Description
ATOS E-ME-AC-05F
Technical Specifications:
- Power Supply: 24 VDC
- Max Power Consumption: 50 W
- Reference Input Signal: ±5 V voltage signal, 4–20 mA current signal optional
- Continuous Output Current: 2 A
- Peak Output Current: 3.3 A
- Signal Input Impedance: >50 kΩ for voltage input; 316 Ω for 4–20 mA current input
- Auxiliary Potentiometer Supply: +5 V / 50 mA and -5 V / 20 mA
- Adjustable Ramp Time: 0 to 5 seconds
- Operating Temperature: -20 °C to +70 °C
- Protection Class: IP20
- Dimensions: 100 mm × 60 mm × 40 mm
- Weight: 0.5 kg
Function Features:
- PWM current output to drive proportional valve solenoid with low ripple
- Adjustable gain, offset and ramp time for hydraulic system tuning
- Accept bipolar ±5V analog command signal from PLC or motion controller
- Built-in overcurrent, short circuit and reverse polarity protection
- Auxiliary ±5V power supply for external reference potentiometer
- Fast response time less than 1 ms for high dynamic hydraulic control
- Low noise circuit design with noise level below 10 uVpp
- DIN rail mounting for cabinet installation
Application Scenarios:
- CNC machine tool proportional hydraulic control
- Plastic injection molding machine hydraulic axis control
- Metal stamping and forming press hydraulic systems
- Material handling hydraulic proportional control
- Test bench hydraulic pressure and flow regulation
Material Composition:
- Housing: Black flame retardant plastic enclosure
- Main PCB: FR4 fiberglass printed circuit board with power drive and signal conditioning circuits
- Power Components: PWM power MOSFET, current sampling resistors
- Control Core: Analog operational amplifiers and reference voltage chips
- Terminals: Screw type copper terminals for power, input signal and valve wiring
Structural Features:
- Compact rectangular plastic enclosure designed for DIN rail clip mounting
- Screw terminal blocks located on one side for easy field wiring
- Small potentiometers on front panel for gain, offset and ramp adjustment
- Internal PCB fixed inside plastic housing with insulation barriers
- Ventilation slots on housing surface for heat dissipation
Working Principle: Analog command signal ±5V from upper controller enters amplifier input terminal. The analog circuit compares command signal with feedback current of proportional valve solenoid. PWM power circuit generates regulated current output to drive valve solenoid. Adjustable ramp circuit limits current change rate to avoid hydraulic shock. Built-in current sampling circuit monitors solenoid current in real time and forms closed current loop. Protection circuit cuts off output when short circuit or overcurrent fault occurs.
Installation Requirements:
- Mount amplifier on standard DIN rail inside electrical control cabinet
- Separate low level analog signal wiring from high power hydraulic valve wiring
- Use shielded twisted pair cable for command signal input
- Ensure cabinet ventilation to avoid overheating
- Keep wiring length between amplifier and proportional valve as short as possible
- Connect amplifier power ground reliably
Usage Notes:
- Adjust gain and offset potentiometer during commissioning to match valve characteristic
- Do not exceed maximum peak output current rating
- Avoid conductive dust accumulation inside plastic housing
- Disconnect 24 VDC power before opening housing or adjusting potentiometers
- Prevent oil contamination from entering amplifier enclosure
- Verify solenoid coil resistance matches amplifier output specification
