Digital guide
You are here:
AEG AS-BDA0-21 Digital-to-Analog Conversion Module
- Product Introduction: This is a high-precision digital-to-analog (D/A) conversion module of the AEG Modicon series, designed for industrial control systems that require the conversion of digital signals to standard analog signals. It can convert the digital signals from various industrial controllers (PLC, DCS, industrial computer) into standard 4-20 mA current signals, and is a key interface module for realizing the connection between digital control systems and analog field actuators.
- Technical Specifications:
- Conversion Channels: 1 independent D/A conversion channel, dedicated to 4-20 mA current signal output.
- Input Digital Signal: 12-bit binary parallel digital signal, compatible with TTL/CMOS level.
- Output Analog Signal: 4-20 mA DC current signal, load capacity ≤500 Ω.
- Conversion Resolution: 12 bits; Conversion Accuracy: ±0.05% of full scale at 25°C, ±0.1% over the entire operating temperature range.
- Conversion Time: ≤50 μs; Signal Drift: ≤50 ppm/°C (temperature drift), ≤0.01% FS/year (time drift).
- Isolation: 2500 VAC isolation between input and output, between output and power supply.
Detailed content
-
- Power Supply: 24 VDC, power consumption of 1 W.
- Operating Temperature: -25°C to +70°C; Storage Temperature: -40°C to +85°C.
- Protection Rating: IP20; Dimensions: 40mm × 160mm × 50mm (W×H×D); Weight: 0.2 kg.
- Mounting: Standard 35mm DIN rail mounting, plug-in connection for signal and power supply.
- Functional Features:
- 12-bit high-precision D/A conversion ensures the high accuracy and linearity of the output analog signal, and the low temperature drift and time drift ensure the long-term stability of the signal, suitable for high-precision industrial process control.
- The dedicated 4-20 mA current signal output is the standard analog signal in the industrial field, which has strong anti-interference performance in long-distance transmission and is suitable for the signal transmission between the central control system and the on-site actuator.
- The 2500 VAC high-voltage isolation between input and output effectively isolates the digital control system and the analog field circuit, preventing the high voltage and interference of the field from entering the control system and ensuring the safety of the control system.
- The ultra-fast conversion time of ≤50 μs ensures the real-time performance of signal conversion, which is suitable for industrial control systems that require fast response to analog signals.
- The module has a compact structure and small size, which does not occupy additional installation space of the industrial control cabinet, and the DIN rail mounting design is convenient for on-site installation and wiring.
- Built-in output short-circuit and overcurrent protection functions, which can automatically limit the output current when the load is short-circuited to protect the module and field actuators from damage.
- The input digital signal is compatible with TTL/CMOS level, which can be directly connected with the digital output port of various industrial controllers such as PLC and DCS without additional signal conversion circuits.
- The module has a built-in zero and span calibration potentiometer, which can realize on-site manual calibration of the output signal, ensuring the accuracy of the output signal after long-term use.
- The rugged industrial design and wide operating temperature range allow the module to work stably in harsh industrial environments such as high temperature, low temperature and high electromagnetic interference.
- Application Scenarios: Widely used in industrial control systems that require digital-to-analog signal conversion, such as the connection between the digital control system and electric regulating valves, frequency converters, servo drivers and other analog actuators in petrochemical, power, metallurgy, water treatment and other industries. It is especially suitable for industrial occasions that require long-distance transmission of analog signals and high-precision control, such as pipeline medium flow control, motor speed regulation, and industrial furnace temperature control, and can also be used in the signal conversion of various industrial measurement and control instruments and equipment.
