ABB P8151B Analog input module

Specific Parameters

Input Parameters
Input Type: Thermocouple (J, K, T, E, R, S, B types), RTD (PT100, PT1000, Cu50), DC voltage (0-10V, 0-5V), DC current (4-20mA, 0-20mA)
Number of Input Channels: 8 channels (independently isolated)
Resolution: 16-bit
Accuracy: ±0.1% full scale (thermocouple/RTD); ±0.05% full scale (voltage/current)
Sampling Rate: 10Hz (single channel); 80Hz (all channels synchronous)
Cold Junction Compensation: Built-in Pt1000 sensor, compensation accuracy ±0.5°C
Electrical Parameters
Supply Voltage: 24VDC (±10%)
Power Consumption: ≤5W under normal operation; ≤8W at maximum load
Isolation Level: 2.5kVAC between channels, between channel and ground (1 minute)
Common Mode Rejection Ratio: ≥100dB (50/60Hz)
Differential Mode Rejection Ratio: ≥80dB (50/60Hz)
Environmental & Mechanical Parameters
Operating Temperature: -20°C to 60°C
Storage Temperature: -40°C to 85°C
Relative Humidity: 5% to 95% (non-condensing)
Protection Class: IP20 (module itself)
Dimensions: 45mm (W) × 100mm (H) × 160mm (D)
Weight: Approximately 300g
Mounting Method: 35mm standard DIN rail mounting

Product Performance

P8151B adopts a 16-bit high-precision A/D converter to ensure high accuracy and repeatability of analog signal acquisition, meeting the needs of high-precision industrial process monitoring. The module features independent channel isolation design to effectively suppress on-site electromagnetic interference, with common mode rejection ratio and differential mode rejection ratio reaching industrial high standards, suitable for high-interference industrial environments. It has a built-in cold junction compensation function to realize automatic temperature compensation for thermocouple input signals, eliminating the need for external compensation circuits.

Supporting hot-swap operation, module replacement can be completed without stopping the system, reducing downtime and improving system availability. It integrates comprehensive self-diagnosis functions, which can monitor power supply abnormalities, channel faults, sensor open/short circuits and other statuses, and upload fault information in real-time through the communication interface, facilitating quick location and maintenance. It is seamlessly compatible with ABB control systems, supporting high-speed data transmission through protocols such as PROFIBUS DP and EtherNet/IP, with data update delay ≤100ms.