Description
I. Product Overview
MOOG M128-010-A001B is a high-performance analog electro-hydraulic servo amplifier board of MOOG GII series, specially matched with MOOG servo valves. It converts ±10V analog control commands into stable drive current for servo valve torque motors to realize closed-loop precise control of hydraulic position, speed and pressure. The suffix A001B represents the factory preset parameter version with standardized PID gain, filter coefficient and output current range, supporting direct plug-and-play replacement of legacy modules without complicated parameter resetting.
II. Hardware Structure and Composition
1. High-precision Command Signal Conditioning Unit
Differential ±10V analog input effectively suppresses common-mode interference, equipped with multi-stage low-pass filter to eliminate high-frequency clutter and servo valve jitter. Compatible with LVDT, resolver and encoder feedback signals to form full closed-loop control with micron-level positioning accuracy. Local potentiometers support zero and gain fine calibration for convenient on-site commissioning.
2. Servo Valve Drive & Current Closed-loop Unit
The built-in high-precision current sampling closed-loop circuit ensures stable output current independent of supply voltage and coil temperature drift. Freewheeling and reverse voltage suppression circuits protect power devices from inductive load impact. The A001B version is pre-calibrated with standard drive parameters to maintain consistent dynamic characteristics after equipment replacement.
3. Status & Fault Diagnosis Indication Unit
Front panel LED indicators display power, enable and fault alarm status. The module real-time monitors overcurrent, overtemperature and feedback disconnection faults, immediately cuts off drive output and locks alarm signals, and supports remote fault signal upload to upper control system for rapid fault location.
4. Isolated Wide-range Power Supply Unit
24VDC wide-range input (18～30VDC) with isolated DC-DC conversion and multi-level protections against overvoltage, undervoltage, reverse connection and surge. Fanless aluminum passive heat dissipation eliminates vulnerable moving parts for long-term stable operation in enclosed control cabinets.
5. Standard 3U Rack Mounting Unit
European standard 3U plug-in structure with unified mounting dimension and pin definition for M128 series modules. Strong and weak current terminals are physically separated to reduce crosstalk, supporting fast in-situ replacement to shorten equipment maintenance downtime.
III. Technical Specifications
(1) Electrical Parameters
- Power Supply: 24VDC, 18～30VDC wide range, typical power consumption ≤10W
- Control Command: Differential ±10V input, input impedance ≥100kΩ, single-ended/differential wiring optional
- Drive Mode: Current closed-loop servo valve coil drive, factory standard range for A001B
- Feedback Interface: Compatible with LVDT, resolver, incremental encoder, 16-bit sampling resolution
- Adjustment: Local zero and gain potentiometer, multi-stage configurable low-pass filter
- Protection: Short-circuit, overcurrent, overtemperature, feedback break hardware protection
- Debug Interface: RS232 for parameter tuning and real-time curve monitoring via official software
(2) Environmental Parameters
- Operating Temperature: -10℃～+60℃; Storage & Transportation Temperature: -40℃～+85℃
- Relative Humidity: 5%～95%RH, non-condensing, free of corrosive gas and conductive dust
- EMC Compliance: IEC 61000 Class A industrial electromagnetic compatibility standard
- Ingress Protection: IP20, indoor ventilated control cabinet installation only
(3) Mechanical Parameters
- Mounting: 3U standard industrial rack plug-in installation
- Dimension: 200mm×100mm×50mm
- Net Weight: Approx. 0.42kg
- Cooling: Aluminum fin passive natural heat dissipation
- Process: Three-proof conformal coated PCB, anti-vibration structure
- Origin: United States
IV. Product Functions and Features
1. Current Closed-loop Drive Eliminates Long-term Thermal Drift
Stable output current is not affected by coil temperature and grid fluctuation, avoiding positioning deviation and pressure drift of hydraulic equipment during long-time operation, meeting high-precision production and test process requirements.
2. Multi-stage Anti-interference Circuit Restrains Servo Vibration
Differential input and hardware filtering effectively eliminate industrial electromagnetic clutter, solving common faults such as servo valve high-frequency chattering and hydraulic system pressure oscillation, with convenient local calibration to shorten on-site commissioning cycle.
3. Full-loop Fault Protection Prevents Secondary Equipment Damage
Four types of fault protection cut off drive output instantly to protect the amplifier and servo valve from burnout, and realize safety interlock shutdown through remote fault signal upload to avoid mechanical collision accidents.
4. Pre-configured A001B Parameters Ensure Replacement Consistency
Factory standardized dynamic parameters realize seamless equipment replacement, avoiding system oscillation and overshoot risks caused by improper parameter debugging, greatly reducing renovation downtime.
5. Rugged Industrial Design Reduces Maintenance Frequency
Fanless aluminum housing and three-proof circuit adapt to harsh industrial environments with low routine maintenance workload, realizing 24/7 unattended stable operation of hydraulic servo equipment.
V. Application Scenarios
- Spare part replacement for electro-hydraulic servo tension and pressing control systems of metallurgical hot/cold rolling mills.
- High-precision hydraulic drive control for aerospace fatigue test benches and motion simulation platforms.
- Servo system hardware upgrading for CNC machine tools, injection molding and hydraulic forming equipment.
- Main hydraulic actuator control for shield machines and mining engineering machinery.
- Reliability optimization renovation for legacy MOOG servo systems with zero drift and frequent overcurrent faults.
