Yokogawa ALU4*D Modular I/O System 100% Original New
The Yokogawa ALU4*D is a modular i/o system for Yokogawa platforms. Input Signal: 4 to 20 mA DC, 1 to 5 V DC (allowable common mode voltage ± 1 V or less), -10 to 10 V DC | Allowable Input Current/Voltage: 27 mA, ±7.5 V, ±13 V | Input Resistance (Power ON): 400 Ω (at 20 mA) to 1000 Ω (at 4 mA), 1 MΩ or larger. Factory-sealed, live-rack tested, 48-hour burn-in. 12-month warranty. Ships within 24 hours.
Technical Specifications
| Model | AAI141, AAV141, AAV142, AAB141 |
|---|---|
| Number of Input Channels | 16, non-isolated |
| Input Signal | 4 to 20 mA DC, 1 to 5 V DC (allowable common mode voltage ± 1 V or less), -10 to 10 V DC |
| Allowable Input Current/Voltage | 27 mA, ±7.5 V, ±13 V |
| Input Resistance (Power ON) | 400 Ω (at 20 mA) to 1000 Ω (at 4 mA), 1 MΩ or larger |
| Input Resistance (Power OFF) | 500 kΩ or larger, 340 kΩ or larger, 660 kΩ or larger |
| Accuracy | ±16 μA, ±4 mV, ±20 mV |
| Data Update Period | 10 ms |
| Step Response Time | 100 ms |
| Transmitter Power Supply | 14.8 V or higher (at 20 mA), 26.4 V or less (at 0 mA) (output current limit: 27 mA) |
| Setting of 2-wire or 4-wire Transmitter | For each channel by setting pin |
| Drift due to Ambient Temperature Change | ±16 μA/10 °C, ±4 mV/10 °C, ±20 mV/10 °C, ±0.1 %/10 °C |
| Maximum Current Consumption | 310 mA (5 V DC), 450 mA (24 V DC) |
| Weight | 0.2 kg |
| External Connection | Pressure clamp terminal, KS cable, MIL connector cable |
| Manufacturer | Yokogawa |
| Model / SKU | ALU4*D |
Ships within 24 hours | 12-Month Warranty | Worldwide Delivery
I/O Module Replacement — Get the Exact Configuration
The Yokogawa ALU4*D is an I/O module. What makes replacement orders tricky is that Yokogawa embeds configuration options in the part number — suffix codes can change input range, output type, isolation, or channel count. Two modules with the same base number can be completely incompatible. Always verify the full part number from the label on your existing module. Send us a photo if unsure — our engineers confirm compatibility within 4 hours.
Every I/O module ships factory-sealed and functionally tested: all channels exercised with calibrated sources, communication verified, 48-hour burn-in at 55°C. Printed test report. 12-month warranty. Ships within 24 hours.
Compatible Parts — Same System
These modules share the same system family as the ALU4*D. Commonly ordered together for complete rack builds or spare parts kits.
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