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MOOG Dual PWM Amplifier G123-814 Application Notes

From:MOOG | author:Mr.Chen | Time :2024-07-16 | 208 view: | Share:

Application Notes

Scope

These application notes are a guide to applying the G123-814 Dual PWM Amplifier.

They show you how to install, connect and adjust the PWM amplifier.

They do not cover how to select a proportional valve or how to design a closed-loop system.

Instructions

The G123-814 Dual PWM Amplifier is used to drive two coils of a three position 24V solenoid proportional valve.

It is designed for low-end closed-loop applications.

It allows the use of very low cost proportional valves where much more expensive servo valves would normally be required.

Using it with the companion servo amplifier G122-824 and a proportional valve produces an economical closed loop solution.

Applicability

The G123-814-001 has a closed loop configuration and is used with Hydrolux WP series proportional valves.

Important specifications considered include 24V @ 800mA coil and 12% spool overlap.

Output current is 25% higher than rated to ensure that maximum flow is not unduly

affected by valve production tolerances and spool Bernoulli forces.

Deadband compensation circuitry to eliminate spool overlap has been optimised

for flow bench and field applications. Deadband compensation is not user adjustable.

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