My Cart
0 items
Genuine Automation Parts | Worldwide Express Delivery | 12-Month Warranty — [GET A QUOTE]
The AMM12 is a high-density voltage input multiplexer engineered for the CENTUM distributed control system (DCS) platform by Yokogawa Electric Corporation. It functions as an interface module that consolidates multiple...
Availability: Low stock: 99 left
Reliable Worldwide Delivery
30-Day Money-Back Guarantee
Need more details? Read our fullShipping PolicyandRefund Policy.
The AMM12 is a high-density voltage input multiplexer engineered for the CENTUM distributed control system (DCS) platform by Yokogawa Electric Corporation. It functions as an interface module that consolidates multiple analog voltage signals into a streamlined data stream for the field control station.
Through advanced multiplexing circuitry, the AMM12 significantly reduces I/O nest hardware footprint, making it well suited for complex plant architectures with extensive monitoring points. Designed for mission-critical environments, the module preserves signal integrity via strong common-mode rejection and precise analog-to-digital conversion.
The AMM12 is fully hot-swappable, allowing maintenance or system expansion without interrupting the control loop, thereby supporting high plant availability and operational continuity.
| Item | Specification |
|---|---|
| Manufacturer | Yokogawa Electric Corporation |
| Module Series | CENTUM VP / CENTUM CS 3000 |
| Input Type | Multiplexed Analog Voltage |
| Input Voltage Range | Typically 1–5 V DC (configurable) |
| Input Impedance | ≥ 1 MΩ (power-on state) |
| A/D Resolution | 16-bit |
| Accuracy | ±0.1% of full scale (reference dependent) |
| Isolation | 1500 V AC galvanic isolation (input-to-system bus) |
| Sampling Period | Synchronized with DCS controller scan cycle |
| Dimensions | 2.5 cm × 22.9 cm × 7.6 cm |
| Weight | 0.4kg |
The AMM12 is widely deployed in heavy industrial sectors, including:
Petrochemical refining
LNG processing facilities
Large-scale thermal and combined-cycle power generation
It is particularly effective for monitoring non-critical secondary variables—such as auxiliary tank levels, voltage transmitters, and peripheral instrumentation—where high-density signal aggregation optimizes cabinet space and reduces overall I/O cost per point.
Can the AMM12 be used in a redundant configuration?
Yes. The module supports dual-redundant I/O nest configurations, ensuring continued signal acquisition in the event of a single module failure.
Does this module support current signals directly?
No. The AMM12 is a voltage-input module. For 4–20 mA current loops, a precision shunt resistor (typically 250 Ω) must be installed at the terminal board to convert the signal to a 1–5 V DC input range.
