LIEBERT/EMERON Emerson Processor Circuit Board Liebert/emerson 02-790870-20CONTROL/PROCESSOR P/l
( Brand: Liebert/emeron ), ( Manufacturer Part Number: 02-790870-20 ), ( Part Type: Circuit Board )
Review LIEBERT/EMERON Liebert/emerson 02-790870-20control/processor Circuit Board Rev P/l
The **Liebert/Emerson 02-790870-20 Control/Processor Circuit Board** is a high-performance, mission-critical component designed to serve as the intelligent backbone of Emerson s advanced Liebert UPS (Uninterruptible Power Supply) systems, specifically tailored for the **Liebert GXT, PXT, and EXT series**, as well as select Emerson power distribution units. This precision-engineered printed circuit board (PCB) integrates a sophisticated embedded control processor, real-time monitoring firmware, and robust communication interfaces to ensure seamless operation, fault detection, and adaptive power management within critical infrastructure environments. Built to exacting standards, the circuit board houses a microcontroller-based system that continuously analyzes input voltage, load conditions, and battery status, enabling instantaneous decision-making to maintain uninterrupted power delivery during grid disturbances, surges, or outages. Its architecture supports advanced features such as **automatic transfer switching (ATS), battery charging optimization, and predictive maintenance alerts**, all of which are critical for protecting sensitive equipment in data centers, telecommunications facilities, healthcare settings, and industrial applications where power reliability is non-negotiable.
The **02-790870-20** is engineered with **high-reliability components**, including low-drift analog sensors, ESD-protected digital I/O ports, and redundant power regulation circuits to withstand harsh environmental conditions, including temperature fluctuations, humidity, and electromagnetic interference. Its compact yet densely populated design incorporates surface-mount technology (SMT) and through-hole components, optimized for efficient thermal dissipation and extended operational lifespan. The board s firmware is programmed to adhere to strict industry protocols, such as **Modbus, SNMP, and proprietary Emerson communication stacks**, ensuring compatibility with enterprise-grade monitoring systems, SCADA platforms, and cloud-based power management solutions. Additionally, it features **self-diagnostic capabilities**, allowing for real-time fault isolation and automatic error logging to minimize downtime and facilitate rapid troubleshooting by field technicians.
For end-users and system integrators, the **Liebert/Emerson 02-790870-20** represents a critical upgrade path for existing UPS systems, offering enhanced scalability, energy efficiency, and smart grid connectivity. Whether deployed in a standalone UPS unit or integrated into a larger power distribution network, this circuit board ensures that the underlying control logic operates with **military-grade precision and redundancy**, mitigating risks associated with power instability. Its modular design further simplifies maintenance, as damaged boards can be swiftly replaced without compromising the integrity of the entire power protection system. By combining cutting-edge control technology with Emerson s legacy of industrial-grade reliability, the **02-790870-20** stands as an indispensable component for organizations demanding the highest standards of power resilience and operational continuity.
### **Pros and Cons of buying a Liebert/Emerson 02-790870-20 Control/Processor Circuit Board**
#### **Pros:**1. **Critical for System Functionality** This circuit board is essential for the proper operation of Liebert/Emerson UPS (Uninterruptible Power Supply) systems, particularly models like the **PX or PXM series**. Without it, the UPS may fail to regulate power, monitor battery status, or communicate with connected devices.
2. **OEM Part Availability** As an original equipment manufacturer (OEM) component, this board is designed to match the exact specifications of the UPS model it was originally installed in. This ensures compatibility and reduces the risk of performance issues.
3. **Warranty Coverage (If Applicable)** If the UPS was purchased new or under warranty, this part may still be covered under manufacturer or extended warranties, making it a cost-effective repair option.
4. **Long-Term Reliability** Liebert/Emerson (now part of Emerson Network Power) is a well-established brand with a reputation for durable power protection equipment. Replacing a faulty board with an OEM part helps maintain the system s reliability.
5. **Ease of Installation** Since it is an OEM part, installation instructions and compatibility details are readily available from Emerson s technical resources, reducing the risk of errors during replacement.
6. **Prevents Data Loss or Equipment Damage** A failing control board can lead to unexpected shutdowns, data corruption, or damage to connected equipment. Replacing it proactively mitigates these risks.
7. **Future-Proofing** If the UPS is still under active use, replacing the board ensures it remains functional for its intended lifespan, avoiding the need for a full system upgrade.
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#### **Cons:**1. **High Cost** OEM replacement parts from Emerson can be significantly more expensive than aftermarket or refurbished alternatives. The price may range from **$500 to $1,200 **, depending on availability and regional pricing.
2. **Potential Long Lead Times** Due to supply chain constraints or regional stock limitations, obtaining this part may take **weeks or even months**, especially if it is an older model. This downtime can be costly for businesses relying on uninterrupted power.
