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Technical specifications for AMM12T S2
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Manufacturer:Yokogawa
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Product Category:DCS Systems
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Spare Part Number:AMM12T S2
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Estimated shipping dimensions:20.3×11.8×1.2cm
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Weight:0.12 kg
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Tariff Code:8537101190
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Counliy of origin:Japan
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Module function:Voltage input multiplexer
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Input signal:DC voltage
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Input capacity:Up to 16 points
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Input range:-10 to +10 V DC
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Allowable input voltage:-30 to +30 V DC
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Input resistance:1 Mohm
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Signal isolation:Input-to-system isolation
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Data update period:1 s
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Accuracy:+/-4 mV
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Common-mode voltage:200 V AC
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Current consumption:500 mA maximum at 5 V DC
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Range assignment:Per-point software setting
Information
Overview
Manuals
Common Applications
Product Precautions
Within a CENTUM RIO node, Yokogawa AMM12T S2 concentrates multiple low-speed voltage measurements into one nest-mounted acquisition module while keeping field inputs isolated from the system side.
- Sixteen measurement points share one multiplexer module.
- Each point receives its signal range from software configuration.
- The hardware accepts bipolar DC voltage across the documented span.
- Terminal wiring is completed at the I/O module nest with M4 screws.
A one-second update cycle suits monitoring points whose process dynamics do not require high-speed acquisition. The installed range, input identity, common-mode conditions and original nest allocation must be preserved together during service work.
Important Notice: Confirm the complete AMM12T S2 component tag and the configured signal type before replacement. Do not apply the mV, thermocouple or RTD specifications shown for neighboring multiplexer models.
Yokogawa AMM12T S2 Manuals & Downloads
Yokogawa AMM12T S2 Official Technical Reference Excerpt (PDF)Yokogawa AMM12T S2 Installation & Commissioning Guide (PDF)The official excerpt documents the AMM12T voltage-input architecture and exact electrical characteristics. The installation guide organizes isolation, point mapping, range restoration and witnessed commissioning.
Slow-changing voltage measurementAcquire as many as 16 configured DC-voltage points where the documented one-second update period is suitable for the process.
CENTUM RIO retrofit serviceRestore an existing nest-mounted AMM12T position while retaining its channel map, M4 terminal wiring and per-point software ranges.
Bipolar analog monitoringMeasure configured signals across the documented -10 to +10 V DC range without reusing mV or thermocouple-family data.
Parallel observation circuitsUse a documented parallel input arrangement only after burnout detection is set OFF and the complete circuit has been reviewed.
AMM12T S2 is a software-ranged voltage multiplexer in a CENTUM RIO I/O nest. Preserve the complete component identity, point map and terminal evidence during maintenance.
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Read the complete AMM12T S2 component tag and record its nest, slot and terminal assignment before disturbing the module.
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Place every affected voltage point in the approved maintenance state and isolate hazardous field energy before handling terminals.
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Record each point's software-selected signal range; do not derive configuration from an adjacent multiplexer model.
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Keep all conductors identified by point and polarity, and retain the original M4 terminal positions during transfer.
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Do not exceed the documented -30 to +30 V DC allowable input limit or the 200 V AC common-mode boundary.
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Use parallel input connection only when burnout detection is OFF and the circuit design explicitly permits the shared measurement.
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Confirm module current demand and nest power availability before returning the RIO node to service.
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After restoration, compare all permitted channel readings and the configured point ranges with the pre-work baseline before release.
Technical notes
AMM12T signal type and range are assigned by software for each measuring point. Verify the complete S2 component tag and the original I/O module-nest position before replacement; do not substitute thermocouple, mV or RTD multiplexer data.
FAQ View All FAQ
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What field signal is measured by Yokogawa AMM12T S2?Yokogawa AMM12T S2 belongs to the AMM12T voltage-input multiplexer design and measures DC voltage. It must not be configured from the thermocouple, mV or RTD columns of the family table.
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How many measuring points can Yokogawa AMM12T S2 acquire?The AMM12T multiplexer design accepts up to 16 measuring points, with the input signal and range specified by software for each point.
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Which input range applies to Yokogawa AMM12T S2?The documented AMM12T DC-voltage input range is -10 to +10 V DC, and the allowable input voltage is -30 to +30 V DC.
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What conversion timing is documented for Yokogawa AMM12T S2?The AMM12T data update period is 1 second and the documented voltage accuracy is +/-4 mV.
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How is Yokogawa AMM12T S2 connected in the RIO hardware?AMM12T is installed in an I/O module nest and connects to the nest terminals with M4 screws.
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Can Yokogawa AMM12T S2 inputs be connected in parallel?Parallel connection is permitted only when burnout detection is OFF. The installed circuit and software settings must be checked before using that arrangement.
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What isolation boundary applies to Yokogawa AMM12T S2?The AMM12T table states that input signals are isolated from the system and permits an allowable common-mode voltage of 200 V AC.
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Which identity must be verified before ordering Yokogawa AMM12T S2?Verify the full AMM12T S2 component tag, style marking, original nest position, terminal arrangement and software range assignment. The S2 text must not be used to infer another multiplexer signal type.
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