I. Product Basic Definition
Integrated multi-channel digital electro-hydraulic servo amplifier / Closed-loop motion main control unit
MOOG 122 series high-end rack-mounted servo controller, different from the compact DIN rail-mounted G122-824-002 (single-channel simple PI analog amplifier board); N122 is a modular rack high-power digital model, specifically designed to drive MOOG two-stage electro-hydraulic servo valves, achieving high-precision hydraulic servo control of position, pressure, and force in three closed-loop systems, mainly used in high-end mechanical testing benches and aerospace loading systems.
Model Distinction: N122 VS G12 Table
Model Structural Form Type Drive Capacity Communication Applicable Scenarios
N122-824-002 Frame-mounted plug-in modular system Digital servo controller Continuous 8A, Peak 24A (1s) Ethernet, CANopen, Fiber bus, Multiple serial ports Multi-axis synchronization, aerospace mechanics loading, large hydraulic test bench
G122-824-002 Green DIN rail small module Analog PI simple amplifier Maximum 2A DC No bus, only ±10V analog signal Single-axis ordinary industrial hydraulic circuit, conventional regulating valve control
Core Hardware Interface Layout (Front Panel)
Communication Serial Port Area (4 channels DB9)
WCAN, SIO, MACS, FCSS optical high-speed synchronous bus: Networking of multiple controllers, multi-axis synchronous linkage
Ethernet RJ45 network port
Upper computer software parameter setting, program download, real-time data monitoring, remote debugging
Plug-in green terminal block (double-layer top and bottom)
Instruction setting: ±10V analog set input
Servo valve drive current output: Directly connected to servo valve coil
Feedback acquisition: LVDT displacement sensor, magnetostrictive displacement, pressure sensor differential signal
Digital IO: System enable, emergency stop, fault alarm output, ready point signal
Status LED indicator lights: Power, communication, fault, closed-loop operation, valve drive status indicator light
Key Electrical Performance Parameters Table
Parameter items Standard specifications
Power supply DC 24V industrial DC power supply
Output drive current Rated continuous: 8A RMS; Short-time peak: 24A (maximum 1 second)
Control closed-loop mode Position closed-loop / Speed closed-loop / Force (Pressure) closed-loop, supports PID full parameter adjustable
System dynamic response Closed-loop response time < 5ms, excellent high-frequency followability
Standard instruction input ±10V DC differential / single-ended analog instruction
Compatible feedback elements LVDT differential displacement sensor, magnetostrictive sensor, strain-type pressure sensor
Protection level IP20 (installed inside the control cabinet)
Operating environment temperature -10℃ ~ +50℃
Structural features Modular red-lock plug-and-play design, stackable rack installation, built-in cooling air duct
Core functional features
Digital fully adjustable parameters
Set gains, zero point, tremor (Dither), filtering, limit, etc. through MOOG’s dedicated debugging software. Also, local zero point and range adjustment can be done by panel-mounted potentiometers;
Complete fault self-diagnosis
Overcurrent, overvoltage, power supply under-voltage, servo valve break, feedback signal loss, overstroke, hardware fault alarms, with visualized fault codes;
Multi-protocol compatible control
Analog control + CANopen fieldbus + Ethernet TCP/IP multi-mode, can be connected to industrial computers, PLCs, motion control hosts;
Hardware safety circuit
Independent hardware enablement + emergency stop cut-off circuit, emergency conditions instantly cut off servo valve output, compliant with European and American equipment safety standards;
Anti-vibration and durable design
Circuit board reinforcement, component seismic selection, suitable for vehicle-mounted, shipboard, vibration test and other harsh conditions for long-term operation.
Mainly compatible equipment & application scenarios
Matching valve body
Full series of MOOG two-stage electro-hydraulic servo valves (G761, J761, 072 series high-frequency servo valves) Application fields
Aerospace: Aircraft structure fatigue tests, landing gear loading simulation, flight attitude simulation platform
Automotive industry: Chassis suspension durability tests, steering system loading, vehicle mechanical impact test bench
Mechanical materials: Universal material testing machine, tensile / compression / bending fatigue hydraulic loading equipment
Military industry, ship power simulation loading system
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