Moog G123‑817‑006 Servo Valve Oscillator‑Demodulator Module

The Moog G123‑817‑006 is a DIN‑rail mounted oscillator‑demodulator module designed for Moog hydraulic servo‑valve position feedback signal conditioning. It generates excitation carrier signal for LVDT position sensors and demodulates feedback signals to produce DC position‑value output for closed‑loop hydraulic motion‑control systems.

This signal‑processing unit operates from 24VDC industrial power supply, provides adjustable frequency and phase‑offset settings via internal DIP switches. It converts AC LVDT feedback into stable DC analog signal for PLC and motion‑controller input. Widely used as aftermarket spare‑part for steel‑mill, test‑rig and aerospace‑test hydraulic‑control cabinet maintenance and retrofitting projects.

Main Specifications

• Brand: Moog; Model:G123‑817‑006; Type:LVDT Oscillator‑Demodulator Module
• Power Supply:22‑28VDC, typical current consumption 60mA no‑load, 160mA under load
• Configuration:Internal DIP‑switches for carrier‑frequency selection and phase‑lag adjustment
• Function:LVDT carrier‑signal generation, AC‑to‑DC demodulation, servo‑valve spool‑position signal conditioning, analog‑output driving
• Feature:DIN‑rail mounting, compact 22.5 mm width housing, EMC compliant, status‑indicator LED, conformal‑coated PCB option
• Mechanical:Dimensions 100 W × 108 H × 22.5 D mm; weight approx 127 g
• Operating Environment:0℃ ~ +40℃, 5%‑95% RH non‑condensing
• Certifications: CE, RoHS compliant for industrial hydraulic‑motion‑control automation applications

Core Functions

• Generate stable high‑frequency carrier excitation signal for LVDT spool‑position sensor inside Moog servo‑valve.
• Demodulate AC‑amplitude‑modulated feedback signal from LVDT and convert it into proportional DC analog position‑signal.
• Allow on‑site frequency and phase compensation adjustment via internal DIP‑switches to match different LVDT characteristics.
• Output conditioned DC position‑feedback signal to upper‑level motion‑controller to realize closed‑loop spool‑position control of hydraulic servo‑valve.
• Provide status‑LED indication for power‑supply and module working‑state for fast fault‑check during commissioning and maintenance work.
• Compact DIN‑rail installation simplifies integration inside hydraulic‑control cabinet for industrial test‑stand and metallurgical‑equipment applications.

Application Scenarios

• LVDT signal‑conditioning component for Moog servo‑valve hydraulic closed‑loop motion‑control systems.
• Critical spare‑part for metallurgical rolling‑mill, material‑test‑rig and aerospace‑component test‑stand hydraulic‑cabinet maintenance.
• Retrofit and spare replacement for legacy G123‑817‑006 oscillator‑demodulator hydraulic‑control‑system upgrade projects.
• Hydraulic cabinet overhaul, LVDT‑feedback‑loop debugging and faulty signal‑conditioning‑module replacement tasks.
• Spare‑parts inventory for hydraulic‑system integrators and industrial‑test‑equipment engineering contractors.
• Global aftermarket spare supply for technical teams maintaining Moog servo‑valve hydraulic‑automation hardware.