Product Overview
The Woodward 8408-921 is a high-performance single-channel exciter designed to drive electromagnetic actuators in industrial engine and turbine systems. It converts low-level control inputs into high-current output required to position fuel racks and throttle valves with precise and rapid response.
This unit is supplied as 100% brand new original equipment, ensuring zero-hour operation and factory-certified calibration for critical governing applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Driver Type | Single-channel high-current exciter |
| Input Signal | 4–20 mA, 0–5 VDC, PWM |
| Output | High-force excitation for ProAct and rotary actuators |
| Supply Voltage | 24 VDC (18–32 VDC range) |
| Response Time | <10 ms full stroke |
| Operating Temperature | -40°C to +70°C (-40°F to +158°F) |
| Mounting | Chassis or bulkhead mount |
| Enclosure | Anodized aluminum housing |
Engineering Advantages
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Fast Response: Sub-10 ms response minimizes throttle lag and improves engine stability during load changes.
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Actuator Protection: Built-in thermal monitoring prevents overheating and damage to connected actuators.
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EMI Isolation: Galvanic isolation reduces interference from ignition systems and high-voltage environments.
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Compact Design: Single-channel form factor allows flexible installation in space-constrained control cabinets.
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Field Calibration: Onboard potentiometers enable straightforward adjustment without external tools.
FAQs
Does it support brushless actuators?
No. It is designed for electromagnetic and ProAct series actuators requiring high-current DC excitation.
What happens if the command signal is lost?
The unit enters a failsafe mode that de-energizes the actuator, allowing it to return to the shutdown position.
Can it be mounted on the engine?
Direct mounting is possible, but vibration-isolated installation is recommended for longevity.
What is the product condition?
This unit is supplied as a 100% brand new original product, with factory packaging and no prior use.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
| A: You can reach out to us via email, WhatsApp, WeChat, Skype, or your preferred communication platform. Contact us with your needs, and we'll provide a prompt, customized quote. |
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