Product Summary
The 1746-ITB16 is a high-speed discrete input module for the SLC 500 platform. It captures rapid signals with a nominal 24VDC input. This module supports sink wiring and reads pulses up to 2 kHz. Its design ensures reliable data capture for time-critical automation tasks.
Product Procurement & Buyer Guide
This section helps procurement managers and engineers select the right module. The 1746-ITB16 solves key pain points for high-speed applications. It captures inputs with a signal delay of just 0.3 ms for On-state transitions. This speed is critical for precise timing in packaging or assembly lines.
You must verify your system voltage before purchasing this module. The unit accepts a voltage range of 10-30 VDC. It operates at a nominal voltage of 24VDC. This flexibility allows it to work with standard industrial sensors. The module draws only 0.085 A from the 5V backplane.
Check your processor compatibility to ensure full performance. The 1746-ITB16 works with any SLC 500 processor. It achieves optimal speed with SLC 5/03 or 5/04 controllers. These processors use discrete input interrupt instructions with 100 µsec polling. This setup reads pulse frequencies up to 1 kHz.
For gray code encoder signals, the frequency reaches up to 2 kHz. The recommended encoder for this task is the Allen-Bradley 845D Absolute Gray Code Encoder. This pairing provides precise positional feedback for motion control. The module’s 16 channels accept connections from multiple sensors.
The module uses a sink wiring configuration for its inputs. This common wiring method simplifies integration with existing field devices. Its removable terminal blocks make installation and replacement easy. You do not need to disconnect wires to swap the unit. This feature reduces downtime during maintenance or upgrades.
The 1746-ITB16 occupies a single slot in a 1746 chassis. It attaches directly to the chassis backplane for power and data. The module does not support removal under power (RIUP). You must remove power from the chassis before installing this unit. This safety step protects the module and your system.
Expert Technical Evaluation & Performance Review
This review provides a strict engineering critique of the module’s capabilities. The 1746-ITB16 excels in capturing fast digital signals. Its maximum On-state signal delay is 0.3 ms. The Off-state delay is 0.5 ms. These speeds enable the module to track rapid switching events.
The module’s input circuitry includes filter components and optical coupling. This design reduces electrical noise from the factory floor. Clean signal capture prevents false readings in your control logic. The module stores input data in its data image table. All SLC 500 processors can retrieve this data using Ladder Logic.
The unit has a maximum Off-state voltage of 5 VDC. The maximum Off-state current is 1.5 mA. These specifications ensure clear distinction between On and Off states. The nominal input current is 8 mA at 24VDC. This current draw is standard for industrial discrete sensors.
The module operates reliably in harsh environments. Its temperature range is 32 to 140 °F. It functions in noncondensing relative humidity from 5 to 95%. These ratings make it suitable for many industrial settings. The maximum power dissipation is 3.6 W, which is low for its capability.
Troubleshooting is straightforward with the built-in LED indicators. Each LED shows the input status for its respective channel. This visual feedback helps technicians quickly identify signal issues. The module’s sharing-based hardware saves cost and space. It combines digital and analog I/O on a single platform.
Logistics & Standard Packaging Details
- One (1) Allen-Bradley 1746-ITB16 Fast Response Input Module
- One (1) Removable Terminal Block (RTB)
- One (1) Installation Instructions Manual
We ship all orders for express delivery via FedEx, UPS, and DHL. This ensures fast and reliable transit for your critical components.
