Description
The Woodward 8272-582 is an Advanced Permanent Magnet (APM) motor control module engineered to provide regulated speed adjustment for Woodward 24 V DC permanent magnet motors. Accepting a broad universal input power range (100–220 V AC or DC), the unit rectifies and scales incoming voltage down to a variable DC output (typically 10–24 V DC) used to govern motor velocity. This controller ensures consistent shaft speed even under fluctuating mechanical load conditions, making it an essential component for governor actuator drives, valve positioners, and marine/industrial engine regulation sub-systems.
Commercial Availability & Procurement Terms
- Condition: New Original (Factory Sealed Surplus) or Refurbished (Fully Bench Tested)
- Warranty: 12-Month Functional Warranty
- Availability: In Stock
- Standard Lead Time: Ships within 1–2 business days via global couriers (DHL, FedEx, UPS)
- Pricing Policy: Indicative pricing only. Final transaction costs depend on specialized maritime/industrial certifications and current component allocation baselines. Contact our sales department for a formal, time-bound quote.
Technical Specifications
| Parameter | Specification / Value |
| Model / Part Number | 8272-582 |
| Manufacturer | Woodward |
| Module Type | Advanced Permanent Magnet (APM) Motor Control |
| Universal Input Voltage | 100 to 220 V AC / V DC (Multi-source compatible) |
| Regulated Output Voltage | 10 to 24 V DC (Variable, load-compensated) |
| Output Type | Direct Current (DC) tailored for 24 V DC PM Motors |
| Speed Adjustment Mechanism | Integrated potentiometer for tuning rate-of-change thresholds |
| Dimensions | 2.2 cm \times 12.4 cm \times 12.6 cm |
| Unit Weight | 0.10 kg (0.22 lb) |
| Country of Origin | United States |
Deployment Constraints & Engineering Notes
1. Mandatory DPDT Switch Requirements
The internal circuitry of the 8272-582 regulates output voltage amplitude to control speed, but it does not feature integrated electronic phase inversion for direction changes.
Field Warning: To reverse the rotational direction of the connected permanent magnet motor, you must install a external double-pole, double-throw (DPDT) hardware switch or an equivalent interlocked relay matrix on the output line. Attempting to reverse motor rotation by hot-swapping or crossing output wires while the module is actively energized can cause inductive voltage spikes that may destroy the internal output transistors.
2. Rotational Direction Verification
The core direction profile must match the design specifications of the governing actuator or engine throttle assembly (e.g., clockwise or counter-clockwise to shut down). Before connecting the mechanical output linkage to the engine fuel rack or valve stem, execute a localized test run. If the motor turns in reverse relative to command parameters, isolate input power and cross the primary DC leads exiting the APM control module to correct the default trajectory.
3. Load Compensation Tuning
The 8272-582 is designed to keep motor velocity constant even when the load envelope of the actuator system changes. Use the onboard, multi-turn adjustment potentiometer to set the motor speed rate-of-change. Avoid aggressive step-change configurations in applications with high mechanical stiction, as rapid voltage swings under load can lead to hunting, actuator overshoot, or overcurrent protection trips.
Frequently Asked Questions
Can the 8272-582 be powered directly by standard industrial 24 V DC batteries?
No. The input circuit of the 8272-582 requires a high-voltage baseline between 100 and 220 V AC or DC to function correctly. If your system relies purely on a low-voltage 24 V DC battery bank, you must step up the supply line or utilize a different Woodward driver module variant rated for low-voltage DC inputs.
What causes the permanent magnet motor to bog down under load while using this module?
If the motor stalls or drops velocity when load is applied, the load-compensation loop may require adjustment via the integrated potentiometer, or the incoming source voltage is dropping below the 100 V threshold. Verify input stability with a digital multimeter under active operating conditions.
Is this controller compatible with brushless DC (BLDC) motors?
No. The 8272-582 is designed explicitly for brushed, 2-wire permanent magnet DC motors. Brushless motors require specialized multi-phase electronic commutation controllers (typically 3-wire stator outputs with Hall-effect sensor feedback paths) which are not supported by this architecture.
