Product Introduction
Why choose Woodward 9907-018
Woodward 9907-018 speed controller can be used with a range of Woodward devices, such as power automatic transferors, input and output controllers, generator load controllers, etc., to achieve more comprehensive system control. It can be used for diesel engines, gas engines, steam turbines, gas turbines, etc., suitable for power generation, ship power systems, oil and gas industries, industrial manufacturing, and other fields. It has two working modes: differential regulation and differential regulation. Differential regulation is used for constant speed control, which is suitable for single machine operation or multiple prime movers acting on an isolated power grid; differential regulation provides more control flexibility.
Technical Specifications
|
Brand |
WOODWARD |
|
Model |
9907-018 |
|
Description |
2301A Electronic Load Sharing and Speed Control |
| Working power supply | 20-40 V DC |
| Control output | 0-200 mA DC |
| Speed range | 500-1500,1000-3000,2000-6000,4000-12000 Hz |
| Operating temperature | -40 °C to +85 °C |
|
Origin |
USA |
|
Dimension |
35*30*20cm |
|
Weight |
1.25kg |
Product Details
Power Supply Voltage:
These Woodward 2301A 9907-018 controls require a voltage source of 18 to 40 Vdc, 90 to 150 Vdc, or 88 to 132 Vac for operating power (15 W). If a battery is used for operating power, an alternator or other battery charging device is necessary to maintain a stable supply voltage.
The speed and load sharing section of these 2301A 9907-018 models monitors and controls two functions.
Speed-The speed control section keeps the prime mover at the correct speed.
Load Sharing-During parallel operation of two or more generators, the load sharing section senses the load carried by its generator. It causes the loads of all generators in the system to be shared proportionally.
Speed Control:
The Speed Control 9907-018 as shown in consists of: a device (1) to sense the speed of the prime mover a Frequency to Voltage Converter (2) a Speed Reference (3) to which the prime mover speed can be compared A Speed Summer/Amplifier (4) with an output proportional to the amount of fuel or steam required to maintain the desired speed at any given load An Actuator (5) to position the fuel or steam mechanism of the prime mover.
A speed-sensing device, such as a magnetic pickup, senses the speed of the prime mover and converts it to an AC signal with a frequency proportional to prime-mover speed. The frequency-to-voltage converter receives the AC signal from the speed sensor and changes it to a proportional DC voltage.
Location Considerations:
This product is intended for installation in a "closed electrical operating area" or a closed industrial control cabinet. Consider these requirements when selecting the mounting location:
Adequate ventilation for cooling
Space for servicing and repair
Protection from direct exposure to water or to a condensation-prone environment
Protection from high-voltage or high-current devices, or devices that produce electromagnetic interference
Avoidance of vibration
Selection of a location that will provide an operating temperature range of –40 to +70 °C (–40 to +158 °F)
The control must NOT be mounted on the engine.
Key points for debugging and calibration operations
Check the basic connection
Confirm all terminals:
Power supply;
Output of the actuator;
Speed sensor;
CT (Current Transformer)
Potential input (PT, such as for synchronization or other external signals);
All should be connected according to the manual, and ensure that the shielding and ground wire are correctly configured.
Check the power supply stabilization and regulation.
Check the valid signal of the speed sensor.
Make sure that all mechanical connections (such as the actuators and the engine) are well lubricated and free from any jamming.
Power-on and static test
After powering on, verify the output value of the actuator.
Set the rotational speed potentiometer to the target value.
Monitor the feedback from the speed sensor and the internal response of the controller.
Dynamic testing
Gradually increase the load while the system is in an unloaded state.
Observe the variation of the shared load voltage (0 - 6 V);
Adjust the Gain, Compensation and other front panel adjustment knobs to ensure a stable and smooth response without overshoot.
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Pattern verification
Verify by connecting or disconnecting the drooping connection (with the auxiliary contacts of the generator circuit breaker):
Is the constant speed mode designed to maintain a constant speed?
Does the drooping mode respond to changes in load?
Does the parallel load-sharing function operate proportionally?
FAQ
Q: Voltage requirements for using 9907-018
A: DC version (20-40 V DC)
Q: Before purchasing item 9907-018, it is necessary to understand the services provided by the supplier for this product.
A: Does it include return and exchange services?
Does it offer a warranty period?
Do you support technical support or on-site support?
Q: Do additional modules or complementary components need to be provided?
A: In practical applications, it may also be necessary:
The synchronizer module (such as Woodward SPM-A) is used for unit synchronization.
CT/PT sampling loop;
Actuator wiring adapter or high-precision sensor.
When making the purchase, it is necessary to confirm whether the entire system is complete.