3. **Labor Costs for Replacement** If professional installation is required (recommended for critical systems), labor charges can add **$100 $300 ** to the total cost, depending on the technician s rates.
4. **Risk of Counterfeit Parts** If purchasing from third-party sellers (e.g., eBay, Amazon, or unverified distributors), there is a risk of receiving **counterfeit or refurbished parts** that may not function as intended. This can lead to further failures or void warranties.
5. **Complexity of Diagnosis** Determining whether the issue is indeed the control board (rather than a wiring, battery, or firmware problem) may require **technical expertise or diagnostic tools**. Misdiagnosis could lead to unnecessary replacement costs.
6. **Potential Firmware or Software Compatibility Issues** If the UPS has been updated with firmware or software changes, an older replacement board may not fully integrate, leading to partial functionality or error messages.
7. **Environmental and Handling Risks** Circuit boards are sensitive to **static electricity, moisture, and physical damage**. Improper handling during shipping or installation could render the part unusable.
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### **Conclusion**
The **Liebert/Emerson 02-790870-20 control/processor circuit board** is a **critical OEM part** that ensures the reliable operation of your UPS system. While it offers **long-term reliability and compatibility**, the **high cost, potential lead times, and risk of counterfeit parts** make it a significant investment. For businesses with **critical infrastructure**, the cost is justified to prevent downtime and data loss. However, for less critical applications, exploring **aftermarket or refurbished alternatives** (with caution) or **repairing the existing board** (if feasible) may be more economical.
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### **Recommendation**
1. **Verify the Diagnosis** Before purchasing, confirm that the issue is indeed the control board. Check for:- Error codes on the UPS display.
- Battery health (a failing battery can mimic control board issues).
- Physical damage to the board (burn marks, corrosion, loose connections).
2. **Purchase from Authorized Sources**
- **Emerson s official distributor** (e.g., Emerson Network Power (https://www.emerson.com/) or authorized resellers like **UPS Supply, CDW, or local Emerson partners**).
- Avoid unknown third-party sellers unless they provide **certification of authenticity**.
3. **Consider Aftermarket Options (With Caution)**
- Some reputable manufacturers (e.g., **APC, Eaton, or specialized UPS repair shops**) offer **compatible replacement boards** at a lower cost. However, ensure they are **tested and warranted** to avoid reliability issues.
- Example: **APC s compatible boards** for similar UPS models may be available through distributors like **Fry s Electronics or UPS Supply**.
4. **Evaluate Repair vs. Replacement**
- If the board is **minorly damaged** (e.g., a blown capacitor, loose solder), a **qualified technician** may be able to repair it for a fraction of the replacement cost.
- Contact **Emerson s technical support** or a **certified UPS repair service** for an assessment.
5. **Plan for Downtime**
- If the UPS is **mission-critical**, arrange for a **backup power source** (e.g., generator or portable UPS) during the replacement process.
- Schedule the replacement during **low-activity periods** to minimize disruption.
6. **Check Warranty Status**
- If the UPS was purchased new or under warranty, **contact Emerson s warranty department** they may cover the replacement at no cost or a reduced fee.
7. **Document the Process**
- Keep records of the **part number, purchase date, and installation details** for future reference or warranty claims.
### **Final Verdict:**- **For critical applications (data centers, hospitals, financial systems):** **Proceed with the OEM replacement** to ensure reliability.
- **For less critical applications (home offices, small businesses):** **Explore aftermarket options or repairs** to reduce costs, but **prioritize quality and authenticity**.
- **Always test the UPS thoroughly** after replacement to confirm proper functionality.
By carefully weighing these factors, you can make an informed decision that balances **cost, reliability, and risk**.
Details:
May show some signs of wear due to age and storage.
part #: 0279087020 prices
- $28.70-$115.00
specifications pcbemdev:
- brand: Liebert/emeron
- mpn: 02-790870-20
- part type: Circuit Board
payments pcbemdev:
- wallet: Apple-pay
- credit card: Discover
- other
returns pcbemdev:
- time: 30 Days
- method: Money back
- policy: Returns Accepted
- paid by: Seller
general pcbemdev:
- Electronic Components Semiconductors > Circuit Boards Prototyping > Printed Circuit Boards PCBs
- condition: Used
seller pcbemdev:
- city: Burlington, North Carolina
- # reviews: 21593
- rating: 99.9%
shipping pcbemdev:
- transit: 3-7 Days
- service: USPS Ground Advantage, USPS Priority Mail, UPS Ground, UPS Next Day Air
- cost: $0.00
- class: Standard, Expedited, One-day
- carrier: USPS, UPS
- type: Calculated
offer pcbemdev:
- options: Ship-to-home
- availability: In Stock
- best offers: True
- started: March 30, 2026
- quantity: 1
- sold: 0
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