Allen-Bradley ControlLogix 8-Channel Analog Input Module

Number of input channels: 8. Input ranges: 0-10.25V DC, ±10.25V DC, 0-5.125V DC, 0-20.5mA DC. Resolution: 15-bit for ±10V range, 16-bit for unipolar ranges. Isolation: 250V continuous reinforced isolation between inputs and backplane. Current draw: 500mA @ 5.1V DC. Power dissipation: 2.58W. Operating temperature range: 0°C to +60°C. Storage temperature range: -40°C to +85°C. Connector: 36-pin removable terminal block.

It supports multiple configurable input ranges for diverse field instruments. Sigma-delta conversion architecture delivers high noise immunity and measurement accuracy. It provides open-circuit detection, over-range/under-range alarms, and rate monitoring diagnostics. It supports single-ended, differential, and high-speed differential wiring modes. Output data is available in both integer and IEEE floating-point formats.

It is widely used in process control systems, temperature and pressure monitoring, flow measurement, level sensing, industrial instrumentation data acquisition, chemical processing, food and beverage production, and water treatment systems.

Measurement accuracy: ±0.1% full scale @ 25°C. Update rate: configurable from 20ms to 1s per channel. Common mode rejection ratio: 120dB @ 60Hz. Temperature drift: ±50ppm/°C.

It features standard single-slot ControlLogix form factor with metal shielding housing, 36-pin field terminal block, front panel status LEDs, calibration button, and high-speed backplane connector.

It receives analog voltage or current signals from field transmitters and sensors, amplifies and filters the signals, converts them into digital values through sigma-delta ADC, and transmits the processed data to the ControlLogix controller via the backplane bus for process control and monitoring.

Install in any available ControlLogix chassis slot. Use 1756-TBCH or compatible terminal base for field wiring. Use shielded twisted pair cables for analog signals, grounded at one end only. Calibrate the module after initial installation. Ensure proper separation from high-voltage power cables.