MOOG G122-824A002 PI SERVOAMP Servo Amplifier Drive

I. Model Basic Information
Brand: MOOG (World leader in electro-hydraulic servo systems)
Full model: G122-824A002, series name: G122 PI SERVOAMP
Product Positioning: DIN rail-mounted analog PI electro-hydraulic servo valve driver amplifier, serving as a closed-loop control unit between PLC/Controller and MOOG servo valve, achieving PID closed-loop regulation for position/pressure/flow
Appearance: Standard green DIN rail module, double-row European screw terminals at both front and back, panel with adjustment potentiometer, status LED, test points

 Core Functional Architecture
1. Control Algorithm (Hardware DIP switch selectable)
Pure P proportional control, pure I integral control, PI proportional-integral combined control, three modes switching
Built-in error summation circuit: two single-ended setpoints + one differential feedback signal superimposed to generate deviation value
Support for tremor (Dither) output, eliminating static friction jamming of servo valve spool
Integral limit, output current limit, differential feedback selectable functions
2. Signal Input Specifications (DIP switch switching signal type)
Setpoint input IN1/IN2: ±10VDC / 4–20mA universal
Differential feedback input: compatible with LVDT valve core displacement sensor, pressure/flow transducer
Enable Enable switch quantity: 24V passive contact, fault / emergency stop cuts off valve drive output
In-Position In-position switch output: relay contacts output after the closed-loop reaches the set range
3. Servo Valve Drive Output
Output type: current output (mainstream, compatible with MOOG two-stage servo valve torque motor) / voltage output selectable
Maximum drive current can be set by hardware jumpers, compatible with 0–100mA range servo valve coil
Built-in LVDT sensor excitation power supply output, directly powering the valve core displacement feedback probe

 Electrical Power Supply Parameters
Rated Power Supply: DC24V (allowable 22~28V wide voltage)
No-load power consumption: 75mA@24V; maximum full-load 200mA
Recommended front-end fuse: 250mA slow-melting T-type fuse
Terminal adapter cable: 0.2~2.5mm² (24AWG~12AWG) shielded wire

Panel Adjustable Parameters (Field-free software debugging)
Panel comes with potentiometer, quickly setting closed-loop parameters:
Gain: closed-loop proportional gain
Zero: zero point offset correction
I gain: integral strength adjustment
Bios: feedback bias compensation
Scale: setpoint signal range scaling
Panel LED indicator lights: feedback, tremor, in-position, enable, fault status indication, with voltage test needle points for convenient multimeter calibration

Environmental and Installation Specifications
Installation method: 35mm standard DIN rail snap-in installation
Operating temperature: -40℃ ~ +120℃
Protection: IP20 (in control cabinet), CE industrial certification
EMC: meets interference standards for heavy machinery, metallurgical rolling mills, power plant steam turbines
Size: compact narrow DIN rail module, multiple units can be densely installed side by side without interfering with heat dissipation

Typical Application Scenarios
Power plant / gas turbine steam turbine electro-hydraulic speed regulation system (compatible with MOOG two-stage servo valve control oil actuator)
Metallurgical cold and hot rolling mills, leveling machine roll gap hydraulic closed-loop control
Material fatigue test machine, impact test bench high-precision force control hydraulic system
Injection molding / die-casting machine precise hydraulic proportional control
Wind power pitch hydraulic servo, ship rudder electro-hydraulic control