Overview
The Woodward 8237-1369, also cataloged as the 8237-1369 ProTech-GII Overspeed Protection Device, operates as a dedicated hardware component for turbine speed monitoring and trip signal execution within overspeed protection systems. The unit processes speed input signals from magnetic pickups or proximity probes and initiates shutdown actions when configured overspeed limits occur.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 8237-1369 |
| Brand | Woodward |
| Origin | USA |
| Product Type | Overspeed Protection Device |
| Series | ProTech-GII |
| Weight | Approximately 23 lbs (10.4 kg) |
| Dimensions | 330 x 445 x 159 mm (13 x 17.5 x 6.25 inches) |
| Operating Temp | -20 deg C to +60 deg C |
| Storage Temp | -20 deg C to +65 deg C |
| Relative Humidity | Up to 95%, non-condensing |
| Power Consumption | High Voltage: 90 W at 90-150 VDC or Low Voltage: 100 W at 18-32 VDC |
| Enclosure Type | IP56 when correctly installed |
| Power Input | 88-264 VAC, 47-63 Hz or 18-32 VDC supply options |
| Speed Inputs | Magnetic Pickup (MPU) or Proximity Probe inputs |
| MPU Signal Range | 100-32,000 Hz, 1-35 Vrms |
| Proximity Probe Range | 0.5-25,000 Hz at 24 VDC |
| Gear Tooth Range | 1 to 320 teeth |
| Display Interface | 15-key local keypad and display module |
| Mounting Type | Bulkhead mounting or vertical flush panel mounting |
| EMC Compliance | EN61000-6-4 emissions and EN61000-6-2 immunity |
Actuator Loop Feedback Response and Overspeed Control
The Woodward ProTech-GII platform uses dedicated speed measurement channels to evaluate turbine rotational conditions. The 8237-1369 receives pulse frequency signals from MPUs or proximity probes and converts these inputs into speed calculations for trip logic processing.
The controller supports actuator loop feedback response monitoring by maintaining defined overspeed detection parameters between speed sensing circuits and turbine shutdown outputs. Therefore, the device provides direct electrical execution of trip commands through configured protection logic.
The system architecture supports turbine applications requiring continuous speed verification, rapid overspeed detection, and independent protection channel operation.
Frequently Asked Questions
Q: What type of speed sensors can connect to the Woodward 8237-1369?
A: The device supports magnetic pickup sensors and proximity probes. MPU inputs accept 100-32,000 Hz signals, while proximity probe inputs support 0.5-25,000 Hz operation at 24 VDC.
Q: Can the 8237-1369 operate with different power supply configurations?
A: Yes. The unit supports high voltage input options of 88-264 VAC or 90-150 VDC, and low voltage operation from 18-32 VDC with reverse polarity protection.
Q: What installation methods are supported for this overspeed protection device?
A: The unit supports bulkhead mounting on walls or skids and vertical flush mounting inside panels or cabinets.
Field Installation Guidelines
Install the Woodward 8237-1369 in a protected control enclosure that maintains the specified environmental conditions. Verify that the mounting structure provides mechanical support and prevents excessive vibration transfer.
Connect MPU and proximity probe wiring using shielded cables suitable for industrial speed measurement circuits. Ground cable shields according to site electrical standards and avoid routing sensor wiring parallel to high-current power conductors.
Confirm power supply polarity before energizing the unit, especially when using the 18-32 VDC input configuration. Check all terminal connections, sensor signal levels, and trip output wiring before placing the overspeed protection system into service.
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