ABB AI835 Analog Input Module
Description
ABB AI835 Analog Input Module is an industrial analog input module designed for thermocouple and millivolt signal measurement, featuring 8 configurable differential input channels for use in automated control systems.
| Specification | Value |
|---|---|
| Number of Input Channels | 8 differential channels |
| A/D Resolution | 15 bits |
| Input Impedance | >1 MΩ |
| Common Mode Rejection Ratio (CMRR) | 120 dB (50/60 Hz) |
| Nuclear Magnetic Resonance Rejection | >60 dB (50/60 Hz) |
| Maximum Field Cable Length | 600 meters |
| Operating Temperature | -20 to 60 degrees Celsius |
| Protection Rating | IP30 |
| Power Supply | Dual redundant DC 9-36V (typical 24V), with reverse polarity protection |
| Power Isolation Voltage | DC 1500V |
| Communication Standard | Profibus DP bus |
| Mounting Type | Standard 35mm industrial rail |
Key Features:
- Configurable measurement ranges per channel, supporting -30 to 75 millivolt linear signals and multiple thermocouple types (B, C, E, J, K, N, R, S, T)
- Channel 8 can be configured as a cold junction temperature measurement channel (4-wire Pt100 RTD) to compensate thermocouple measurement errors
- Built-in open-circuit monitoring to detect input signal disconnections in real time
- Enhanced protection including 4000V lightning protection, 1.5A overcurrent protection, and 600W surge protection
- 9-pin Sub-D jack connector for reliable bus communication
Applications:
- Manufacturing industry: Monitor production line temperature, pressure, and flow parameters to ensure process stability
- Energy industry: Real-time monitoring of generators, transformers, and pipeline equipment operating status
- Building and transportation: Control lighting, HVAC, and security systems in smart buildings; monitor traffic signal and rail equipment status
- Environmental protection: Monitor water treatment and air purification equipment operating parameters to ensure compliance with emission standards
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