Overview
Manuals
manual
Signal Configuration
Installation Guidance
Features:
- Sixteen current analog input channels
- ±20 mA, 4–20 mA, 0–1 mA, and 0–20 mA ranges
- Sigma-delta A/D conversion with 640 nA resolution
- Selectable 6 to 250 Hz input filters
- 500 Vac backplane isolation for one second
- 1746-RT25G removable terminal block
1746-NI16I adds sixteen current-input channels to an SLC 500 chassis and converts industrial transmitter signals into processor-readable data.
Each channel can be configured for its required current range, data format, and filter frequency. The module consumes 125 mA at 5 Vdc and 75 mA at 24 Vdc from the backplane.
Installation requires the official terminal block, correct shield termination, and an SLC I/O slot other than slot 0. Channel scaling and diagnostics must match the controller program.
Model: 1746-NI16I
Function: 16-channel current analog input
Official migration: Two 5069-IF8 modules for one 1746-NI16I
Allen Bradley 1746-NI16I SLC 500 Analog I/O Module Manuals(Datasheets), Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1746-NI16I Official Manuals/Datasheets/Link
Use the official manual to verify channel configuration words, current ranges, terminal assignments, grounding, filter selection, and diagnostic status before commissioning.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Signal Configuration
The 1746-NI16I supports four selectable current ranges: ±20 mA, 4–20 mA, 0–1 mA, and 0–20 mA. Each channel uses sigma-delta conversion and can be assigned one of the supported digital filters from 6 to 250 Hz.
The official data formats include engineering units, proportional counts, scaled-for-PID, and raw/proportional data. The chosen format, scaling logic, and transmitter loop range must agree with the SLC application program.
Resolution: 640 nA input resolution
Input impedance: 249 Ω
Maximum input: ±30 mA
Installation Guidance
Mount the module in any SLC 500 I/O chassis slot except slot 0. Use the 1746-RT25G removable terminal block and shielded cable such as Belden 8761 or equivalent, following the official separation, grounding, and shield-termination guidance.
Before power-up, confirm that every current loop is within the allowed common-mode and input limits. Set the channel enable bits, ranges, filter frequencies, and data formats before validating readings in the processor image table.
For a migration to Compact 5000 I/O, Rockwell Automation identifies two 5069-IF8 modules for one 1746-NI16I. The migration requires rewiring and software review; it is not a drop-in replacement.
