Allen-Bradley
Capacitor Energy Storage 1756-ESMCAP Allen Bradley
In stock, ready to ship
Manufacturer: Allen-Bradley
Product No.: 1756-ESMCAP
Product Type: Energy Storage Module
Product Origin: USA
Payment: T/T
Weight: 1800g
Shipping port: Xiamen
Warranty: 12 months
Yes, we provide a 30-day money-back guarantee for all purchases.
Yes, all items come with a 12-month warranty from the date of shipment.
Product Overview
The Allen-Bradley 1756-ESMCAP is a capacitor-based energy storage module (ESM) for ControlLogix 5570 controllers. It replaces traditional batteries, providing power to flush volatile controller memory to non-volatile storage during power loss events while eliminating battery maintenance requirements.
Key Specs
- Compatibility: ControlLogix 5570 (1756-L7x) controllers
- Current draw: 330 mA @ 5.1 V DC
- Power dissipation: 13.3 W max
- Operating temperature: 0 to 60 °C
- Hold-up time: 12 days @ 20 °C, 10 days @ 40 °C, 7 days @ 60 °C
- Weight: 0.152 kg
- Enclosure type: Open-style
Why Choose This
- Maintenance-free capacitor technology eliminates battery replacement schedules
- Protects controller programs and data during unexpected power loss
- Maintains WallClockTime for up to 12 days during power disconnection
- Charges fully within 2 minutes of chassis power application
Common Questions
- Is it compatible with 1756-L6x controllers? No, the 1756-ESMCAP is designed for 1756-L7x (ControlLogix 5570) series controllers only.
- How long does it take to charge? The ESM charges for a maximum of 2 minutes after power application, indicated by the CHRG status message.
- Can it be removed while powered? No, removing the ESM while the controller is powered triggers a minor fault and risks losing the application program.
Mounting Steps
- Align the ESM with the controller slot and slide forward gently until it snaps into place.
- Install the controller with ESM into an energized chassis to begin charging.
- Wait for the ESM Charging or CHRG message to clear before removing power.
- Verify the controller OK status indicator shows green.
- Monitor ESM status via the controller display or Studio 5000 diagnostics.
Buying Advice
- Order the 1756-ESMCAP as a spare for every 1756-L7x controller in service.
- For enhanced security applications, consider the 1756-ESMNRM non-removable variant.
- Verify controller firmware compatibility: requires version 18 or higher for proper ESM management.