Moog G122-824-002

Product Name: Moog G122 Series Dual-Channel P-I Servo Amplifier / Servo Valve Driver, Model G122-824-002
Product Introduction: An industrial-grade analog servo amplifier designed to accept low-level command signals (±10 V or 4–20 mA) and feedback (±10 V or 4–20 mA), compute the error, apply proportional and integral gain, and output a current/voltage drive to electro-hydraulic servo valves or proportional valves. Used in closed-loop position/force/pressure control.

Category: MOOG

Description

Key Features:
- Configurable P, I, or P+I control modes via internal jumpers / potentiometers
- Two single-ended command inputs + one differential feedback input
- Adjustable proportional gain and integral time constant
- Enable input (24 V TTL/relay); dither (200 Hz fixed) to reduce stiction
- Short-circuit and over-current protection on output stage
- LED status indicators for Power, Enable, Fault
Performance Parameters:
- Power Supply: 22–28 VDC (nominal 24 VDC), internal ±15 V for logic
- Command Inputs: ±10 V (100 kΩ) or 4–20 mA (240 Ω selectable)
- Feedback Input: ±10 V diff or 4–20 mA diff
- Output: Current mode typical ±50 mA to ±100 mA (max drive sufficient for Moog D630/D660 small torque motors; check valve coil spec); Voltage mode ±10 V (min 200 Ω load)
- Gain Adjustment: P-gain 1–1000; I-gain 0–0.01 s⁻¹ (adjustable)
- Operating Temp: 0 °C to +50 °C (some G122 variants rated -40 °C to +70 °C)
- Mounting: DIN rail (TS35) or panel; Enclosure: metal, IP20
- Dimensions: approx. 100(W) × 108(H) × 45(D) mm; Weight ~180 g
Applications: Injection molding machines, material test rigs, fatigue test stands, flight simulators, wind turbine pitch control
Installation & Notes:
- Shield signal cables separately from power; ground amplifier chassis to panel earth
- Perform null (zero) adjustment with valve disconnected to prevent unintended actuator movement
- Verify servo valve coil resistance and required drive current before setting output range

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