1746-IG16 - Allen-Bradley Digital DC Input Module

Allen-Bradley 1746-IG16 Digital DC TTL Input Module Overview

Key Technical Specifications

• Manufacturer & Brand: Allen-Bradley
• Series & Model: SLC 500 Series | 1746-IG16 TTL Input Module
• Input Type: Sixteen (16) Sourcing Input Channels
• Operating Voltage Range: 4.5 to 5.5 Volts DC (50mV ripple max)
• Signal Response Time: 0.25 ms (ON max), 0.5 ms (OFF max)
• Backplane Current: 140 milliamps at 5V DC
• Nominal Input Current: 3.7 mA per point at 5V DC
• Off-State Current: 4.1 mA maximum
• Power Dissipation: 1 Watt total (0.02W per point)

Performance & Safety Features

• This module delivers extremely fast signal processing for high-speed digital applications.
• It holds CSA and UL Class I, Division 2 certifications for hazardous environments.
• It provides 1500V optical isolation between field inputs and control logic.
• The module is built to withstand 30G shock and 2.5G vibration in demanding conditions.
• Operating temperature range is 32°F to 140°F (0°C to 60°C) at 5-95% humidity.

Installation & Wiring Guidelines

• The 1746-IG16 installs in one slot (except slot 0) of any SLC 500 chassis.
• Use the recommended 1746-RT25B Removable Terminal Block for easy wiring.
• Handle with Care: Hold only by the plastic ends to prevent electrostatic discharge (ESD) damage to circuits.
• Logic Note: This module uses inverted TTL logic; a low voltage (0.8V DC or less) signals an ON state.
• Keep signal wiring under 50 feet (15 meters) and separate from power/communication cables.

Frequently Asked Questions (FAQ)

• Q: What applications is the 1746-IG16 designed for?
  A: It is designed for high-speed TTL or BCD signal interfacing, such as connecting encoders, electronic sensors, or digital switches to an SLC 500 PLC.
• Q: Why is the response time so fast compared to other input modules?
  A: As a TTL module, it is optimized for logic-level signals, enabling sub-millisecond response critical for counting and high-speed sensing.
• Q: How should I handle the module to avoid damage?
  A: Due to ESD sensitivity, always hold by the plastic ends and avoid contact with circuitry or connectors.
• Q: What is the logic convention for an 'ON' state?
  A: It uses inverted logic. An input voltage between -0.2V and +0.8V DC is recognized as ON (logic 1).
• Q: What are your shipping and support policies?
  A: We ship from stock within 5 days via major carriers and support all products with a 30-day return guarantee.

For more details on the high-speed SLC 500 1746-IG16 TTL module, contact our sales team.
Contact Information Inquiries: sales@nex-auto.com , +86 153 9242 9628

Partner NexAuto Technology Limited : https://www.nex-auto.com/