Allen Bradley 1715-TADIF16 Terminal Assemblies

Configured for high-density analog signal acquisition in Allen-Bradley ControlLogix and AADvance fault-tolerant platforms, the Allen-Bradley 1715-TADIF16 (1715-TADIF16 Termination Assembly – 16 CH AI Duplex) provides direct physical/electrical execution. The module terminates field I/O connections while delivering channel-level overcurrent protection and signal conditioning for dual-redundant analog input configurations.

Suffix Breakdown & Model Matrix

The catalog number 1715-TADIF16 follows standard Allen-Bradley 1715 Series redundant I/O architecture conventions:

• 1715: Designates the primary modular redundant I/O system family.
• TA: Identifies the hardware component as a Field Termination Assembly (TA).
• DIF16: Specifies a Duplex Analog Input (DIF) module interface with a 16-channel density rating.

Hardware Specifications

Industrial Control & Backplane Communication Properties

As an integral termination component within Allen-Bradley redundant I/O system architectures, the 1715-TADIF16 incorporates dedicated hardware scaling and bus protection features:

• Backplane Bus Communication Velocity: High-speed internal bus connections enable low-latency signal distribution to dual I/O processor modules across EtherNet/IP deterministic networks, supporting rapid fault recovery and time-synchronized input scanning.
• I/O Density Scaling: Integrates 16 duplex channels into a compact 8.4 cm footprint, allowing systematic expansion of field analog loops while maintaining galvanic isolation between field wiring and internal logic circuits.
• Firmware Flash Compatibility: Engineered to maintain hardware-level signal execution across variable processor firmware flashing cycles without losing channel calibration parameters or signal sampling accuracy.

Frequently Asked Questions

Q: What specific fuse hardware is required for channel-level field loop protection on the 1715-TADIF16?

A: Each channel requires a 50 mA, 125V, Type T slow-blow fuse designed for 1715-TASIF16 and 1715-TADIF16 field termination assemblies.

Q: What are the backplane power supply requirements during standard operation?

A: The assembly draws 260 mA @ 18...32 VDC from the system backplane with a maximum slew rate tolerance of 700 mA/s.

Field Installation Guidelines

Proper mechanical mounting and wiring practices ensure continuous operation and signal stability in high-vibration industrial environments:

• Mechanical Mounting and Fastening: Mount the unit onto the corresponding 1715 backplane structure. Secure field wiring terminals using a flathead screwdriver with a blade dimension of 0.4 x 2.0 mm (0.0156 x 0.0781 in.). Torque all terminal screws strictly to 0.5 N m (0.37 lb ft) to ensure gas-tight retention without stripping terminal threads.
• Field Cabling and Shielding: All 4-20 mA loop connections must utilize dedicated twisted-pair shielded wire. Ground cable shields at a single ground point on the system chassis to prevent earth loops from degrading analog sampling accuracy.
• Thermal Management: Maintain adequate vertical enclosure clearance to allow passive heat dissipation, keeping ambient operating temperatures within safe boundaries under maximum system power dissipation (4.0 W system, 0.075 W per field loop).