Allen-Bradley 1746-NI4 SER.A SLC 500 Analog Input Module, 4-Channel, No Cover

Allen‑Bradley 1746‑NI4 Series A is a compact analog input module for the SLC 500 PLC family, providing four high‑resolution analog channels for precise monitoring of voltage or current signals in industrial automation applications. This unit is supplied without the front cover. Manufacturer: Allen‑Bradley (Rockwell Automation) Manufacturer Part Number: 1746‑NI4 Series: SLC 500 Module Type: Analog Input Module Revision: Series A Number of Input Channels: 4, single‑ended Analog Signal Types: Voltage or Current, software selectable per channel Voltage Input Ranges: ±10 V DC, 0–10 V DC, 1–5 V DC Current Input Ranges: 0–20 mA, 4–20 mA Input Resolution: 16 bits (including sign) Input Impedance (Voltage): Approximately 1 MΩ Input Impedance (Current): 250 Ω nominal Overall Accuracy: ±0.25% of full scale at 25 °C Update Time: Approximately 512 µs per channel Isolation: No channel‑to‑channel isolation Backplane Isolation: 500 V DC Backplane Current Draw: Approx. 85 mA at 5 V DC, 40 mA at 24 V DC I/O Connection Type: 20‑pin removable terminal block Wiring Method: Screw terminals Data Encoding: Two’s complement binary LED Indicators: Module status LED Slot Requirement: 1 SLC 500 I/O slot Mounting: Chassis‑mounted Operating Temperature Range: 0 to 60 °C (32 to 140 °F) Storage Temperature Range: ‑40 to 85 °C (‑40 to 185 °F) Operating Humidity: 5 to 95% non‑condensing Certifications: UL, cUL, CE, CSA Dimensions (HxWxD): Approx. 138 x 35 x 145 mm Weight: Approx. 0.32 kg Front Cover: Not included Country of Manufacture: United States Please review pictures carefully and let us know if you have any questions!