AI835A 8-channel analog input module

AI835A is an analog input module from ABB with the part number 3BSE051306R1, primarily designed for thermocouple and mV signal measurements. Here is its detailed information:

Basic Parameters
- Module Type: 8-channel analog input module
- Signal Specifications: Supports -30mV to +75mV linear input, compatible with thermocouple types including B, C, D, E, J, K, L, N, R, S, T, and U.
- Resolution: 15 bits
- Input Impedance: Greater than 1MΩ
- Isolation Mode: Group isolation and ground isolation
- Accuracy: Maximum error of 0.1% of full scale
- Temperature Drift: Typical 5ppm/°C, maximum 7ppm/°C
- Update Cycle Time: 280 + 80 × (number of active channels) ms at 50Hz; 250 + 70 × (number of active channels) ms at 60Hz
- Maximum Field Cable Length: 600 meters
- Common Mode Rejection Ratio: 120dB at 50Hz and 60Hz
- Normal Mode Rejection: Greater than 60dB at 50Hz and 60Hz
- Rated Insulation Voltage: 50V
- Dielectric Test Voltage: 500V AC
- Power Consumption: 1.6W
- Current Consumption: 75mA for +5V Modulebus, 50mA for +24V Modulebus
Functional Features
- Cold Junction Compensation: Channel 8 can be designated as the cold junction (ambient) temperature measurement channel, serving as the cold junction compensation channel for channels 1 to 7. The junction temperature can be measured locally at the MTU screw terminals or at a remote connection unit. Users can also set a fixed junction temperature for the module.
- Open Circuit Monitoring: Capable of monitoring inputs to promptly detect wire breakage or open circuit issues.
Application Scenarios
- Suitable for various scenarios such as temperature measurement, process control, data acquisition, and machine automation. It can connect to multiple thermocouple sensors to monitor temperature-related parameters.