Description
Allen-Bradley 1746-ITB16 SLC 500 High-Speed Input Module
The Allen-Bradley 1746-ITB16 is a high-speed 24VDC sinking input module for SLC 500 systems. It delivers exceptional response times for rapid switching applications like encoder monitoring. For complete technical specifications and installation guidelines, download the product manual here.
Key Technical Specifications
Brand: Allen-Bradley
Model: 1746-ITB16
Module Type: 24VDC Fast Response Sinking Input
Number of Inputs: 16 points (1 group)
Nominal Input Voltage: <span style=”color:red;”>24VDC</span>
Operational Voltage Range: 10 – 30V DC
Backplane Current Draw: 85 mA at 5V DC
Response Time: ON in 0.3 ms, OFF in 0.5 ms
Off-State Leakage Current: 1.5 mA max
Nominal Input Current: 8 mA at 24V DC
Maximum Power Dissipation: 3.6 Watts
Performance & Environmental Ratings
Max Input Frequency: 1 kHz standard, 2 kHz with Gray Code encoder
Noise Immunity: Optical isolation and filter circuitry on all channels
Operating Temperature: 0 to 60 °C (32 to 140 °F)
Storage Temperature: -40 to 85 °C (-40 to 185 °F)
Humidity Tolerance: 5-95% non-condensing
Vibration Resistance: 2.5G at 57-2000 Hz
Shock Resistance: 30G operational
Frequently Asked Questions (FAQ)
What makes this a “high-speed” input module?
Its ultra-fast response time of 0.3 ms ON and 0.5 ms OFF allows it to reliably read very fast pulse signals.What is the maximum pulse frequency it can read?
With an SLC 5/03 or 5/04 processor, it can read up to 1 kHz, and up to 2 kHz when using a Gray Code encoder.Can I use this module with a standard SLC 5/02 processor?
Yes, it is compatible with all SLC 500 processors, but the maximum readable frequency may be lower.What does “sinking” wiring configuration mean?
The input point provides a path to ground (sinks current) when an active field device (like a sensor) sources current to it.Does this module provide noise protection for industrial environments?
Yes, it includes optical isolation and filter circuitry on each channel to ensure signal integrity.
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