- Provides 32 current-sinking inputs for 24V DC discrete field signals.
- Separates the inputs into four isolated eight-point groups with one common per group.
- Uses a keyed 40-pin field connector instead of a conventional SLC removable terminal block.
Allen-Bradley 1746-IB32 is a high-density digital input module designed for the SLC 500 chassis-based control platform.
It receives sourcing-device signals through four separately commoned input groups and transfers their discrete states to the installed SLC processor through the chassis backplane.
Before installation or replacement, verify the hardware Series, compatible chassis and processor, backplane loading, field-supply polarity, connector pinout, common-group isolation, and existing input-address assignment.
Availability, condition, price, and shipping time for Allen-Bradley 1746-IB32 are confirmed during quotation.
Allen-Bradley 1746-IB32 Digital Input Module Manuals, Datasheets, Links
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.
- Series A, B, and C modules contain one nonreplaceable 2.5 A fuse for each common group.
- Series D modules are unfused, so external circuit protection must match the installed system design.
- Series D and later use documented backplane-current and thermal-dissipation values that differ from Series A–C.
- The keyed 1746-N3 female connector accepts the supplied crimp contacts for 22–26 AWG conductors.
- The two common pins within each eight-point group are internally connected, while the four groups remain isolated.
- Allen-Bradley 1492 prewired cables and interface modules can replace individually crimped field wiring when group isolation is preserved.
- Disconnect chassis power before installing, removing, or wiring the module.
- Install the module in an I/O slot; the first chassis slot is reserved for the processor or a 1747-ASB remote-I/O adapter.
- Route field wiring away from the module and cover unused chassis slots with a 1746-N2 slot filler.
- Interfacing PNP photoelectric sensors with SLC 500 discrete-input logic.
- Receiving switching states from compatible PNP inductive proximity sensors.
- Receiving discrete outputs from compatible PNP ultrasonic and capacitive sensors.