Description
Product Introduction
The MOOG G122-824-001 P-I Servo Amplifier is an electronic control module designed for closed-loop servo and proportional valve control applications. It provides selectable proportional (P), integral (I), or combined proportional-integral (P-I) control to regulate actuator response based on command and feedback signals.
Part of MOOG’s DIN-rail-mounted servo electronics family, the G122-824 series supports configurable voltage and current inputs, feedback signal conditioning, adjustable control gains, and selectable valve-drive outputs. Additional features include a feedback transducer excitation supply, an enable input, an in-position output, and an adjustable dither function.
This module is suitable for industrial hydraulic control, actuator positioning, and other applications requiring precise electronic control of compatible servo valves. Before replacement, verify the exact suffix, terminal assignments, internal switch settings, and output configuration, as related MOOG models may use different pinouts.

MOOG G122-824-001
Key Features
- ⚙️ Selectable P-I Control: Supports proportional, integral, or combined P-I operation.
- 🔌 Flexible Signal Inputs: Supports configurable voltage and current command signals.
- 🎚️ Adjustable Control Parameters: Front-panel adjustments for proportional gain, integral gain, feedback gain, and zero.
- 🔄 Closed-Loop Feedback: Supports feedback signal conditioning for servo-control applications.
- ⚡ Selectable Valve Drive: Configurable voltage or current output ranges.
- 📈 Dither Function: Fixed-frequency 200 Hz dither with adjustable level and selectable operation.
- 🟢 Status Indicators: Front-panel LEDs indicate supply, valve-drive direction, enable status, and in-position status.
- 🧰 DIN-Rail Mounting: Compact module for control-cabinet installation.
- 🏭 Industrial Applications: Suitable for compatible hydraulic servo valves and actuator-control systems.
Product Specifications
| Specification | Details |
|---|---|
| Brand | MOOG |
| Model | G122-824-001 |
| Series | G122-824 |
| Product Name | P-I Servo Amplifier |
| Product Type | Electronic Servo Amplifier |
| Control Modes | Proportional, Integral, or P-I |
| Supply Voltage | 24 V DC nominal; 22–28 V DC |
| Supply Current | Approximately 75 mA at 24 V DC with no load; varies with load |
| Input Signals | Configurable voltage and current inputs |
| Current Input | 4–20 mA on supported input channels |
| Feedback Input | Configurable 4–20 mA or voltage input |
| Selectable Output | ±10 V, or current ranges of ±5, ±10, ±20, ±30, and ±50 mA |
| Maximum Output Current | Up to ±100 mA with supported configuration |
| Dither Frequency | 200 Hz |
| Transducer Excitation | +10 V DC, up to 10 mA |
| Enable Input | 17–32 V DC; nominal +24 V DC |
| Mounting | DIN rail |
| Protection Rating | IP20 |
| Operating Temperature | 0 to +40°C |
| Dimensions | Approximately 100 × 108 × 45 mm (W × H × D) |
| Weight | Approximately 180 g |
| Place of Manufacture / Origin | United States listed in supplier information |
| Product Status | Confirm with seller |
| Country of Origin | United States listed in supplier information |
| Power Requirements | 24 V DC nominal |
| Discontinued | Current status not confirmed |
Frequently Asked Questions
Q1: What is the MOOG G122-824-001 used for?
A: It is used to process command and feedback signals and generate a suitable control output for compatible servo valves and actuator systems.
Q2: What does P-I mean?
A: P-I stands for proportional-integral control. Proportional action responds to the current error, while integral action helps reduce persistent error over time. The module allows the control mode to be selected for the application.
Q3: What power supply does this module require?
A: The G122-824 series datasheet specifies a nominal 24 V DC supply, with an operating range of 22–28 V DC. Confirm the individual module’s label and wiring documentation before powering it.
Q4: Does it support 4–20 mA signals?
A: Yes. The series supports 4–20 mA inputs on configurable channels and a 4–20 mA feedback option. Exact input selection depends on the module configuration and switch settings.
Q5: Can it drive a servo valve directly?
A: It can provide selectable voltage or current outputs for compatible valve-control applications. Confirm the valve’s electrical requirements, coil current, and wiring arrangement before connecting it.
Q6: Is the G122-824-001 interchangeable with the G122-829 series?
A: Do not assume direct interchangeability. Related models may have different terminal assignments, output capabilities, and control characteristics. Check the applicable datasheets and system wiring before substitution.
Q7: What should I verify before ordering?
A: Confirm the complete model number, physical condition, terminal labels, internal switch settings, supply requirements, and seller’s functional-test results.
Recommended Related MOOG Models
The following models are related to MOOG servo amplification, valve control, and motion-control applications. They are not all direct replacements for the G122-824-001.
- MOOG G122-824-002 — Related G122-824 P-I servo amplifier variant.
- MOOG G122-829A — P-I servo amplifier with a related control function.
- MOOG G122-829-001 — P-I servo amplifier in the G122 family.
- MOOG G122-202A — Servo control module for industrial control applications.
- MOOG G123-814 — Dual PWM amplifier.
- MOOG G123-815 — Buffer amplifier with selectable voltage or current output.
- MOOG G123-816 — Hex differential amplifier.
- MOOG G123-817 — Oscillator/demodulator module.
- MOOG G123-818 — Related servo electronics family; verify the exact configuration.
- MOOG D136-001-007 — Servo controller.
- MOOG D136-001-008 — Servo valve controller.
- MOOG D661-series — Servo valve family for compatible hydraulic control systems.
- MOOG D662-series — Servo valve family; confirm model-specific requirements.
- MOOG D633-series — Servo valve family for industrial hydraulic applications.
- MOOG G122-series — Servo amplifier family for configurable control applications.
Ordering Note
Please provide the full part number G122-824-001 when requesting a quotation. Confirm the model suffix, terminal arrangement, input/output configuration, operating condition, and test status. For replacement installations, match the amplifier to the connected servo valve and control system, and follow the manufacturer’s wiring and commissioning instructions.



