Woodward 5448-890 SPM-D10

2. Product Brief Introduction

• This unit is a dedicated digital synchronizing control module developed under Woodward SPM-D10 product lineage, built with embedded single-chip microprocessor core architecture, exclusively designed for three-phase AC synchronous generator sets equipped with Woodward or third-party compatible mechanical governors and automatic voltage regulators (AVR).
• It executes full automatic frequency, phase angle and terminal voltage matching between on-site generator output and grid busbar, outputs discrete or analog bias control signals to adjust genset speed and excitation voltage, completes single-circuit-breaker closed-loop synchronous paralleling operation for power generation equipment.
• The product integrates local HMI parameter configuration, real-time operational data display and field fault diagnosis functions, supporting both front-panel manual setup and remote parameter programming via Woodward official ToolKit software through USB communication port.

3. Complete Technical Specifications

3.1 Power Supply Specification

• Rated Operating Supply Voltage: 24 VDC (±25% tolerance, actual valid input range: 18 VDC ~ 32 VDC)
• Max Auxiliary DC Input Current: 0.3 A DC at rated 24VDC supply condition
• Maximum Overall Power Consumption: 10 W under full-load working status
• Digital Control Input Rated Voltage Range: 18 VAC/VDC ~ 250 VAC/VDC universal input

3.2 Voltage Measuring Input Spec

• Standard Rated Measuring Voltage Options: 57/100(120) VAC, 63/110 VAC, 230/400 VAC (user programmable selection)
• Max Allowable Measuring Input Voltage: 150 VAC (single phase); 300 VAC line-to-line
• Input Impedance for Voltage Channel: 0.174 MΩ / 0.21 MΩ (factory-calibrated two standard impedance grades)
• Temperature Coefficient of Measuring Circuit: 15 ppm/K fixed factory calibration value
• True RMS voltage sampling algorithm adopted to eliminate harmonic waveform measuring deviation

3.3 Relay Output Electrical Spec

• Relay Contact Max Switching Voltage: 250 VAC nominal upper limit
• Standard Contact Current Rating:
  1. Main control relay: 2.00 A DC @24VDC; 0.36 A DC @125VDC; 0.18 A DC @250VDC
  2. Pilot duty auxiliary relay:1.00 A DC @24VDC;0.22 A DC @125VDC;0.10 A DC @250VDC
• Overload current carrying coefficient: 1.6 × In (rated contact nominal current)

3.4 Ambient Environmental Spec

• Continuous Operating Ambient Temperature Range: -20 ℃ ~ +70 ℃ (standard grade); extended industrial grade: -40 ℃ ~ +85 ℃
• Storage Temperature Range: -45 ℃ ~ +90 ℃ non-operating condition
• Rated Applicable Grid Frequency: 50 Hz /60 Hz dual programmable fixed frequency grade
• Working Altitude Limit: ≤2000 meters above sea level without derating parameter

3.5 Physical Dimension Spec

• Overall Outer Dimension: 144 mm (Width) ×72 mm (Height) ×122 mm (Depth)
• Cabinet Panel Cutout Size for Installation: 138[+1.0] mm ×67[+0.7] mm strict DIN43700 standard size
• Net Product Weight: 550 g single unit without wiring accessories

4. Core Function Features

1. Three Core Synchronous Matching Function: Independent automatic matching of frequency slip, phase angle difference and terminal voltage deviation between generator and busbar; supports slip-frequency synchronization and fixed-phase lock synchronization two working modes.
2. Dual-Type Control Output Configuration:
   • Standard discrete output: Independent speed raise/lower relay output + independent voltage raise/lower relay output for conventional contact-type governor & AVR
   • XN modified version analog bias output: Multi-level configurable analog signals including ±1V,±3V,0~5V,0.5~4.5V,±10V,0~20mA,±20mA; optional 500Hz PWM speed bias output with adjustable amplitude
3. Multi-Mode Running Logic Control: Pre-set independent island operation mode, dead-bus breaker closing mode, synchronous check interlock mode, SPM-A compatible legacy operation mode totally four selectable system logic via discrete external digital input terminals.
4. On-site Visual Monitoring Configuration: Front-mounted dual-line LCD digital parameter display + independent LED array synchroscope indicator for real-time slip frequency and phase angle visual observation during commissioning.
5. Dual Channel Parameter Programming: Local parameter setup via front 3-key physical HMI operation; remote offline configuration via USB interface connecting PC with official Woodward ToolKit configuration software; full parameter set protected by user-defined access password to avoid unauthorized modification.
6. Built-in Synchronous Fault Monitoring: Real-time synchronous duration overtime monitoring, abnormal frequency/voltage interlock lockout to forbid mistaken breaker closing action under unqualified paralleling condition.
7. Two-phase Voltage Sampling Design: Adopts two-phase cross sampling circuit for generator and busbar voltage respectively to reduce three-phase unbalance measuring error impact.

