1794-IB32 New Factory Sealed 1794IB32 FLEX I/O Ser A Input Module
PRODUCT DETAILS
1794-IB32 — FLEX I/O 32-Point 24V DC Sinking Digital Input Module
The 1794-IB32 is a 32-point sinking (NPN) digital input module for the FLEX I/O platform, reading 24V DC field signals from pushbuttons, limit switches, proximity sensors, and similar discrete devices. With 32 channels in one module, it consolidates a large input count into a single FLEX I/O position, mounted on a compatible 32-point terminal base for field wiring termination.
Specifications
| Parameter | Value |
|---|---|
| Part Number | 1794-IB32 |
| Platform | FLEX I/O (1794) |
| Input Points | 32 |
| Input Type | Sinking (NPN) |
| Nominal Voltage | 24V DC |
| Operating Voltage Range | 19.2–31.2V DC |
| Input Current (nominal) | 4.1 mA |
| Isolation Voltage | 50V continuous |
| FlexBus Current | 25 mA @ 5V DC |
| Compatible Terminal Bases | 1794-TB32, 1794-TB32S, 1794-TB62DS, 1794-TB62EXD4X15 |
| Operating Temperature | 0°C to 55°C |
High-Density Sinking Inputs for FLEX I/O
Sinking inputs expect a sourcing (PNP) field device — the sensor or switch supplies 24V to the input terminal, with current returning to the module's common. Thirty-two channels in one module makes this the right choice for distributed I/O nodes serving a large sensor population in a single physical area: a packaging machine with many part-presence sensors, a conveyor zone with multiple position switches, or any application where consolidating a high input count into one FLEX I/O slot reduces the number of modules and terminal bases needed in the node.
The module's compatibility with several different terminal base styles — including the 62-pin D-shell bases — means the same input module can pair with either conventional screw/spring terminal wiring or a pre-terminated connector harness, depending on how the installation's field wiring is built.
FAQ
Q: Can sourcing (PNP) sensors be wired to this sinking input module?
Yes — sourcing field devices are exactly what a sinking input module expects. PNP sensors supply 24V to the input terminal; the module's sinking circuitry handles the return path.
Q: Does this module require a specific terminal base, or will any FLEX I/O base work?
It requires a 32-point compatible base — the 1794-TB32, TB32S, TB62DS, or TB62EXD4X15. A 16-point or smaller base will not provide enough terminal positions for all 32 channels.
Q: Is the module individually isolated per channel?
No. The isolation rating applies between the field side and the backplane as a group — channels are not individually isolated from each other, so all connected field devices should share a common ground reference.
Q: Can this module be used in hazardous (classified) locations?
The standard 1794-IB32 carries certification for Zone 2 hazardous locations under applicable standards when installed per the manufacturer's guidelines — verify the specific certification scope against the installation's classified area requirements before specifying.