AAT145-S03 Yokogawa CENTUM VP Datasheet & Technical Manual

Yokogawa AAT145-S03 CENTUM VP Analog Input Module

Yokogawa AAT145-S03 CENTUM VP Analog Input Module

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Yokogawa AAT145-S03 Analog Input Module Configured for high-precision temperature and millivolt acquisition in CENTUM VP/CS DCS platforms and FCN autonomous...

SKU: AAT145-S03

Manufacturer: Yokogawa
Product No.: AAT145-S03
Product Type: Analog Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa AAT145-S03 Analog Input Module

Configured for high-precision temperature and millivolt acquisition in CENTUM VP/CS DCS platforms and FCN autonomous controllers, the Yokogawa AAT145-S03 (AAT145 Analog Input Module) provides direct physical/electrical execution. This hardware component interfaces directly with multiple thermocouple types and low-voltage analog sources, converting raw thermal and voltage signals into digital process values. The unit incorporates dedicated hardware-level electrical safeguards to maintain signal integrity across localized industrial instrument loops.

Hardware Specifications

Parameter	Specification
Model	AAT145-S03
Brand	Yokogawa Electric Corporation
Origin	Japan
Input Channels	16 isolated channels
Input Signal Types	Thermocouples (Types J, K, E, B, R, S, T, N); mV (-100 to +150 mV / -20 to +80 mV)
Reference Junction Compensation	+/- 1 deg C
Resistance Limit	<= 1000 Ohm (signal source + wiring)
Effect of Resistance	+/- 20 uV
Accuracy	+/- 40 uV (TC/mV); RTD +/- 150 mOhm; POT +/- 0.2% FS
Response Time / Update Period	<= 1 s
Burn-out Detection	Configurable (UP/DOWN), detection time 60 s
Temperature Drift	+/- 80 uV / 10 deg C
Isolation	500 V AC (signal-to-system, 1 min); 200 V AC between channels
Power Consumption	350 mA (5 V DC)
Dimensions	130 x 127.2 x 32.8 mm
Weight	0.3 kg
Operating Temp	-20 to +70 deg C
Storage Temperature	-40 to +85 deg C
External Connection	KS1/KS8 cable (terminal block equivalent)
Environmental Protection	ISA Standard G3 conformal coating

Process Control & DCS Instrumentation Technical Attributes

The module utilizes a dedicated 4-20 mA HART loop protocol architecture overlay alongside direct analog-to-digital processing paths. Channel-to-channel isolation is established at a hardware rating of 200 V AC, mitigating ground loop currents and suppressing common-mode electrical noise that induces measurement degradation. To ensure precision during thermal fluctuations, embedded cold junction compensation (CJC) circuits execute real-time drift stabilization at +/- 1 deg C. The internal physical layout routes every channel through independent galvanic barriers, eliminating electrical cross-talk and protecting the system backplane bus from external field faults up to 500 V AC. Furthermore, the ISA G3 compliant conformal coating provides robust chemical resistance against airborne corrosive elements, guaranteeing continuous operation across harsh industrial environments.

Frequently Asked Questions

Q: Can the AAT145-S03 module be hot-swapped while the FCN or CENTUM backplane is energized?

A: Hot-swapping must comply strictly with Yokogawa system manual constraints. While the module architecture supports online replacement, the user must ensure that the specific node configuration is designated for high-availability hot-swap execution and that no transient open-circuit spikes are induced on adjacent channels during structural extraction.

Q: How does the module handle a physical sensor disconnection or wire break?

A: The hardware features an integrated downscale or upscale burn-out detection mechanism. Upon detection of an open loop (source + wiring resistance exceeding 1000 Ohm), the module forces the channel data to a predefined full-scale fault limit within a maximum detection window of 60 seconds.

Field Installation Guidelines

Mounting and Alignment: Secure the module firmly onto the dedicated system slot of the FCN autonomous controller or CENTUM DCS node interface. Verify that the alignment pins engage cleanly without forcing the physical backplane connectors.
Field Wiring: Connect field instrumentation using the standardized KS1 or KS8 interface cable assemblies. Maintain separation between signal cabling and high-voltage power lines to prevent electromagnetic induction.
Shielding and Grounding: Terminate all external instrument cable shields at the designated instrumentation ground bar. Do not loop ground connections or allow multi-point shield grounding, as this generates destructive ground loops.
Environmental Compliance: Maintain ambient operating conditions between -20 deg C and +70 deg C. Ensure the enclosure doors remain sealed to preserve the structural longevity provided by the ISA G3 conformal coating against corrosive gases.

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