-----Product Description
Produc ID:AAM21-S2
Warranty:12 Months
Shipping Port:Xiamen, China
Minimum Order Quantity: 1pc
Details：
The Yokogawa AAM21-S2 is a compact, high-reliability Analog Module designed for Yokogawa’s CENTUM VP Distributed Control System (DCS). It specializes in analog signal processing—supporting both input and output functions in specific configurations—to serve as a flexible interface between the DCS and industrial field devices (e.g., pressure transmitters, temperature sensors, control valves). It is widely used in process industries like petrochemicals, power generation, and pharmaceuticals, especially in applications requiring space-efficient module layouts.
-----Core Specifications
The Yokogawa AAM21-S2 is categorized as a multi-functional analog module, with a configurable design that balances performance and space efficiency. It features 8 analog channels in total, which can be configured as 4 input + 4 output channels (the most common setup) to support simultaneous signal acquisition and actuation control—eliminating the need for separate input and output modules.
For input signals, it supports standard industrial types: 4-20 mA DC current (compatible with most process transmitters) and 1-5 V DC voltage. It also offers optional compatibility with thermocouple (TC) signals (e.g., J, K, T types) and resistance temperature detector (RTD) signals (e.g., Pt100) for direct temperature measurement. Input impedance is 250 Ω for current signals and 2 MΩ for voltage signals, ensuring seamless matching with field device outputs.
For output signals, it provides 4-20 mA DC current (standard) and 1-5 V DC voltage (standard), with an optional 0-20 mA DC current range to adapt to diverse actuators like variable-speed pumps or control valves. Output load capacity is up to 500 Ω for current signals and a minimum of 10 kΩ for voltage signals, preventing signal distortion in typical industrial wiring setups.
Isolation performance meets strict industrial standards: 1500 V AC isolation between the module’s internal circuits and the DCS backplane (tested for 1 minute), and 250 V AC isolation between individual channels (tested for 1 minute) to suppress electromagnetic interference (EMI) from nearby power equipment.
Power supply relies on a 24 V DC industrial standard (with ±10% voltage tolerance to handle minor grid fluctuations), and maximum power consumption is 3.0 W when all 8 channels are active—ideal for energy-efficient DCS configurations.
