AAI143-H50/K4A00 Yokogawa Analog Input Module

AAI143-H50/K4A00 Yokogawa 16-Channel Analog Input Module

AAI143-H50/K4A00 Yokogawa 16-Channel Analog Input Module

Availability: 10 left in stock

Yokogawa AAI143 Analog Input Module Configured for high-accuracy signal acquisition in CENTUM VP platforms, the Yokogawa AAI143-H50/K4A00 (AAI143 Analog Input...

SKU: NFAI143-H50/A4AS0

Manufacturer: Yokogawa
Product No.: NFAI143-H50/A4AS0
Product Type: Analog Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 400g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa AAI143 Analog Input Module

Configured for high-accuracy signal acquisition in CENTUM VP platforms, the Yokogawa AAI143-H50/K4A00 (AAI143 Analog Input Module) provides direct physical/electrical execution.

Hardware Specifications

Parameter	Specification
Model	AAI143 (AAI143-H50/K4A00)
Brand	Yokogawa
Origin	Japan
Weight	0.40 kg (Net) / 3.0 kg (Shipping)
Dimensions	30 x 120 x 130 mm
Operating Temp	-20 to +55 deg C
Power Consumption	600 mA at 5 VDC
Input Channels	16 isolated analog inputs
Signal Range	4-20 mA DC
Input Resistance	250 ohm typical
Accuracy	+/-0.1% of full scale
Resolution	16 bits
Isolation	Optical and electrical isolation per channel
Enclosure Protection	Conformal coating for harsh environments

4-20 mA HART Loop Protocol & Channel-to-Channel Isolation

The module processes 16 channels of 4-20 mA DC analog current signals with integrated digital communication via the HART protocol. Dedicated optical and electrical channel isolation blocks ground loop currents, suppressing electromagnetic interference across field instrumentation loops. Internal 16-bit analog-to-digital conversion digitizes process variables at update response times under 100 ms, while individual channel diagnostic routines continuously verify loop status and report field wiring abnormalities to the host control system.

Frequently Asked Questions

Q: What is the function of the /K4A00 option code on the AAI143 module?

A: The /K4A00 option designates a KS Cable Interface Adapter mounted on the module to facilitate direct connection to an ATK4A-00 / AEA4D terminal board using standard system interface cabling.

Q: How does the HART digital communication function operate alongside the 4-20 mA current loop?

A: The -H50 suffix enables HART digital communication signals to superimpose directly onto the 4-20 mA analog current loop, allowing digital transmitter parameters and diagnostic data to pass through without interrupting analog signal accuracy.

Q: Can the AAI143 module be inserted or removed while backplane power is applied?

A: Live maintenance and hot-swapping are supported on compatible CENTUM VP baseplates, allowing technicians to replace faulty I/O modules without interrupting power or communication on adjacent slot locations.

Field Installation Guidelines

Mount the module firmly into its assigned slot on the CENTUM VP rack frame, ensuring the top and bottom latching mechanisms seat securely onto the backplane connector. Maintain cabinet operating ambient temperatures strictly within the -20 to +55 deg C range, avoiding environments exceeding 95% non-condensing relative humidity.

Route all 4-20 mA HART signal field wiring away from high-voltage AC lines and variable frequency drives to prevent electromagnetic noise coupling. Connect field wiring through the KS cable adapter to the corresponding terminal board, grounding overall cable shields at a single cabinet earth point to preserve 16-bit analog signal resolution across all 16 input channels.

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