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Allen Bradley 1756-ESMCAP ControlLogix Energy Storage Module

Allen Bradley ControlLogix Energy Storage Module (Capacitor-based).

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ManufacturerAllen Bradley

Part number1756-ESMCAP

Module Type Energy Storage Module

Technology Capacitor-Based

Application For ControlLogix L7 & GuardLogix L7 controllers

Voltage 5.1 VDC

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12-month warranty

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Worldwide delivery

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Veteran-owned

CAGE: 9NK75

Capacitor-based energy storage Replaces batteries in L7 controllers Saves program to NVS on power loss Embedded real-time clock Compatible with ControlLogix L7 Series

Product description

The Allen-Bradley 1756-ESMCAP is a capacitor-based ControlLogix Energy Storage Module (ESM) designed to replace batteries in ControlLogix L7 and GuardLogix L7 controllers. It ensures that the controller's program is saved to Nonvolatile Storage (NVS) memory in the event of a power failure and can also clear the NVS memory. This module includes an embedded real-time clock for time synchronization.

This energy storage module is essential for maintaining program integrity and controller state during power interruptions in critical industrial applications. It is commonly used in manufacturing, process control, and automation systems where continuous operation and data retention are paramount.

Stanlo Automation, your veteran-owned surplus distributor, offers the Allen-Bradley 1756-ESMCAP. We provide reliable and affordable surplus automation parts to keep your operations running seamlessly.

Technical specifications

Module Type	Energy Storage Module
Technology	Capacitor-Based
Application	For ControlLogix L7 & GuardLogix L7 controllers
Voltage	5.1 VDC
Current Draw	330 mA
Power Dissipation	13.3 W max
Operating Temp	0-60°C

Common applications

Industrial Automation

Process Control

Manufacturing

Critical Operations

Data Retention

System Uptime

Compatible systems

ControlLogix 5570 Series B Controllers ControlLogix L7 controllers GuardLogix L7 controllers

Also known as

Allen Bradley ControlLogix ESM 1756ESMCAP AB ControlLogix Capacitor Module

Replaces / compatible with

The 1756-ESMCAP is a capacitor-based energy storage module that serves as a replacement for battery backup in Allen-Bradley ControlLogix 5570 Series B controllers and L7 series controllers.

Technical note

Expert tip

This module requires a full charge before initial power-off to ensure program preservation; do not remove power until charging is complete.

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Frequently asked questions

Can the Allen Bradley 1756-ESMCAP module be removed after installation?

No, the Allen Bradley 1756-ESMCAP energy storage module cannot be removed or replaced once installed in a controller. It must be allowed to finish charging before power is removed from the controller to prevent loss of application programs.