ABB 07LE90 | Data Buffer Battery Module 3V Lithium
ABB 07LE90 | Data Buffer Battery Module 3V Lithium - Image 2
ABB 07LE90 | Data Buffer Battery Module 3V Lithium - Image 3

ABB 07LE90 | Data Buffer Battery Module 3V Lithium

  • Model: 07LE90
  • Brand: ABB
  • Series: Battery Series
  • Core Function: Provides continuous power to maintain data integrity in industrial control systems during power loss.
  • Type: Data Buffer Battery
  • Key Specs: 3V Lithium, 15mm x 51mm physical dimensions, designed for data retention.
Category: SKU: ABB 07LE90

Description

Key Technical Specifications

  • Product Name: ABB 07LE90 Data Buffer Battery
  • Manufacturer: ABB
  • Product Type: Battery Module
  • Chemistry: Lithium (3V)
  • Dimensions: 15 mm (Depth) x 51 mm (Height) x 20 mm (Width) (approximate, verify with manual)
  • Application: Data buffering for PLCs and industrial controllers
  • Battery Type: Coin cell or cylindrical (specific type may vary by batch)
  • Operating Temperature: -20°C to 60°C (typical range for industrial batteries)

 

Product Introduction

The ABB 07LE90 is a critical power component designed to safeguard volatile memory in ABB industrial controllers. When the main power is interrupted, this battery supplies a stable 3V output to retain essential configuration and runtime data, preventing data loss and system reprogramming upon power restoration.Engineers rely on this module for its high energy density and long shelf life, ensuring that process parameters and control logic remain intact during brief power outages or scheduled maintenance. While ABB has discontinued this specific model, it remains a vital part for maintaining legacy automation systems where data continuity is paramount.

Installation & Configuration Guide

⚠️ Safety First: Disconnect all power sources before beginning installation.Phase 1: Preparation (10 Minutes)

  1. Verify the physical dimensions (refer to the dimensions section below) to ensure the battery fits in the designated slot.
  2. Gather necessary tools: small screwdriver, anti-static wrist strap, and replacement battery (if not included).
  3. Safety Check: Ensure no static electricity is present to avoid damaging sensitive electronics.

Phase 2: Removal (5-10 Minutes)

  1. Power down the control system and open the module housing.
  2. Locate the battery compartment. Some models may require removing a retaining clip or unscrewing a cover.
  3. Carefully extract the old battery. Note the orientation (positive/negative polarity) for reinstallation.

Phase 3: Installation (10 Minutes)

  1. Insert the new 07LE90 battery, ensuring the correct polarity (+/-) is aligned with the markings on the holder.
  2. Secure the battery compartment cover or retaining clip.
  3. Close the module housing and ensure all screws are tightened.

Phase 4: Power-On & Test (10 Minutes)

  1. Restore power to the control cabinet.
  2. Verification: Monitor the system status indicators. A functioning battery will typically show a solid green LED or a specific “Data OK” status in the system diagnostics.

 

Troubleshooting Quick Reference

Symptom Likely Cause Recommended Action
Data Loss After Power Cycle Battery discharged or dead Replace the 07LE90 battery immediately.
System Fault LED On Low battery voltage Check battery health; replace if voltage is below 2.5V.
Configuration Reset Physical connection issue Re-seat the battery in the holder; check for corrosion.
No Power to Module Incorrect installation Verify battery polarity and secure connection.

 

Dimensions, Mounting & Wiring Notes

  • Dimensions: 15 mm (Deep) x 51 mm (High) x 20 mm (Wide) (verify with equipment manual)
  • Mounting: Surface mount or holder clip (specifics depend on the host controller design)
  • Wiring: This is a non-rechargeable, non-user-serviceable battery. No wiring is required beyond proper insertion into the terminal block.

FAQ

1. What is the 07LE90 used for?
The 07LE90 is a data retention battery. It powers the volatile memory in ABB controllers (like PLCs) to preserve critical data, such as program code and runtime variables, when the main power is turned off.2. Is this battery still available from ABB?
No. ABB has discontinued the 07LE90. We offer this as a surplus or used component. New Surplus (NS) condition is available but limited in quantity.3. How long does the 07LE90 battery last?
Battery life varies based on environmental conditions and usage, but typically ranges from 2 to 5 years. Once the battery voltage drops below a critical threshold (usually 2.5V), data retention is no longer guaranteed.4. I’m seeing a “Battery Low” error. What should I do?
Replace the 07LE90 battery as soon as possible. Continuing to operate with a low battery increases the risk of catastrophic data loss if a power outage occurs.5. Can I use a generic 3V lithium battery instead of the 07LE90?
It is not recommended. While the voltage may match, the physical dimensions, connector type, and specific voltage tolerance of the 07LE90 are critical for proper operation in the host controller. Using a mismatched battery may cause connection issues or damage the circuitry.6. What happens if I install the battery backwards?
Installing the battery backwards will likely cause a short circuit, potentially damaging the battery holder and the controller’s memory circuitry. Always verify the polarity markings (+ and -) before insertion.7. I have a newer ABB system. Is there a modern replacement?
Yes. Check with the manufacturer for the current recommended data buffer module for your specific controller model. Common modern replacements use similar 3V lithium chemistries but come in different form factors.

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