Description
The Metso A413295 AIR8C is a high-performance analog input module designed for use within the Metso DNA (Distributed Network Architecture) automation system. As a critical component of the I/O subsystem, the AIR8C (Analog Input, Redundant, 8 Channels) is engineered to interface between field instrumentation and the process controllers. It specializes in the acquisition of standard current and voltage signals, providing high-resolution digitization for precise process monitoring.
The module is built for “High Availability” applications, supporting redundancy to ensure that process data remains accessible even in the event of a partial hardware failure. It is widely utilized in heavy industries where downtime is not an option.
METSO A413295 AIR8C
Product Parameters (Datasheet)
The following specifications define the technical capabilities of the A413295 AIR8C module:
| Parameter | Specification |
| Model Number | AIR8C |
| Part Number | A413295 |
| Number of Channels | 8 Isolated Analog Inputs |
| Input Signal Types | 0/4…20 mA, 0…5/10 V DC |
| A/D Conversion | 16-bit Resolution |
| Accuracy | ±0.1% of full scale |
| Input Impedance | 250 Ω (Current) / >1 M\Omega (Voltage) |
| Galvanic Isolation | 500 V DC (Channel-to-Bus and Channel-to-Channel) |
| Update Rate | 10 ms (for all 8 channels) |
| Power Consumption | Typical 2.5 W @ 24 V DC |
| Redundancy Support | Yes, supports 1:1 Redundancy |
| Diagnostics | Wire break detection, short circuit monitoring, internal self-test |
Technical Features & Description
- High Precision: With 16-bit A/D conversion, the AIR8C provides the granularity required for sensitive control loops, such as pressure regulation or chemical dosing.
- Redundancy: When installed in a redundant pair, the modules synchronize data. If the primary module detects an internal fault, the system bumplessly switches to the secondary module.
- HART Compatibility: The AIR8C is designed to pass through HART (Highway Addressable Remote Transducer) digital communication signals, allowing for remote calibration and diagnostics of smart field devices.
- Robust Design: The module is “substation hardened,” featuring high immunity to electromagnetic interference (EMI) and vibration, typical of power plants and refineries.
Country of Origin
- Primary Origin: Finland (Metso Corporation, now part of Valmet/Neles depending on the specific division evolution).
METSO A413295 AIR8C
Installation & Usage Guidelines
- Mounting: The AIR8C is designed to be plugged into a Metso DNA I/O backplane or terminal base. Ensure the power is switched off before insertion to prevent transient surges.
- Wiring: Connect the 4-20 mA loops to the designated terminals. For 2-wire transmitters, the module can provide loop power if configured correctly on the terminal base.
- Grounding: The cable shields should be grounded at the terminal base to ensure maximum noise rejection for low-level signals.
- Configuration: Use the Metso DNA Engineering tools to assign the module address and define input ranges (e.g., 4 mA = 0 Bar, 20 mA = 10 Bar).
- Monitoring: Monitor the front-panel LEDs. A green LED indicates “Ready/OK,” while a red or amber LED signifies a channel fault or configuration mismatch.
Recommended Related Products from Metso / Valmet
To build or maintain a complete Metso DNA control node, the following related modules are frequently utilized:
- A413290 (AOR8C): The complementary Analog Output module (8 channels) for controlling valves and actuators.
- A413280 (DIR16): A 16-channel Digital Input module for monitoring switches and contactors.
- A413285 (DOR16): A 16-channel Digital Output module for relay and solenoid control.
- ACU (Advanced Control Unit): The high-level process controller that manages the AIR8C modules via the I/O bus.
- Bus Interface Modules: Required for connecting local I/O clusters to the DNA-Net plant network.
