AAM21-S2 YOKOGAWA CENTUM CS Datasheet & Technical Manual

YOKOGAWA AAM21-S2 CENTUM CS 3000 Analog Input Module

YOKOGAWA AAM21-S2 CENTUM CS 3000 Analog Input Module

Availability: 10 left in stock

YOKOGAWA AAM21-S2 Analog Input Module Configured for high-precision signal acquisition in CENTUM CS 3000 and ProSafe-RS platforms, the YOKOGAWA AAM21-S2...

SKU: AAM21-S2

Manufacturer: Yokogawa
Product No.: AAM21-S2
Product Type: Analog Input Modules
Product Origin: Japan
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

YOKOGAWA AAM21-S2 Analog Input Module

Configured for high-precision signal acquisition in CENTUM CS 3000 and ProSafe-RS platforms, the YOKOGAWA AAM21-S2 (AAM21 Analog Input Module) provides direct physical/electrical execution of 8-channel analog input monitoring.

Suffix Breakdown & Model Matrix

AAM21: Base model identifier for 8-channel analog current/voltage input functionality.
-S2: Style/Revision designation indicating hardware iteration and compatibility standards within the DCS control platform.

Hardware Specifications

Parameter	Specification
Model	AAM21-S2
Brand	YOKOGAWA
Origin	Japan
Weight	0.3 kg
Dimensions	130 × 42.9 × 146.8 mm
Operating Temp	-20 deg C to +70 deg C
Power Consumption	Max 1.5 W
Input Channels	8 Analog
Signal Range	4-20 mA / 1-5 V / mV
Isolation	500 V AC

DCS Process Control & Isolation Attributes

The AAM21-S2 integrates a high-speed analog-to-digital conversion stage capable of scanning all 8 input channels within a 1-second interval. The module maintains signal integrity through channel-to-channel and channel-to-ground isolation, which mitigates common-mode noise and ground-loop currents in distributed control environments. It supports 4-20 mA HART loop protocol handshaking, ensuring compatibility with intelligent field transmitters. To maintain accuracy over varying environmental conditions, the module circuitry utilizes cold junction compensation (CJC) for temperature-based inputs, ensuring that terminal temperature gradients do not introduce measurement deviations into the 16-bit conversion stream.

Frequently Asked Questions

Q: Does the AAM21-S2 support redundant configurations?

A: Yes, the module is engineered to support redundant pairings within DCS control stations, allowing for seamless transition if the primary module encounters a diagnostic fault.

Q: How is the input signal impedance configured?

A: The module features an input impedance of 250 Ohms for current-based signals and 1 MOhm for voltage-based inputs, which is determined by the field wiring terminal connections and module configuration settings.

Q: Is this module capable of RTD sensing?

A: While the base architecture supports varied analog inputs, confirm the specific channel configuration in the engineering software matches the sensor type (Pt100, JPt100, Cu50, or Ni100) to prevent measurement inaccuracy.

Field Installation Guidelines

Mounting: Secure the module to the DCS rack or cabinet backplane. Ensure the ground terminal is connected to the cabinet common ground to establish a stable reference for the internal isolation barriers.
Wiring: Utilize shielded twisted-pair cables for all analog signals. Terminate the shield at the control cabinet side to provide an effective path to ground for induced electromagnetic interference.
Isolation: Maintain physical separation between input signal wiring and high-current AC power lines to prevent inductive coupling and ensure compliance with electromagnetic compatibility standards.
Thermal Management: Although the unit is rated for operation up to 70 deg C, maintain adequate clearance around the module housing to facilitate heat dissipation, particularly in high-density rack configurations.

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