REPLACING THE BATTERY

To replace the battery:

 

1.

Turn off all connected loads, then turn off the UPS (batteries are NOT

Steps 2 and 3

 

hot-swappable).

 

 

2.

Use a Phillips head screwdriver to remove the two screws from the bottom

 

 

edge of the front panel.

Steps 4 and 5

3.

Slide the panel downward and remove it.

 

4.Gently pull the battery out of the UPS.

5.Remove the black wire from the negative (-) terminal and the red wire from

the positive (+) terminal.

6. Verify that the replacement battery matches the dimensions and battery type in the Specifications section below.

7.Connect the battery leads to the new battery. Be sure to reconnect the red wire to the positive (+) terminal and the black wire to the negative (-) terminal.

Note: Small sparks may occur at the battery connectors during reconnection.

8.Slide the battery into the UPS.

9.Close the front panel and replace the two screws from Step 2.

Dispose of the old battery properly at an appropriate recycling facility.

TROUBLESHOOTING

If the UPS malfunctions during operation, check the following chart for proper adjustment. For further assistance, please contact your local Emerson Network Power representative.

Problem

Possible Causes

Solutions

 

 

 

 

The UPS may not be turned on.

• Press the On/Off button to turn on the UPS.

Utility power is normal, but LED 1 is not illuminated.

The power cord may not be connected properly.

• Connect the power cord securely into a wall outlet.

 

The upstream input circuit breaker may be tripped.

• Reset the input circuit breaker.

 

 

 

LED 1 flashes (green) every 3 seconds, but there is

Battery voltage may be too low.

• Recharge the UPS for 8 hours.

no output power.

 

 

 

 

 

Alarm buzzer beeps continuously although utility

The UPS may be overloaded (check LED 2).

• Disconnect some equipment from the UPS.

power is normal.

 

 

 

 

 

UPS does not provide expected backup time.

The UPS battery reached end of life.

• Replace the internal battery.

 

 

 

The UPS is on and connected to input power, but fails

Utility power may be outside the unit’s operating range.

• If utility power is normal, try reconnecting input

to operate properly.

power and restarting the UPS.

 

 

 

 

SPECIFICATIONS

Model Number

PSA500MT3-120U

 

PSA650MT3-120U

 

 

 

 

Capacity (VA/W)

500/300

 

650/390

 

 

 

 

Net Weight, lb. (kg)

14.1 (6.4)

 

14.6 (6.6)

 

 

 

 

Shipping Weight, lb. (kg)

15.9 (7.2)

 

16.3 (7.4)

 

 

 

Dimensions - W x D x H, in. (mm)

3.7 x 14 x 6.7 (95 x 356 x 171)

 

 

 

On-Line Input Voltage

 

84-140VAC

 

 

On-Line Frequency

50/60Hz ±5Hz

 

 

Output Voltage (Utility Power Normal)

Typical 97-129VAC

 

 

 

Output Voltage (Battery Operation)

 

120VAC ±5%

 

 

On-Battery Wave Form

Stepped sinewave

 

 

 

Battery Type - VDC x Ah x Quantity

 

12V x 7Ah x 1

 

 

Typical Recharge Time

6-8 hours to 90%

 

 

 

Battery Run Time* - Full Load

 

3-5 minutes

 

 

 

Battery Run Time* - Half Load

 

10 minutes

 

 

Audible and Visual

Audible alarm / LED

 

 

Backup Outlets

NEMA 5-15R (3)

 

 

Surge Outlets

NEMA 5-15R (1)

 

 

Operating Temperature, °F (°C)

32 to 104 (0 to 40)

 

 

Storage Temperature, °F (°C)

5 to 104 (-15 to 40)

 

 

Operating / Storage Relative Humidity

0%-90%, non-condensing

 

 

EMI Classification

FCC Part 15 Class B

 

 

 

 

Agency

 

 

 

 

 

 

Safety

UL 1778, c-UL Listed

 

 

Transportation

ISTA Procedure 1A Certification

 

 

 

 

* Battery run time may vary depending on load

 

 

 

© 2008 Liebert Corporation

All rights reserved throughout the world. Specifications subject to change without notice.

® Liebert is a registered trademark of Liebert Corporation.

All names referred to are trademarks or registered trademarks of their respective owners.

SL-23300_REV0_04-08

Technical Support / Service

United States

800-222-5877 (Outside U.S. 614-841-6755)

1050 Dearborn Drive

upstech@emersonnetworkpower.com

P.O. Box 29186

Web site: www.liebert.com

Columbus, OH 43229

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Emerson 650VA, 500VA quick start Replacing the Battery, Troubleshooting, Specifications

650VA, 500VA specifications

The Emerson 500VA and 350VA uninterruptible power supplies (UPS) designed for 120V applications are engineered to ensure reliability and protection for critical electronic devices. These compact and robust UPS systems are particularly suitable for home offices, small businesses, and other environments where maintaining power continuity is essential.

One of the standout features of the Emerson UPS models is their ability to provide line-interactive technology. This technology enhances voltage regulation by adjusting the output voltage without switching to battery. This leads to improved efficiency and extended battery life, making these units an excellent choice for environments with frequent voltage fluctuations.

Both the 500VA and 350VA units come equipped with multiple outlets, allowing users to connect several devices simultaneously. The inclusion of surge protection further safeguards connected equipment from harmful electrical spikes, a common risk in everyday power supply cases. This comprehensive protection ensures that devices such as computers, routers, and telecommunication equipment remain operational during unexpected power outages.

Another important characteristic of the Emerson UPS systems is their LCD display, which provides real-time information on battery status, load levels, and estimated runtimes. This feature allows users to monitor the UPS performance easily and take proactive measures when power conditions change.

The Emerson UPS systems also incorporate advanced battery management technology that optimizes charging cycles and prolongs battery lifespan. This capability minimizes the need for frequent replacements and enhances the overall reliability of the power supply.

With a compact design, the Emerson 500VA and 350VA models can be easily integrated into any workspace without occupying a large footprint. The lightweight construction allows for easy installation and portability, making it suitable for users who might need to relocate their equipment frequently.

In summary, the Emerson 500VA and 350VA UPS systems for 120V applications provide a powerful solution for uninterrupted power supply. With features such as line-interactive technology, multiple outlets with surge protection, an LCD display for monitoring, and advanced battery management, these UPS units offer both reliability and efficiency. Whether protecting critical data or ensuring workflow continuity, the Emerson UPS systems are a valuable addition to any power-sensitive environment.