AAV142-S50 Yokogawa CENTUM VP Datasheet & Technical Manual

AAV142-S50 Yokogawa CENTUM VP Analog Input Module 16 Channels

AAV142-S50 Yokogawa CENTUM VP Analog Input Module 16 Channels

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Yokogawa AAV142-S50 CENTUM VP Analog Input Module Configured for high-density analog signal processing in CENTUM VP platforms, the Yokogawa AAV142-S50...

SKU: AAV142-S50

Manufacturer: Yokogawa
Product No.: AAV142-S50
Product Type: Analog Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa AAV142-S50 CENTUM VP Analog Input Module

Configured for high-density analog signal processing in CENTUM VP platforms, the Yokogawa AAV142-S50 (AAV142 Analog Input Module) provides direct physical/electrical execution across system rack node units.

Hardware Specifications

Parameter	Specification
Model	AAV142-S50
Brand	Yokogawa
Origin	Japan
Weight	0.3 kg
Dimensions	150 mm x 25 mm x 100 mm
Operating Temp	0 deg C to 60 deg C
Power Consumption	450 mA max at 5 V DC (via backplane)
System Compatibility	Yokogawa CENTUM VP DCS (ANB10/ANB11 node units)
Channel Capacity	16 isolated channels
Input Signal	4-20 mA DC, DC voltage, thermocouple
Input Impedance	250 ohm (power-on), 500 kohm or more (power-off)
Allowable Input Current	30 mA DC
Signal Conversion	16-bit A/D resolution
Measurement Accuracy	+/-0.1% of full scale
Data Refresh Cycle	10 ms
Isolation Withstand	500 V AC (input-to-system), 500 V AC (channel-to-channel)

4-20 mA HART Loop Protocol and Channel Isolation

The AAV142-S50 analog input module incorporates robust channel-to-channel isolation rated at 500 V AC to eliminate ground loops between field instruments and the host controller. Current signals operating on the 4-20 mA HART loop protocol pass through dedicated 250 ohm input impedances, enabling precise 16-bit A/D digital conversion. Internal diagnostic circuits execute self-tests and continuously monitor signal quality, ensuring transient voltage suppression and high signal integrity before passing data across the node unit backplane.

Frequently Asked Questions

Q: What happens to the module input impedance if power to the node unit fails?

A: During power-off conditions, the internal impedance automatically transitions from 250 ohm to 500 kohm or higher. This high-impedance state prevents current loop loading and safeguards upstream field transmitters.

Q: Can the module be inserted directly into active ANB10 or ANB11 node slots?

A: Field technicians must follow station-specific hot-swap protocols and verify node status prior to seating. Inserting the module into an active slot requires aligning backplane pin connections to avoid triggering transient diagnostic alerts on adjacent channels.

Field Installation Guidelines

Seat the AAV142-S50 module directly into the designated slot of an ANB10 or ANB11 node unit. Press the module evenly into the backplane connector and lock the upper and lower retaining mechanisms to prevent physical displacement caused by cabinet vibration.

Use shielded twisted-pair cabling for all 4-20 mA current loop connections. Ground the cable drain wires at a single point on the cabinet protective earth bar. Maintain complete isolation between analog input signal lines and high-voltage AC power wiring inside enclosure ducting.

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