F3CX04-0N YOKOGAWA Pulse Input Module

AMM12T-S2 YOKOGAWA CENTUM VP Analog Input Multiplexer Module

AMM12T-S2 YOKOGAWA CENTUM VP Analog Input Multiplexer Module

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YOKOGAWA AMM12T-S2 Voltage Input Multiplexer Module The YOKOGAWA AMM12T-S2, also cataloged as the AMM12T Input Module, operates as a dedicated...

رمز المنتج: AMM12T-S2

Manufacturer: Yokogawa
Product No.: AMM12T-S2
Product Type: Analog Input Modules
Product Origin: Japan
Payment:T/T, Western Union
Weight: 460g
Shipping port: Xiamen
Warranty: 12 months

وصف التقييمات

YOKOGAWA AMM12T-S2 Voltage Input Multiplexer Module

The YOKOGAWA AMM12T-S2, also cataloged as the AMM12T Input Module, operates as a dedicated hardware component for high-density signal multiplexing within CENTUM VP and CS DCS system platforms.

Suffix Breakdown & Model Matrix

AMM12T: Base model identifier for 16-channel analog voltage and thermocouple/RTD multiplexer functionality.
-S2: Revision designator indicating updated hardware iteration and compatibility standards for DCS rack backplane integration.

Hardware Specifications

Parameter	Specification
Model	AMM12T-S2
Brand	YOKOGAWA
Origin	Japan
Weight	0.46 kg
Dimensions	215 × 70 × 50 mm
Operating Temp	-10 deg C to +55 deg C
Power Consumption	24 V DC
Input Channels	16 Analog
Signal Types	DC Voltage, Thermocouple
Resolution	16-bit
Accuracy	+/- 0.15 deg C (TC)

DCS Process Control & Isolation Attributes

The AMM12T-S2 executes 16-channel analog data acquisition via a high-speed multiplexing architecture. To maintain measurement integrity across diverse input types, the module features channel-to-channel and channel-to-system isolation, which prevents ground-loop interference and common-mode voltage contamination. The integrated analog front-end incorporates active cold junction compensation (CJC) to ensure thermocouple precision for temperature-critical monitoring. By utilizing the 4-20 mA HART loop protocol connectivity—where applicable—the module maintains synchronization with field transmitters, while the 16-bit A/D conversion stage provides the high dynamic range required for precise process variable mapping.

Frequently Asked Questions

Q: Can the AMM12T-S2 perform hot-swapping within the DCS cabinet?

A: Module hot-swap capability is strictly dependent on the specific DCS backplane revision; verify that the system rack supports online module replacement to prevent communication bus disruption or potential damage to input circuits.

Q: Does the module require external excitation for sensors?

A: The AMM12T-S2 does not provide loop power for field devices. Ensure all connected transmitters or sensors are powered by an independent 24 V DC supply in accordance with standard loop wiring requirements.

Q: How does the disconnection detection function operate?

A: The module continuously monitors for open-loop conditions on the input signal paths. If a disconnection is detected, the unit reports a status flag to the DCS controller within a maximum of 20 seconds.

Field Installation Guidelines

Mounting: Secure the module to the DCS rack guide rails. Ensure the chassis is properly grounded to the cabinet's common earth point to maintain the module's noise immunity profile.
Wiring: Use shielded twisted-pair thermocouple extension wire or instrumentation-grade cable for all inputs. Terminate the shield at the cabinet side to drain induced electromagnetic interference.
Signal Isolation: Maintain physical distance between low-level signal wiring and AC power conductors. Utilize dedicated wire troughs to prevent inductive coupling into the multiplexer input stage.
Environmental: Operate within the specified temperature range to prevent thermal gradients across the terminal block, which can influence the accuracy of the internal cold junction compensation circuitry.

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