Yokogawa AAI143-S50/A4S00 Analog Input Module 16 Channel

AAI143-S50/A4S00 Product Identity

• Brand: Yokogawa
• Model: AAI143-S50/A4S00
• Real product type: Analog Input Module
• Not a hydraulic filter
• Series: AAI143 isolated AI family
• Signal class: 4–20 mA current input
• Designed for Yokogawa Centum VP
• Used in DCS signal collection

Core Functional Profile

• 16 analog input channels
• Channel to channel isolation
• Loop to system isolation
• Stable low level reading
• Built for process transmitters
• Supports standard 4–20 mA loops
• Compact plug-in module body

Signal Performance Snapshot

• Input range: 4 to 20 mA
• Max loop current: 24 mA
• Typical accuracy: ±16 µA
• Update cycle: 10 ms
• Step response: about 10 ms
• Input resistance ON: about 270–350 ohm
• Input resistance OFF: ≥500 kΩ
• Temperature drift: ±16 µA per 10°C

Loop Power And Channel Setup

• Loop supply ≥19 V at 20 mA
• Loop supply ≤25.5 V at 0 mA
• Output limit near 25 mA
• 2-wire transmitter ready
• 4-wire transmitter ready
• Mode set by hardware pin
• No software switch needed

Mechanical And Wiring Features

• Pressure clamp terminal block included
• Option code: /A4S00
• Terminal model: ATA4S-00
• Fast wire insert design
• Good for high vibration panels
• Clear channel marking
• Quick loop test access

Suffix And Option Tree View

• AAI143
  • Analog input module base
  • 16-channel isolated type
• -S
  • Standard version
• -5
  • No explosion protection
• -0
  • Basic feature set
• /A4S00
  • Pressure clamp terminal block
  • Direct field wiring support

Extended Technical Selling Points

• High noise immunity design
• Strong isolation barrier
• Low cross-channel interference
• Works with long field cables
• Stable under cabinet heat
• Suited for critical loops
• Trusted Yokogawa hardware line

Typical Use Areas

• Oil and gas plants
• Chemical process lines
• Power generation sites
• Water treatment systems
• Large DCS cabinets

Warranty And Logistics

• Warranty term: 12 months
• Full bench test before ship
• Shock safe packing
• Courier: FedEx, UPS, DHL
• Global delivery service

Professional FAQ With Field Tips

• How do I choose isolated vs non-isolated input cards
• Use isolated when field grounds differ.
• What wiring mistake happens most
• Wrong loop polarity is very common.
• Is pressure clamp better than screw type
• Yes for fast work and vibration sites.
• How many spare channels should I plan
• Keep at least two spare inputs.
• When should I add signal isolators outside
• Add them in very noisy zones.

Contact And Support

• Email: info@oiltechcontrols.com
• WhatsApp: +86 158 8020 0923

Copyright © 2026 Oiltech Controls Limited. All rights reserved.

Original Source: https://www.oiltechcontrols.com/

Partner PLCDCS HUB Limited . All rights reserved.

Powergear X Automation Limited