AB 1753-IB16 Digital Input Module

Allen-Bradley 1753-IB16 GuardPLC Digital Input Module Overview

The Allen-Bradley 1753-IB16 is a 16-point, 24V DC digital input module designed for use within the GuardPLC safety system. It serves as a crucial interface for bringing safety-rated digital input signals from field devices (like emergency stop buttons, safety light curtains, or safety interlock switches) into the GuardPLC controller. This module is part of Rockwell Automation's solution for machine and process safety applications, offering high reliability and compliance with international safety standards. It also features integrated Ethernet communication for seamless integration into a safety network.

Product Detailed Description

• Function:

• Receives 16 independent 24V DC digital input signals from safety-related field devices.

• Monitors the status of these input signals (e.g., whether a safety gate is open or closed, or an E-stop is pressed).

• Transmits this safety-critical input data over the integrated GuardPLC Ethernet network to the GuardPLC controller.

• Performs self-diagnostics to ensure its own integrity and the reliability of the input signals.

• Features built-in pulse test sources (4 of them) for checking the wiring integrity of input devices without requiring external test equipment. This is a key safety feature for detecting short circuits to ground or power, or open circuits.

• Safety Compliance: Designed to meet rigorous international safety standards for programmable electronic systems, such as IEC 61131, EN ISO 13849, and IEC 61508. This ensures its suitability for applications requiring high Safety Integrity Levels (SIL) or Performance Levels (PL).

• Integrated Communication: Equipped with two integrated 10/100 Mbps Ethernet ports with an internal switch. This allows for daisy-chaining modules and simplifies network cabling within a GuardPLC system, facilitating fast and reliable safety communication.

• Diagnostics: Features status indicator LEDs on the front panel for each input, providing immediate visual feedback on the state of the inputs and module diagnostics. This greatly aids in troubleshooting.

• Robust Design: Built for industrial environments, ensuring reliability and durability.

Product Parameters

• Manufacturer: Allen-Bradley / Rockwell Automation

• Part Number/Catalog No.: 1753-IB16

• Product Type: Digital Input Module

• Product Series: GuardPLC Distributed I/O

• Digital Inputs: 16 (safety-rated)

• Operating Voltage: 24V DC

• Response Time: Typically ≤ 10 ms (This is the time from input change to detected change at the controller, subject to network and controller scan times).

• Current Consumption: 0.8 A max.

• Input Switching Point: 7.5V (typical threshold for signal detection).

• Input Switching Time: 250 µs (micro-seconds, related to how quickly the input signal transitions and is recognized).

• Pulse Test Sources: 4 (integrated, for wiring diagnostics).

• GuardPLC Ethernet Interfaces: 2 x RJ-45, 10/100BaseT (with 100 Mbps) with integrated switch.

• Output Voltage Range (for pulse test): 24V

• Output Current (for pulse test): 60 mA (max for pulse test sources).

• Weight: Approx. 0.7 kg

• Dimensions (approximate): 114 mm (H) x 152 mm (W) x 66 mm (D)

• Mounting: DIN rail mountable (requires zinc-plated yellow-chromate steel DIN rail for proper grounding).

• Fusing: Requires external protection with a 4 A slow-blow fuse.

• Environmental Protection: Designed as "open-type" equipment, meaning it must be mounted within a suitable enclosure that provides environmental and safety protection (e.g., complying with flame spread rating of 5VA, V2, V1, V0 if non-metallic, and accessible only by tool).

• ESD Sensitivity: Sensitive to electrostatic discharge.

Product Advantages

• High Safety Integrity: Designed for safety applications, meeting global safety standards (IEC 61131, EN ISO 13849, IEC 61508), enabling the creation of high-PL/SIL safety systems.

• Simplified Safety Wiring: Integrates safety inputs directly, often reducing complex hard-wiring traditionally associated with safety circuits.

• Integrated Ethernet Communication: Two built-in Ethernet ports with a switch simplify network topology (daisy-chaining) and enable fast, reliable safety communication within the GuardPLC system.

• Enhanced Diagnostics: Comprehensive diagnostics including input status LEDs and fault reporting help identify and troubleshoot issues quickly, minimizing downtime.

• Pulse Test Sources: Unique integrated pulse test sources allow for constant monitoring of field device wiring integrity (detecting shorts or opens), enhancing safety and reducing the need for external testing devices.

• Ease of Integration: Seamlessly integrates with the GuardPLC controller and other GuardPLC modules, providing a cohesive safety solution.

• Robust for Industrial Environments: Built to withstand typical industrial conditions, ensuring long-term reliability.

Precautions

• Safety Critical Application: This module is for safety applications. Always adhere strictly to Rockwell Automation's safety guidelines, relevant safety standards (e.g., EN ISO 13849, IEC 61508), and local regulations for installation, configuration, and maintenance.

• Proper Enclosure: As "open-type" equipment, it MUST be installed within a suitably designed industrial enclosure that provides adequate environmental protection (e.g., dust, moisture, temperature) and prevents unauthorized access to live parts. The enclosure must have suitable flame-retardant properties.

• ESD Sensitivity: The module is sensitive to electrostatic discharge. Always use proper ESD protection (e.g., wrist strap, static-safe workstation) when handling the module to prevent damage.

• Correct Power and Wiring:

• Ensure the 24V DC power supply is stable and within the specified range.

• Protect the module with a 4 A slow-blow fuse.

• CRITICAL: Do NOT reverse the L+ and L- terminals; this will cause damage to the module as there is no reverse polarity protection.

• Follow all wiring diagrams meticulously for inputs, power, and communication.

• Mounting and Cooling:

• Mount the module horizontally on zinc-plated yellow-chromate steel DIN rail for proper grounding.

• Ensure proper ventilation: provide at least 100 mm (3.94 in.) clearance above and below the module. Avoid mounting above heating devices.

• Firmware and Software: Ensure compatibility between the module's firmware and the version of GuardPLC programming software (e.g., RSLogix GuardPLUS!) being used.

• Qualified Personnel: Installation, configuration, and maintenance should only be performed by qualified and authorized personnel familiar with industrial safety systems.

Product Applications

The Allen-Bradley 1753-IB16 GuardPLC Digital Input Module is primarily used in industrial safety applications where reliable monitoring of discrete safety devices is required.

• Machine Safety:

• Monitoring safety gates, light curtains, emergency stop buttons, two-hand control devices, and safety mats.

• Interlocking machine operations based on the state of safety devices.

• Automotive Industry:

• Safety systems for robotics, assembly lines, and welding cells.

• Material Handling:

• Safety interlocks for conveyors, automated guided vehicles (AGVs), and stacking equipment.

• Packaging and Palletizing:

• Safety control for packaging machinery, wrappers, and palletizers.

• Food & Beverage Industry:

• Safety applications in processing and packaging lines, often in washdown environments (when housed in appropriate enclosures).

• General Manufacturing:

• Any industrial process or machine requiring a safety-rated input interface for its safety control system.

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