The Yokogawa AAI141-S00/K4A00 delivers precise analog signal processing for demanding industrial automation applications. This specialized input module integrates seamlessly with CENTUM VP and ProSafe-RS systems for reliable data acquisition. Engineers choose this unit when they need accurate 4 to 20 mA signal processing with convenient KS cable connectivity. You can depend on the Yokogawa AAI141-S00/K4A00 for consistent performance in continuous process environments. Its robust construction ensures long-term reliability even in challenging industrial settings.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | Yokogawa AAI141-S00/K4A00 |
| Product Type | Analog Input Module with KS Cable Interface |
| Manufacturer | Yokogawa Electric Corporation |
| Series Compatibility | CENTUM VP, ProSafe-RS, CENTUM CS 3000 |
| Suffix Code -S | Standard type |
| Suffix Code 00 | Basic type configuration |
| Suffix Code /K4A00 | With KS Cable Interface Adapter |
| Number of Channels | 16 non-isolated inputs |
| Input Signal Type | 4 to 20 mA DC current loop |
| Allowable Input Current | 27 mA maximum |
| Allowable Input Voltage | ±10 V DC maximum |
| Channel Isolation | Non-isolated (common ground configuration) |
| Input Resistance | 250 Ω ±0.1% |
| Sampling Rate | 100 samples per second |
| Resolution | 16 bits |
| Accuracy | ±0.1% of full scale at 25°C |
| Module Net Weight | 0.2 kg (0.44 lbs) |
| Shipping Weight | 2 kg (4.41 lbs) including packaging |
| Power Consumption | 3.5 W typical |
| Power Supply Voltage | 5 V DC from backplane |
| Operating Temperature | -10°C to +55°C (14°F to 131°F) |
| Storage Temperature | -20°C to +70°C (-4°F to 158°F) |
| Dimensions (H x W x D) | 130 mm x 30 mm x 115 mm (5.12 x 1.18 x 4.53 inches) |
| Interface Type | KS Cable Interface Adapter for simplified wiring |
| Connector Type | 40-pin male connector for KS cable assembly |
| MTBF | > 1,000,000 hours |
KS Cable Interface Adapter Features
The /K4A00 suffix adds the KS Cable Interface Adapter to the standard AAI141-S00 module. This feature significantly simplifies field wiring and reduces installation time. You can connect pre-fabricated KS cables directly to the module without individual terminal wiring. The interface adapter provides organized connections for all 16 input channels.
| Interface Component | Description | Benefit |
|---|---|---|
| KS Cable Interface | 40-pin male connector on module face | Enables plug-and-play cable connection |
| Mating Cable Assembly | Pre-wired KS cable with 40-pin female connector | Eliminates field wiring errors |
| Cable Retention | Locking mechanism secures cable connection | Prevents accidental disconnection |
| Signal Organization | Shielded twisted-pair construction | Maintains signal integrity |
| Channel Mapping | One-to-one pin assignment for 16 channels | Simplifies troubleshooting |
Input Channel Configuration
The Yokogawa AAI141-S00/K4A00 accommodates 16 non-isolated current inputs through the KS interface. Each channel accepts 4 to 20 mA signals from two-wire transmitters and loop-powered devices. You can connect field instruments without external power supplies for streamlined installation. The KS cable assembly maintains proper shielding for noise immunity.
| Channel Group | Pin Assignment on KS Interface | Signal Description |
|---|---|---|
| Channels 1-4 | Pins 1-8 | Four differential input pairs |
| Channels 5-8 | Pins 9-16 | Four differential input pairs |
| Channels 9-12 | Pins 17-24 | Four differential input pairs |
| Channels 13-16 | Pins 25-32 | Four differential input pairs |
| Common Returns | Pins 33-40 | Shared common connections |
| Shield Ground | Pin 40 | Cable shield termination point |
Current Input Specifications
This module specializes in processing 4 to 20 mA signals with high precision and reliability. The Yokogawa AAI141-S00/K4A00 incorporates a precision 250 Ω resistor for each channel. You can trust the module to maintain accuracy across the entire input range. The 27 mA allowable input current provides headroom for overrange conditions.
Nominal Range: 4 to 20 mA DC corresponds to 0 to 100 percent input span
Zero Scale: 4 mA represents 0 percent of measured value
Full Scale: 20 mA represents 100 percent of measured value
Overrange Capability: 20 to 24 mA accommodates process upsets
Maximum Safe Current: 27 mA ensures no damage from transient spikes
Input Impedance: 250 Ω precision resistor with ±0.1% tolerance
Open Circuit Detection: Software detects currents below 2 mA
Loop Power: External 24 V DC supply powers field transmitters
Physical Characteristics and Installation
The Yokogawa AAI141-S00/K4A00 features a compact design that conserves cabinet space. Its net weight of only 0.2 kg makes it easy to handle during installation. The 2 kg shipping weight includes protective packaging and the KS cable assembly. You can mount this module in standard Yokogawa I/O racks alongside other modules.
Module Dimensions: 130 mm height fits standard sub-racks
Width: 30 mm allows high-density installation
Depth: 115 mm accommodates standard enclosure depths
Panel Space: Requires minimal room for mounting and airflow
Connector Location: Front-facing KS interface for easy access
LED Indicators: Module status and communication activity lights
Installation Torque: 0.5 Nm for mounting screw securement
Performance and Reliability
Industrial applications demand consistent performance from critical I/O modules. The Yokogawa AAI141-S00/K4A00 delivers exceptional accuracy and stability over time. Its 16-bit resolution provides fine granularity for detecting subtle process changes. You can rely on this module for years of maintenance-free operation.
Details
| Weight | 0.7 kg |
|---|---|
| Dimensions | 2.5 × 20.3 × 15.2 mm |
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