Overview
Configured for 4-20 mA process signal acquisition in Yokogawa CENTUM VP and CENTUM CS 3000 systems, the Yokogawa AAI141-S00/K4A00 (AAI141 Analog Input Module) provides direct electrical input processing for 16 field channels. The module accepts signals from 2-wire and 4-wire transmitters, supports HART communication, and includes the /K4A00 option with an ATK4A-00 KS Cable Interface Adapter.
Suffix Breakdown & Model Matrix
| Parameter | Specification |
|---|---|
| Full Model | AAI141-S00/K4A00 |
| Base Model | AAI141 |
| Module Type | Analog Input Module |
| Suffix S00 | Standard type as specified in the provided product data |
| Suffix /K4A00 | Includes KS Cable Interface Adapter |
| Adapter Model | ATK4A-00 |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AAI141-S00/K4A00 |
| Brand | Yokogawa |
| Product Type | Analog Input Module |
| Number of Input Channels | 16 channels |
| Channel Configuration | Non-isolated |
| Input Signal | 4-20 mA DC |
| Supported Transmitters | 2-wire and 4-wire transmitters |
| Allowable Input Current | 27 mA max |
| Input Resistance, Power ON | 400 ohm at 20 mA to 1000 ohm at 4 mA |
| Input Resistance, Power OFF | 500 kohm or larger |
| Accuracy | +/- 16 uA |
| Data Update Period | 10 ms |
| Step Response Time | 100 ms |
| Transmitter Power Supply | 14.8 VDC or higher at 20 mA; 26.4 VDC or less at 0 mA |
| HART Communication | Available |
| Power Consumption | 310 mA at 5 VDC; 450 mA at 24 VDC |
| Weight | Approx. 0.2 kg, module only |
| Origin | Japan |
| Included Option | KS Cable Interface Adapter, ATK4A-00 |
4-20 mA HART Loop Interface
The AAI141-S00/K4A00 processes 4-20 mA DC signals from field transmitters and updates input data every 10 ms. In addition, HART communication is available for compatible field devices.
The module supports 2-wire and 4-wire transmitter connections. The transmitter supply output is specified at 14.8 VDC or higher at 20 mA and 26.4 VDC or less at 0 mA. Therefore, loop voltage requirements should be checked against the connected transmitter and field wiring conditions.
The 16 input channels use a non-isolated configuration. Accordingly, grounding, cable shielding, and common-mode wiring practices should follow the applicable Yokogawa system installation requirements.
Frequently Asked Questions
Q: How many analog input channels does the AAI141-S00/K4A00 provide?
A: The module provides 16 non-isolated analog input channels.
Q: Does the AAI141-S00/K4A00 support HART communication?
A: Yes. HART communication is available according to the provided product specification.
Q: What is the maximum current consumption of the module?
A: The maximum specified consumption is 310 mA at 5 VDC and 450 mA at 24 VDC.
Field Installation Guidelines
- Install the module only in a compatible Yokogawa CENTUM VP or CENTUM CS 3000 I/O system configuration.
- Verify module orientation and connector engagement before applying system power.
- Use shielded signal cables where required by the field installation standard.
- Route analog signal wiring separately from high-current and high-voltage power cables.
- Apply cable shield grounding according to the applicable system grounding scheme to reduce electrical noise.
- Check transmitter loop voltage requirements before connecting 2-wire field devices.
- Confirm that input current remains within the specified 27 mA maximum limit.
- Inspect the ATK4A-00 adapter and associated cable connections when the /K4A00 option is installed.
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