OVERVIEW

Official designation: Allen-Bradley 1746-ITB16 (SLC 500, Discrete Input Module)

The 1746-ITB16 is a high-speed discrete sinking input module for SLC 500 chassis, featuring sixteen 24V DC nominal channels. It is designed for fast industrial signal acquisition with a nominal input current of 8 mA at 24V DC.

KEY SPECS SUMMARY

Power: 5V DC backplane, 85 mA

Interfaces / Ports: 36-pin terminal block

Indicators: 16 green channel status LEDs

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500 I/O chassis

Limit: 16 discrete sinking inputs

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the nominal input current drawn by each channel of the 1746-ITB16 module at 24V DC?

A: The nominal input current is specified as 8 mA per channel at 24V DC.

Wiring & Installation:

Q: What type of wiring configuration is required for connecting input devices to the 1746-ITB16 sinking module?

A: Sinking modules require devices that source current, connecting the field device common to the positive voltage source.

Troubleshooting & Compatibility:

Q: How can the operational status of a specific input channel be quickly verified on the 1746-ITB16 module?

A: The module includes 16 green LEDs, one for each channel, indicating its real-time ON/OFF status.

Replacement & Upgrades:

Q: When upgrading from the 1746-ITB16, what should be considered regarding input type compatibility?

A: The replacement module must support the required high-speed 24V DC sinking input configuration.