VDC. It tolerates temporary voltage ranges from 7 to 77 VDC for up to 5 minutes. Network communication occurs over Echelon LonWorks, and local calibration uses an RS-422 diagnostic port.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Sensing configuration | 3-wire delta |
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| Nominal voltage variant | 120 V |
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| Continuous control power | 12–40 VDC |
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| Temporary supply range | 7–77 VDC for up to 5 minutes |
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| Reverse supply tolerance | +56 VDC continuous |
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| Power burden | 18 W |
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| Voltage sensing | 75–150 VAC RMS for 120 VAC input; three phases |
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| Measurement frequency | 45–66 Hz |
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| Voltage input burden | Below 0.1 VA per phase |
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| Voltage accuracy | 0.1% full scale |
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| Current input | 0–5 A RMS |
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| Discrete input | 12–40 VDC, 10 mA nominal |
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| Relay driver | 12–40 VDC, 200 mA sink maximum |
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| Analog input | 4–20 mA or 1–5 VDC |
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| Communications | Echelon LonWorks and RS-422 calibration/diagnostics port |
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| Temperature | Operating -40 to +70 °C; storage -55 to +105 °C |
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TECHNICAL INFORMATION
Features
- Provides 3-wire delta 120 VAC voltage sensing for three-phase power systems.
- Communicates with Woodward DSLC units via an Echelon LonWorks network.
- Supports both phase matching synchronizing and slip frequency synchronizing modes.
- Accepts continuous control power inputs from 12 to 40 VDC.
- Maintains measurement accuracy within 0.1 percent of full scale.
- Includes an RS-422 serial communications port for diagnostics and calibration.
- Provides discrete inputs and sinking relay driver outputs rated to 40 VDC.
TECHNICAL INFORMATION
Applications
- Three-phase electric power generation plants using Woodward DSLC controls.
- Automatic synchronization and load management across utility tie circuit breakers.
- Generator switchgear systems configured with 120 VAC 3-wire delta potential transformers.
TECHNICAL INFORMATION
Connections / Interfaces
- Potential transformer terminals accept 3-wire delta inputs from 75 to 150 VAC RMS.
- Current transformer inputs accommodate three phases at 0 to 5 A RMS.
- Echelon LonWorks network port connects distributed DSLC controllers.
- Serial RS-422 port links to the 9907-205 hand-held programmer.
- Discrete input terminals receive 12 to 40 VDC logic signals.
- Relay driver outputs provide sinking control current up to 200 mA.
TECHNICAL INFORMATION
Installation Guidelines
- Install the unit in an environment with operating temperatures from -40 to +70 °C.
- Maintain wiring separation in accordance with plant electrical codes.
- Connect 12 to 40 VDC continuous control power to the specified power supply terminals.
- Verify that potential transformer wiring matches the 3-wire delta 120 V configuration.
- Ground the control enclosure according to Woodward manual 02022 instructions.
TECHNICAL INFORMATION
Configuration Guidelines
- Connect the Woodward 9907-205 hand-held programmer to the RS-422 calibration port.
- Set the voltage input to 120 VAC in Configuration Menu 5.
- Enter the potential transformer winding ratio and current transformer rating in Menu 5.
- Select the system operating frequency as 50 Hz or 60 Hz.
- Adjust synchronizer gain and stability set points during phase matching setup.
- Calibrate synchroscope readings in Menu 6 if line-to-neutral potential transformers are used.
- Set breaker closure delay and hold time to match breaker specifications.
TECHNICAL INFORMATION
Compatibility
- Coordinates directly with Woodward DSLC load control devices over LonWorks.
- Connects to the Woodward 9907-205 hand-held programmer for configuration and tuning.
TECHNICAL INFORMATION
Lifecycle / Replacement Information
- Part number 9907-005 designates the 3-wire delta 120 V MSLC model.
- The 9907-004 unit provides 4-wire wye voltage sensing.
- The 9907-006 unit provides 3-wire delta 240 V voltage sensing.
TECHNICAL INFORMATION
Compliance and Certifications
- Mechanical shock evaluated under US MIL-STD-810C Method 516.2.
- Electrical transient testing conforms to ANSI C37.90.1-1989 standards.
- Electromagnetic susceptibility tested in accordance with ANSI/IEEE C37.90.2.
- Electrostatic discharge withstand rated to 6000 Volts.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCoordinates directly with Woodward DSLC load control devices over LonWorks. Connects to the Woodward 9907-205 hand-held programmer for configuration and tuning.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the primary function of the Woodward 9907-005?
It manages automatic synchronization and load control across utility tie breakers. It coordinates with Woodward DSLC controls.
What voltage sensing configuration does part number 9907-005 use?
The 9907-005 uses a 3-wire delta configuration for 120 VAC nominal sensing. Input range is 75 to 150 VAC.
What are the control power supply requirements for the 9907-005?
The unit requires continuous 12 to 40 VDC power. It withstands 7 to 77 VDC for up to 5 minutes.
What is the reference market price for the Woodward 9907-005?
Observed market reference pricing is around $965 USD. Pricing figures are indicative market reference pricing only and are not a final quotation.
