Yokogawa AAB841-S00 CENTUM VP Analog Input/Output Module

2026-04-20T00:53:25-07:00

Type: Analog I/O Module
Price: 66.00

Product Overview

The Yokogawa AAB841-S00 functions as a high-density Analog Input/Output module specifically designed for the CENTUM VP distributed control system. This module streamlines rack space by integrating 8 input channels and 8 output channels into a single unit. It processes 1 to 5 V DC voltage inputs while simultaneously providing 4 to 20 mA DC current outputs for field instrument control. We supply this module as 100% brand new and original factory stock to ensure maximum system integrity.

Part Number Breakdown

The model code AAB841-S00 follows Yokogawa’s standard modular identification:

AAB841: Analog Input/Output Module (8-channel input / 8-channel output)

-S: Standard type configuration

0: Always 0 (Fixed)

0: Basic software functional requirements

Technical Specifications

This module offers high-precision signal processing with the following technical parameters:

Parameter | Specification
Channels | 8 Input / 8 Output
Input Signal Range | 1 to 5 V DC
Output Signal Range | 4 to 20 mA DC
Input Accuracy | $\pm4$ mV
Output Accuracy | $\pm48$ μA
Input Step Response | 100 ms
Output Step Response | 40 ms
Power Consumption | 310 mA (5V DC) / 250 mA (24V DC)
Isolation | Non-isolated design
Connection Method | Pressure clamp terminals or KS cables
Weight | 0.3 kg

Engineering Advantages

Space-Efficient Hybrid Design: By combining both input and output functions into a single 0.3 kg module, the AAB841-S00 reduces the number of required slots in the node unit. This footprint reduction proves critical in offshore platforms or containerized control rooms where cabinet space carries a premium.

High-Impedance Input Protection: In a powered state, the voltage input maintains an impedance $\ge1$ MΩ. This high resistance prevents signal loading, ensuring that the module captures the true process variable without distorting the source signal.

Rapid Control Loop Execution: With a 40 ms output step response and a 100 ms input response, this module supports fast-acting control loops. It ensures the DCS reacts quickly to process upsets, maintaining stability in high-pressure or high-flow environments.

Flexible Field Wiring: The module supports both pressure clamp terminals and KS cable interfaces. This flexibility allows engineers to choose between direct point-to-point wiring for simplified maintenance or pre-fabricated KS cables for rapid, error-free mass termination during large-scale system deployments.

FAQs

Can the AAB841-S00 handle direct current inputs?

The module natively accepts 1 to 5 V DC. To process a 4 to 20 mA current input, you must install a precision shunt resistor (typically 250 Ω) across the input terminals to convert the current into the required voltage range.

What are the thermal considerations for installation?

The module exhibits a temperature drift of only $+0.1\%$ per 10°C. While highly stable, you should maintain consistent cabinet ventilation to stay within the standard operating range, especially when mounting multiple high-density I/O modules in close proximity.

Does this module provide channel-to-channel isolation?

No, the AAB841-S00 utilizes a non-isolated design. For applications involving high common-mode voltages or significant electrical noise between field devices, you should utilize external signal isolators to protect the DCS backplane.

Is this module compatible with older CENTUM CS 3000 systems?

The AAB841-S00 primarily supports CENTUM VP environments. Always verify your specific Field Control Station (FCS) model and firmware revision to ensure full software driver compatibility before hot-swapping or adding new modules.