Description
Product Overview – Yokogawa AAI841 Analog I/O Module
- Brand: Yokogawa
- Model: AAI841
- System Series: Yokogawa Centum VP
- Module Type: Analog Input / Output Module
- I/O Structure: 8 Inputs + 8 Outputs
- The AAI841 handles analog signals in control systems.
- Supports current and voltage input signals.
- Designed for stable plant automation operation.
- Works in redundant systems for higher safety.
- Fast data refresh improves process response.
- Built for long-term industrial use.
Technical Specifications
- Input Channels: 8 analog inputs
- Output Channels: 8 analog outputs
- Input Signal Range: 4–20 mA, 1–5 V DC
- Output Signal: 4–20 mA
- Allowable Input Current: 25 mA max
- Allowable Voltage: ±7.5 V
- Input Accuracy: ±16 µA
- Output Accuracy: ±48 µA
- Update Period: 10 ms
- Input Response Time: 100 ms
- Output Response Time: 40 ms
- Temperature Drift: ±0.1 % per 10°C
- Operating Temperature: -20°C to 70°C (G3 option)
- Power Consumption: 310 mA at 5 V DC
- Power Consumption: 500 mA at 24 V DC
- Module Weight: 0.3 kg
- Signal Isolation: Non-isolated type
- Common Mode Voltage: ±1 V or less
- Transmitter Supply: 14.8–26.4 V DC
- HART Support: Available for input and output
Extended Performance Parameters
- High noise immunity for industrial environments.
- Stable linear output across full signal range.
- Resolution optimized for process accuracy.
- Continuous signal monitoring capability.
- Fast recovery after signal disturbance.
- Designed for 24/7 plant operation.
Configuration Breakdown (Hierarchy Structure)
- AAI841 – Base Model
- ├─ Type Code
- ├─ S = Standard model
- └─ H = HART communication enabled
- ├─ Explosion Protection
- ├─ 5 = No explosion protection
- └─ E = Explosion protection type
- ├─ Functional Level
- └─ 0 = Basic specification
- └─ Environmental Option
- └─ 3 = ISA G3 coating + -20~70°C rating
Optional Interface Modules
- /K4A00 – KS cable interface adapter
- /A4S00 – Analog pressure clamp terminal
- /A4S10 – Terminal with surge absorber
- /A4D00 – Dual terminal block
- /A4D10 – Dual terminal with surge protection
- /CCC01 – MIL cable connector cover
Installation & Wiring
- Mount directly into FIO system rack.
- Use pressure clamp or MIL cable connection.
- Verify signal polarity before power ON.
- Keep signal cables separated from power lines.
- Recommended grounding improves stability.
Operation & Maintenance Benefits
- No complex calibration required.
- Hot replacement supported in many systems.
- Fast diagnostics via controller software.
- Reduced downtime during maintenance.
- Clear signal status monitoring.
Typical Applications
- Oil and gas process control
- Chemical production plants
- Power generation automation
- Water treatment facilities
- Continuous manufacturing systems
Warranty & Shipping
- 12-month warranty after delivery.
- Worldwide shipping via FedEx, UPS, DHL.
- Industrial protective packaging included.
Professional FAQ & Selection Advice
- How to choose between standard and HART versions?
- Select HART when smart transmitters require remote diagnostics.
- What causes unstable analog signals?
- Poor grounding or mixed cable routing often creates noise.
- Is redundancy necessary for small systems?
- Not always. Critical processes benefit most from redundancy.
- How to confirm compatibility before purchase?
- Check controller generation and FIO rack configuration.
- Which terminal option should be selected?
- Choose surge protection when installed in high-noise environments.
Contact & Purchase Consultation
- Contact: +86 158 8020 0923
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Sarah Thompson
The AAI841 module is brand-new and delivered very quickly. Installation was simple, and it’s performing flawlessly in our Centum VP PLC system. The customer service team offered professional advice for setup and real-world integration.