Allen-Bradley 1756-L62S GuardLogix Processor Overview

The Allen-Bradley 1756-L62S is a GuardLogix processor for ControlLogix systems. This controller features 4 MB of standard user memory and 1 MB of dedicated safety memory. The 1756-L62S also includes 478 KB of I/O memory for tag storage. This GuardLogix controller system supports both SIL3 and PLe safety applications. The system clubs a primary controller with a safety partner for unified functioning. Consequently, the 1756-L62S provides certified safety control for demanding applications.

Memory Configuration

The Allen-Bradley 1756-L62S distributes memory across different tasks. Standard tasks use the 4 MB user memory for normal control programs. Safety tasks use the 1 MB dedicated safety memory for safety logic. I/O memory provides 478 KB for tag data storage. Therefore, the 1756-L62S separates standard and safety execution for integrity.

I/O Capacity

The Allen-Bradley 1756-L62S handles very large I/O configurations. Maximum total I/O reaches 128,000 points for comprehensive system control. When considering digital I/O specifically, the controller also supports 128,000 points. Looking at analog I/O, the 1756-L62S accommodates up to 4,000 channels. Therefore, this GuardLogix processor suits large-scale control systems with extensive I/O requirements across both discrete and analog signals.

Power & Current Specifications

The Allen-Bradley 1756-L62S draws power from the ControlLogix backplane. Current draw at 5.1 Volts DC is 1,200 milliamperes (1.2 A) . Meanwhile, current draw at 24 Volts DC is only 14 milliamperes . Power dissipation measures 3.5 Watts for efficient operation. Thermal dissipation reaches 11.9 BTU per hour . Isolation voltage rating is 30 Volts continuous . Therefore, the 1756-L62S places a moderate load on the system power supply.

Physical & Environmental Specifications

The Allen-Bradley 1756-L62S uses an open-style enclosure. The chassis provides the physical connection between the GuardLogix controller and other modules. The front panel includes smart and efficient key switches. These keys allow convenient operation of controller modes. Consequently, you can easily change between Run, Program, and Remote modes without software.

Safety Certification

The Allen-Bradley 1756-L62S holds critical safety certifications. The controller system is certified for use in safety applications. It supports SIL3 (Safety Integrity Level 3) per IEC 61508. In addition, it supports PLe (Performance Level e) per ISO 13849-1. Therefore, the 1756-L62S meets the highest safety ratings for industrial machinery and process safety.

Key Features & Benefits

• Dual memory banks – The 1756-L62S provides 4MB standard and 1MB safety memory.

• Safety certified – Supports SIL3 and PLe for high-integrity safety applications.

• Massive I/O capacity – Handles up to 128,000 digital I/O points.

• Primary and safety partner – The 1756-L62S works with a safety partner for redundancy.

• Front key switch – Allows convenient mode selection without software.

• ControlLogix platform – Integrates seamlessly with other 1756 modules.

Installation Guidelines

Follow these steps to install the Allen-Bradley 1756-L62S correctly. First, power down the ControlLogix chassis completely. Second, select the appropriate slot for the primary controller. Third, install the safety partner in the adjacent slot. Fourth, align the 1756-L62S with the card guides in the chassis. Fifth, push the module firmly into the backplane connector until fully seated. Finally, secure the module with the retaining screws.

Set the key switch to the desired mode before applying power. The 1756-L62S requires a ControlLogix power supply with sufficient capacity for the 1.2A draw at 5.1V.

Package Contents

Your shipment includes the following items:

• 1 x Allen-Bradley 1756-L62S GuardLogix processor (primary controller)

• 1 x Installation instructions manual

No safety partner module is included with the 1756-L62S . Therefore, you must order the safety partner separately. No programming software is provided.

Frequently Asked Questions (FAQ)

1. Does the 1756-L62S include the safety partner?
No. The Allen-Bradley 1756-L62S is the primary controller only. You must order the safety partner module separately for safety applications.

2. What safety ratings does this controller hold?
The 1756-L62S supports SIL3 per IEC 61508 and PLe per ISO 13849-1. Therefore, it suits high-risk safety applications.

3. What is the maximum I/O capacity?
The Allen-Bradley 1756-L62S handles up to 128,000 digital I/O points. Additionally, it handles up to 4,000 analog I/O channels.

4. How much memory does this processor have?
The 1756-L62S provides 4 MB for standard user tasks. Furthermore, it provides 1 MB dedicated for safety tasks. I/O memory adds 478 KB.

5. What is the current draw of this module?
The Allen-Bradley 1756-L62S draws 1,200 mA at 5.1V DC. At the same time, it draws only 14 mA at 24V DC. Verify your power supply has sufficient capacity.

Why Choose the Allen-Bradley 1756-L62S?

This GuardLogix processor delivers certified safety control for demanding applications. For starters, the Allen-Bradley 1756-L62S provides 4 MB of standard memory plus 1 MB of dedicated safety memory. The controller supports SIL3 per IEC 61508 and PLe per ISO 13849-1 for the highest safety integrity levels. I/O capacity reaches 128,000 digital points and 4,000 analog channels for large-scale systems. The 1756-L62S draws 1,200 mA at 5.1V and only 14 mA at 24V from the backplane. Power dissipation is only 3.5 Watts for efficient operation. The front panel key switch allows convenient mode changes without software. The controller works with a safety partner module (sold separately) for unified safety execution. The open-style enclosure mounts directly into any ControlLogix chassis. Most importantly, the 1756-L62S integrates seamlessly with other 1756 modules for complete safety and standard control.

Order the Allen-Bradley 1756-L62S today for your GuardLogix safety needs. Specifically, this processor is perfect for emergency stop systems, safety interlocking, light curtains, safety gates, and other SIL3/PLe applications in automotive, packaging, material handling, and process industries.