The Yokogawa AAI141-S00/k400 provides exceptional analog input capabilities for demanding industrial control applications. This specialized module integrates seamlessly into CENTUM VP and ProSafe-RS systems for comprehensive process monitoring. Engineers frequently select this unit when they require consistent 4 to 20 mA signal processing with high reliability. You can depend on the Yokogawa AAI141-S00/k400 for accurate data acquisition in continuous manufacturing environments. Its robust construction ensures long-term performance even in harsh industrial settings.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | Yokogawa AAI141-S00/k400 |
| Product Type | Analog Input Module with k400 termination |
| Manufacturer | Yokogawa Electric Corporation |
| Series Compatibility | CENTUM VP, ProSafe-RS, CENTUM CS 3000 |
| 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 |
| Temperature Drift | ±100 ppm/°C maximum |
| Response Time | 20 ms including digital filtering |
| Common Mode Voltage | ±1 V DC maximum between channels |
| Power Consumption | 3.5 W typical, 4.2 W maximum |
| 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) |
| Operating Humidity | 10% to 90% RH non-condensing |
| Dimensions (H x W x D) | 130 mm x 30 mm x 115 mm (5.12 x 1.18 x 4.53 inches) |
| Weight | 0.32 kg (0.71 lbs) |
| Termination Type | k400 pressure clamp端子 block |
| Wire Gauge Range | 18 to 22 AWG recommended |
| MTBF | > 1,000,000 hours |
| Certifications | CE, UL, CSA, FM Class I Div 2 |
Current Input Characteristics
The Yokogawa AAI141-S00/k400 specializes in processing 4 to 20 mA current signals from field instruments. Its 250 Ω input resistor converts loop current to voltage with high precision. The module supports up to 27 mA maximum input current without damage or performance degradation.
| Current Parameter | Value | Condition |
|---|---|---|
| Nominal Input Range | 4 to 20 mA DC | Normal operation |
| Zero Scale Current | 4 mA | Corresponds to 0% input |
| Full Scale Current | 20 mA | Corresponds to 100% input |
| Overrange Current | 20 to 24 mA | Acceptable for diagnostics |
| Maximum Safe Current | 27 mA | No damage limit |
| Input Impedance | 250 Ω | ±0.1% precision resistor |
| Open Circuit Detection | < 2 mA | Software configurable |
Channel Configuration and Wiring
This module features 16 non-isolated inputs sharing a common return path. The Yokogawa AAI141-S00/k400 connects directly to two-wire transmitters and loop-powered devices. You can wire field instruments without external power supplies for simplified installation. The k400 termination block provides organized connections with clear labeling.
| Channel | Terminal Assignment | Signal Description |
|---|---|---|
| CH1 | IN1 (+) | Channel 1 positive input |
| CH1 | COM (-) | Common return for channel 1 |
| CH2 | IN2 (+) | Channel 2 positive input |
| CH2 | COM (-) | Common return for channel 2 |
| CH3 | IN3 (+) | Channel 3 positive input |
| CH3 | COM (-) | Common return for channel 3 |
| CH4 through CH16 | (Pattern repeats) | All channels share common return |
Performance and Accuracy Features
The Yokogawa AAI141-S00/k400 delivers exceptional accuracy for critical measurement applications. Its 16-bit resolution provides fine granularity for detecting small process changes. You can rely on the ±0.1% accuracy for precise control loop performance. The module includes digital filtering to eliminate electrical noise from industrial environments.
Resolution: 16 bits provides 65,536 steps across the input range
Accuracy: ±0.1% of full scale ensures reliable measurements
Repeatability: ±0.05% of full scale for consistent readings
Temperature Stability: ±100 ppm/°C maintains accuracy across temperature swings
Noise Rejection: 60 dB at 50/60 Hz for clean signals
Update Rate: 100 samples per second for responsive control
Burnout Detection: Software detects open circuits below 2 mA
Integration with Yokogawa Systems
Seamlessly integrating the Yokogawa AAI141-S00/k400 into your control architecture requires minimal configuration. This module works alongside other Yokogawa I/O units like the AAI143 isolated input modules. You can mix isolated and non-isolated modules within the same node for design flexibility. The k400 termination accepts standard instrument cables without special tools.
Environmental Durability
Industrial environments demand components that withstand challenging conditions reliably. The Yokogawa AAI141-S00/k400 operates continuously from -10°C to +55°C without performance degradation. You can install this module in indoor control rooms or field-mounted enclosures. Its non-condensing humidity rating covers most industrial locations. The rugged construction resists vibration and shock per IEC standards.
Details
| Weight | 0.7 kg |
|---|---|
| Dimensions | 2.5 × 20.3 × 15.2 mm |
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