Allen-Bradley 1734-IM4 POINT I/O Digital AC Input Module

Configured for AC discrete signal acquisition in POINT I/O networks, the Allen-Bradley 1734-IM4 (1734-IM4 Digital AC Input Module) provides direct electrical execution. The module accepts four AC input channels and processes field-state transitions through hardware and programmable digital filtering before transferring status data across the POINTBus backplane.

Suffix Breakdown & Model Matrix

The supplied documentation identifies a single fixed catalog number, 1734-IM4. No official suffix variations or ordering matrix are specified in the provided data.

Hardware Specifications

I/O Density Scaling in POINT I/O Architectures

The 1734-IM4 contributes four AC input channels within the modular POINT I/O platform. Multiple POINT I/O modules can be combined on a common backplane to increase total I/O density while maintaining a consistent POINTBus communication structure. Input state information is transferred through the backplane interface, with module current consumption specified as 75 mA at 5 VDC from the POINTBus. The configurable digital filter range of 0-65 ms allows adjustment of input response characteristics to match field signal conditions.

Frequently Asked Questions

Q: Does the 1734-IM4 include configurable input filtering?
A: Yes. The module provides a fixed hardware filter of 20 ms and a programmable digital filter adjustable from 0 ms to 65 ms.

Q: What backplane load does the module place on the POINTBus?
A: The specified POINTBus current consumption is 75 mA at 5 VDC.

Q: Which terminal bases are supported by the module?
A: The documented compatible terminal bases are 1734-TB, 1734-TBS, 1734-TOP, and 1734-TOPS.

Field Installation Guidelines

• Install the module on a properly grounded POINT I/O assembly and approved DIN rail system.

• Verify that field wiring voltage falls within the specified AC input operating range before energizing circuits.

• Route AC input wiring separately from high-current motor conductors and variable-frequency drive output cables.

• Terminate cable shields according to site grounding practices and avoid multiple shield grounding points unless required by plant standards.

• Confirm terminal base compatibility before module insertion.

• De-energize field circuits when performing wiring modifications or terminal maintenance.

• Inspect backplane connectors and terminal contacts for contamination or mechanical damage before installation.