Allen Bradley 1715-IB16D 16-Point Digital Input Module

The Allen Bradley 1715-IB16D serves as the primary 1715-IB16D Digital Input Module utilized to execute 24 VDC discrete signal acquisition across 1715 Redundant I/O platforms. The module provides sixteen input channels, accepts 18-32 VDC field signals, and transfers input state data to the redundant backplane architecture.

Suffix Breakdown & Model Matrix

The supplied documentation identifies 1715-IB16D as a fixed catalog number. No official suffix breakdown or ordering matrix is specified in the provided data.

Hardware Specifications

I/O Density Scaling and Backplane Integration

The 1715-IB16D increases input density by providing sixteen discrete input channels within a single redundant I/O slot. Communication between the module and the redundant backplane occurs through the 1715 platform architecture, enabling input state transfer to the controller environment. Module compatibility is dependent on the specified terminal base assemblies, which also determine the available channel isolation characteristics.

With the 1715-TASIB16D termination assembly installed, no isolation exists between individual I/O channels. When the 1715-TADIB16D termination assembly is used, 50 V isolation is provided between individual ports. The I/O-to-backplane interface is type tested at 500 V AC for 60 s.

Frequently Asked Questions

Q: Which terminal base assemblies are supported by the 1715-IB16D?
A: The module requires either a 1715-TASIB16D or a 1715-TADIB16D terminal base assembly.

Q: What input voltage range is accepted by the module?
A: The module accepts discrete DC input signals from 18 VDC to 32 VDC, with a nominal operating voltage of 24 VDC.

Q: Does the module provide channel-to-channel isolation?
A: Isolation depends on the installed termination assembly. The 1715-TADIB16D provides 50 V isolation between individual ports, while the 1715-TASIB16D does not provide isolation between channels.

Field Installation Guidelines

• Mount the module on a properly secured DIN rail within an enclosure suitable for IP20 equipment.

• Verify that the selected terminal base assembly matches the required channel isolation strategy before installation.

• Tighten field wiring terminals to 0.5 N-m torque.

• Route discrete input wiring separately from high-current power conductors to reduce electrical interference.

• Maintain shield grounding practices according to site standards when shielded field cables are used.

• Confirm field signal voltages remain within the specified 18-32 VDC operating range before energizing the module.

• Inspect terminal seating and backplane engagement before commissioning redundant I/O operation.