MOOG G123-825-001 DIN rail buffer amplifier

MOOG G123-825-001 DIN rail buffer amplifier

Moog G123-825-001 is a compact DIN rail mounted buffer amplifier designed to address signal compatibility issues between PLC/servo amplifiers and Moog servo/proportional valves. It requires a 24VDC power supply (22-28V compatible) and supports three input signals: 4-20mA, 0- ± 10V, and 0- ± 100mA. Multiple output signals, including 4-20mA, 0- ± 10V, and 0- ± 5 to ± 100mA, can be selected through a switch (supporting output value superposition). It comes with a built-in 7/16/34/72/723Hz optional single pole active filter to remove noise and is equipped with Vv/Iv LED indicator lights and front-end test points for easy debugging. The protection level is IP20 and the working temperature is 0-40 ° C. It is widely used for replacing old and new valves. (MFB to EFB) and industrial servo valve control scenarios.

Product basic information

Product positioning: Moog G123-825-001 is a buffer amplifier designed specifically for industrial servo systems. Its core function is to build a signal bridge between PLC/servo amplifiers and Moog servo valves and proportional valves, solving compatibility issues of different signal types. It also supports the replacement of old mechanical feedback (MFB) valves with modern electrical feedback (EFB) valves without the need to modify the original servo amplifier.

Certification and protection: CE certification (compliant with EN50081.1 emission standard, EN50082.2 immunity standard), C tick certification (compliant with AS4251.1 emission standard); Protection level IP20, suitable for the environment inside industrial control cabinets.

Delivery list: Buffer amplifier body, DIN rail fuse holder, 2 M205 250mA slow melting fuses, 4 pages of application instructions.

Core technical specifications

Specification category specific parameter remarks

Power supply parameters rated voltage: 24VDC; Voltage range: 22-28VDC

Static current: 65mA (without output)

Working current: 170mA (100mA output) Recommended fuse: M205 250mA slow melting (compliant with IEC 127-2 sheet 3)

Input signal current input: 4-20mA (terminals 4-8, 50 Ω impedance)

Voltage input: 0- ± 10V (terminal 3100k Ω impedance; Low Rin mode 1k Ω)

Other inputs: 0- ± 100mA (mfb signal) Low Rin mode selected through switch S2:5

Output signal voltage output: 0- ± 10V (minimum load 1k Ω)

Current output: 4-20mA (maximum load 500 Ω); 0- ± 5/10/20/30/50mA (stackable, maximum ± 100mA) Output stacking example: 30mA+50mA=± 80mA full-scale output

Filter characteristic type: unipolar active filter

Cut off frequencies: 7Hz, 16Hz, 34Hz, 72Hz, 723Hz (± 10%)

Time constants: 22mS, 10mS, 4.7mS, 2.2mS, 0.22mS can be selected through switches S2:6-S2:10

Physical and environmental dimensions: 100mm (width) x 108mm (height) x 22.5mm (depth)

Weight: 120g (4.2oz)

Working temperature: 0-40 ° C (32-104 ° F)

Installation method: 35mm standard DIN rail-

Auxiliary Function Test Point: Valve Drive Signal Test Point (Zo=10k Ω)

LED indicator light: Vs (power OK, green); Vv (voltage output, red+green -); Iv (current output, red+green -) Vv lamp has maximum brightness at ± 10V; Iv lamp has maximum brightness at ± 5mA - ± 100mA

Other parameters ± 15V output: Terminal 12/16, maximum current=110mA - maximum valve current

Terminal 10 maximum current: 500mA (cannot supply power to DDV valve) If Terminal 10 supplies power to a proportional valve, the power fuse needs to be increased

Core functions and application scenarios

core functionality

Signal adaptation and conversion: Supports flexible switching between three input signals and multiple output signals, covering the signal requirements of most Moog servo/proportional valves, and solving the problem of signal incompatibility between PLC/servo amplifiers and valves.

MFB to EFB upgrade: It can convert the current output of the original servo amplifier into an EFB valve compatible signal, achieving seamless replacement of old MFB valves without the need to modify the original control system.

Noise filtering: Equipped with a multi level single pole active filter, the appropriate cut-off frequency can be selected according to the on-site environment, effectively removing interference noise from the input signal and ensuring valve control accuracy.

Convenient debugging and monitoring: The front-end panel is equipped with test points and status LED indicators, which can quickly determine the power status, output signal polarity and amplitude, simplifying the system debugging and troubleshooting process.

Typical application scenarios

Adaptation of signal interface between PLC and Moog servo valve in industrial automation production line;

Upgrade old equipment and replace mechanical feedback (MFB) valves with electrical feedback (EFB) valves;

Servo valve control in high noise environments, optimizing signal quality through filters;

In a control cabinet with limited space, a compact layout is achieved using DIN rail installation characteristics.

Installation and wiring precautions

Installation requirements: It needs to be installed on a 35mm standard DIN rail to ensure a secure installation and avoid vibration affecting equipment stability;

Power supply protection: Recommended specifications of slow melting fuses must be equipped to prevent overcurrent damage to equipment; If the valve is powered through terminal 10, the fuse specification should be increased according to the valve current;

Wiring specification: The cable shielding layer should be connected to the cable sealing sleeve of the shell to reduce electromagnetic interference; Strictly distinguish input, output, and power terminals according to the wiring diagram to avoid equipment failure caused by reverse connection;

Resistance configuration: R21 and R25 on the PCB are 1/4W plug-in resistors used to select the MFB input current. The default value is 390K and can be replaced according to actual needs.