5. Detailed Performance Parameters

• Maximum allowable synchronous closing slip frequency: User programmable from 0.05Hz~0.5Hz with 0.01Hz minimum adjusting step
• Allowable synchronous voltage deviation threshold: Adjustable range ±1%~±10% of rated nominal voltage
• Analog output resolution for speed/voltage bias: 0.02% full-scale output precision
• Internal MCU main processing clock frequency: Fixed industrial 32MHz core operating frequency
• Onboard nonvolatile memory capacity: 40KB EEPROM for permanent storage of all user configuration parameters without external backup power
• Response delay of control output after parameter deviation detection: ≤20ms closed-loop reaction time
• Total harmonic suppression ratio of RMS sampling circuit: ≥40dB against 2nd~25th order grid harmonic interference

6. Material Composition Details

6.1 Outer Enclosure Material

• Front panel: High-temperature resistant black ABS flame-retardant engineering plastic (UL94-V0 fire rating), matte anti-scratch insulating surface finish
• Rear casing & side housing: Reinforced black PC+ABS blended composite plastic with anti-aging additive, conforming DIN43700 industrial enclosure standard

6.2 Internal Core Component Material

• Main printed circuit board (PCB): FR-4 glass fiber epoxy substrate with full copper-clad layer, immersion gold contact terminal for component soldering
• Internal power supply circuit: Silicon rectifier diode + aluminum electrolytic capacitor + ferrite core isolation transformer
• Microprocessor core: Industrial grade CMOS single-chip microcontroller with wide-temperature working chip
• Terminal connection block: PA66 flame retardant nylon base + tin-plated copper conductive insert
• Display part: Industrial grade STN LCD screen with LED backlight and silicone rubber operation buttons

7. Structural Feature Description

1. Overall structure follows standard DIN43700 APRANORM instrument panel modular structure, integrated front display operation area + middle main control circuit layer + rear wiring terminal layered layout design.
2. Front section partition: Upper area for dual-line LCD display and LED synchroscope lamp array, lower area for three physical programming operation buttons, left side reserved discrete status indicator LED layout.
3. Rear terminal structure: Fixed screw-type wiring terminal strip with two specification wiring acceptance: 1.5mm² and 2.5mm² cross-section copper wire compatible, all terminals marked with standardized terminal numbering for wiring identification.
4. Internal cavity layout: Main control PCB fixed by plastic positioning support column, independent isolated cavity between power supply circuit and signal sampling circuit to eliminate electromagnetic cross-interference.
5. Pre-reserved rear-side USB configuration port hidden under detachable rubber dustproof plug for field programming access without dismantling unit housing.

8. Working Principle

1. Signal Sampling Stage: Two independent voltage measuring channels continuously collect real-time AC voltage waveform of generator terminal and grid busbar respectively; built-in True RMS sampling circuit converts analog AC signal into digital data after isolation filtering and A/D conversion and transmits to core microprocessor.
2. Parameter Calculation Stage: Internal MCU calculates real-time frequency value, frequency slip difference, phase angle deviation and effective voltage difference between two groups of sampled signals via embedded synchronization algorithm, compares calculated data with user pre-programmed synchronous threshold parameters stored in EEPROM.
3. Bias Signal Output Stage: When deviation exceeds set threshold, control logic drives corresponding discrete relay contact or analog output circuit to send raise/lower adjustment signal to genset speed governor and AVR; governor adjusts prime mover rotating speed, AVR modifies generator excitation voltage to narrow frequency, phase and voltage gap gradually.
4. Synchronous Closing Execution Stage: Once all three items (frequency, phase, voltage) fall within pre-set qualified synchronous range, internal closing permission relay outputs contact signal to drive external generator circuit breaker to complete grid paralleling action; if parameter exceeds allowable range in the whole matching process, interlock circuit locks closing output permanently until parameter returns to qualified scope.
5. Operation Monitoring Stage: Real-time calculated operational data is transmitted to front LCD screen for cyclic display; abnormal parameter triggers corresponding front panel fault indicator LED and locks related control output to protect genset from faulty paralleling damage.

9. Product Advantage Highlights

1. Ultra-wide compatibility: Matches all mainstream Woodward mechanical/electronic governors and global-brand third-party AVR products; discrete and dual analog output two optional control modes adapt to new-built and retrofit generator project requirements.
2. Strong anti-interference performance: Full isolation design for measuring input circuit and built-in True RMS sampling technology greatly reduces grid harmonic, surge voltage and electromagnetic field disturbance impact on synchronization precision.
3. Dual programming flexibility: Local HMI quick commissioning without auxiliary equipment + remote USB computer batch parameter configuration, convenient for multi-unit genset unified parameter setting in power station project.
4. Compact panel mounting design: Standard DIN size saves cabinet installation space, direct panel cutout mounting without extra fixed adapter bracket accessory.
5. High operational stability: Wide range DC power supply tolerance and wide working temperature range adapt to severe industrial and marine site unstable power and ambient temperature environment.
6. Maintenance-friendly design: Password-protected parameter storage prevents misoperation modification; front indicator lamp and LCD code display realize rapid on-site fault positioning without disassembling equipment.

10. Applicable Industry Scope

1. Land-based stationary power generation industry: Diesel genset power station, natural gas engine power plant, small steam turbine distributed power station, backup UPS emergency generator system for data center, hospital, large commercial building.
2. Marine power industry: Cargo vessel main generator parallel control, ship auxiliary power unit synchronous paralleling, offshore platform self-contained power station genset control system.
3. Petrochemical & Mining industry: Oilfield self-provided gas genset station, underground mine emergency power generator set synchronous control.
4. Renewable energy industry: Biogas engine generator set, small hydroelectric generator grid-connected synchronous matching control.
5. Industrial factory self-power supply: Heavy industry factory self-owned cogeneration genset parallel to local public power grid.

11. Model Series Classification

• Parent Product Series: SPM-D Full Synchronizer Series (SPM-D10 core sub-series)
• 5448-890 belongs to standard basic variant of SPM-D10 single breaker synchronizer sub-series; other existing SPM-D10 series variant codes include SPM-D1040B, SPM-D1040B/XN (XN for analog enhanced output version), SPM-D10-HJV (with extra mains overvoltage protection circuit variant).
• SPM-D2 series is dual-breaker extended product of SPM-D base lineage while 5448-890 SPM-D10 is limited to single circuit breaker synchronous control onlyWoodward.

12. Detailed Installation Requirements

1. Mounting Method: Mandatory front panel embedded mounting into standard industrial control cabinet panel according to specified 138×67mm cutout dimension; fixed by four built-in side elastic locking clips integrated on unit housing without extra fixing screws.
2. Cabinet Environmental Requirement: Installed inside IP54 or above rated sealed electrical control cabinet; avoid direct sunlight irradiation, rain splash, corrosive gas and conductive dust accumulation around installation position.
3. Wiring Specification Requirement:
   • Power supply wiring: Use ≥1.5mm² cross-section insulated copper wire, separate wiring channel from strong-current breaker control cable to avoid induced interference.
   • AC voltage measuring input wiring: Twisted pair shielded control cable, single end of shielding layer grounded at cabinet PE earth terminal, shield layer forbidden to connect with unit internal signal common point.
   • Relay output control wiring: 1.5~2.5mm² copper wire consistent with terminal block compatible specification, all wiring fastened with rated torque for screw terminals.
4. Space Clearance Requirement: Reserve ≥30mm free clearance behind unit rear terminal for wiring bending space; leave ≥15mm top and bottom clearance inside cabinet for heat dissipation air circulation.
5. Grounding Standard: Connect cabinet mounting metal plate to system protective earth via ≥4mm² green-yellow grounding wire to stabilize reference potential of whole control system.
6. Installation Position Limitation: Forbidden to install near high-power contactor, frequency converter and transformer high electromagnetic radiation equipment; keep ≥150mm safety distance from above interference source equipment.

13. Standard Use Precautions

1. Pre-power-on inspection: Confirm input DC supply voltage falls within 18~32VDC rated range before switching on unit power; verify measuring input AC voltage wiring correspondence between generator and busbar terminals to avoid reverse wiring damage of internal sampling circuit.
2. Parameter modification regulation: All synchronization threshold parameters can only be adjusted under genset no-load offline status; forbid online parameter revision during generator live grid-connected running process.
3. USB configuration operation: Only connect official Woodward ToolKit matching USB communication cable; non-certified third-party USB adapter is prohibited to access configuration port to prevent communication chip burnout.
4. Overvoltage protection: External surge absorption varistor must be configured on relay output terminal when output wire length exceeds 10 meters to suppress inductive back EMF damage to internal relay contact.
5. Storage precaution: Uninstalled spare unit shall be stored in dry constant-temperature warehouse within -10℃~+40℃ ambient range with original antistatic packaging intact; avoid long-term high-humidity environment storage causing PCB circuit corrosion.
6. Maintenance restriction: Non-Woodward certified maintenance technician is prohibited to disassemble unit outer casing and modify internal original circuit; internal PCB damage caused by unauthorized disassembly voids all product warranty.
7. Running monitoring: Periodically inspect front display LED status and terminal wiring tightness every three months during long-term continuous operation; clean dust accumulated on front panel surface with dry soft cloth only, no liquid cleaning agent contact allowed.