Minuteman UPS CPE 1000, CPE 2000 Inverter not Functioning, Chapter Five Maintenance Guide

Page 10

4.4. Inverter not Functioning

4.4.1. Output Short-Circuit operating in the On-Line Mode

If the output load becomes short-circuited while operating in the On-Line mode, the UPS will shutdown to prevent damaging the UPS and the remaining connected equipment. The Fault LED illuminates and the alarm sounds continuously. The UPS will not turn on automatically after the short-circuit condition has been removed. The UPS must be manually restarted. To restart the UPS after the short-circuit condition has been removed; press the Main Switch on the front panel to the "OFF" position first, then to the "ON" position.

O/P

OUTPUT

--- 4-4 ---

4.4.2. Output Short-Circuit operating in the Bypass Mode

If the output load becomes short-circuited while operating in the Bypass mode, the AC fuse will open to prevent damaging the UPS and the connected equipment. Remove the short-circuited equipment and replace the AC fuse with same ratings.

4.5. Inverter Over-Temperature

If the UPS experiences an over-temperature when the Utility is normal, the UPS will switch to the Bypass Mode. The UPS will switch back to the On- Line mode once the over-temperature condition has been eliminated. If the over-temperature condition happens when the Utility is abnormal, the alarm will beep continuously, the Fault LED will illuminate and the output of the UPS will turn off.

4.6.Inverter Over-Current and Output Voltage Out of Tolerance

If the UPS’s inverter experiences an over-current or an out-of-tolerance output voltage, when Utility is normal; the UPS will switch to the Bypass mode and the Utility LED, Bypass LED and Fault LED will illuminate. If the over-current or the out-of-tolerance output voltage condition happens when the Utility is abnormal, the Fault LED will illuminate and the output of the UPS will turn off.

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Chapter Five: Maintenance Guide

5.1. System Block

PFC

INVERTER

AC/DC

DC/AC

Control

BOOSTCircuit

DC/DC

CHARGER

 

 

 

BATTERY

 

5.2 Troubleshooting

If the UPS malfunctions, check the list below to resolve the problem. Should the problem persist, call for service.

Situation

 

 

 

 

Check Items

 

 

Solution

 

 

Utility LED is not on and the

AC

Input cord

is loose

1.Connect

the

Input

UPS

is

on battery

mode,

or

AC

Input

fuse

is

power cord to the wall

when Utility is normal.

 

 

open.

 

 

 

outlet.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.Replace

the

AC

 

 

 

 

 

 

 

 

 

 

 

input fuse.

 

 

 

 

 

 

 

 

 

 

 

 

 

3.If

the

problem

 

 

 

 

 

 

 

 

 

 

 

persist call for service.

The UPS switches to the

1.Check if any power

1.Do not use power

Battery mode then back to

strip

is connected

to

strips.

 

 

the On-Line mode, when

the UPS.

 

 

2.Replace

the

wall

the

connected

device

is

2.Check the wall outlet.

outlet.

 

 

turned on. Or, the UPS

 

 

 

 

 

 

 

 

 

switches

back

and

forth

 

 

 

 

 

 

 

 

 

between

the Battery

mode

 

 

 

 

 

 

 

 

 

and the On-Line mode.

 

 

 

 

 

 

 

 

 

 

The

Overload

LED

is

 

 

 

 

 

The

UPS

is

illuminated.

 

 

 

 

 

 

 

 

overloaded.

Remove

 

 

 

 

 

 

 

 

 

 

 

some of the load.

 

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Page 9 Page 11
Contents CPE ON-LINE Series Table of Contents Important Safety Instructions An Important NoticeChapter One Introduction Para Systems Life Support PolicyReceiving Inspection Chapter Two Introduction to the Front and Rear Panel General CharacteristicsAdvanced Technical Characteristics Front Panel Display ExplanationRear Panel Explanation General Explanation DIPChapter Three Installation and Operation Storage Instruction Connecting the BatteriesConnecting the Equipment Option SlotChapter Four The Working Principle of the UPS When Utility is NormalWhen Utility is Abnormal Overload ConditionChapter Five Maintenance Guide Inverter not FunctioningQualified Service Personnel only MaintenanceReplacing the Batteries Battery Replacement Procedure CPECPE Software Installation Rups II Installation Chapter Six Power Monitoring Software Installation GuideHardware Installation UPSilon 2000 InstallationSpecifications AppendixObtaining Service Limited Product Warranty Declaration of Conformity

CPE 2000, CPE 1000, CPE 3000 specifications

Minuteman UPS offers a range of uninterruptible power supply (UPS) solutions designed to protect sensitive electronic equipment from power disturbances. Among this line-up, the CPE 3000, CPE 2000, and CPE 1000 models stand out for their reliability, performance, and advanced technologies, making them ideal for various applications in both commercial and residential settings.

The Minuteman CPE 3000 is a high-capacity UPS that delivers robust power protection for critical devices. With a capacity of 3000 VA, it features line-interactive technology, which allows it to maintain output voltage under varying input conditions. The CPE 3000 is equipped with an LCD display that provides real-time monitoring of power status, battery condition, and load levels, helping users stay informed about their system’s health. Additional features include multiple outlets for connecting various devices, advanced protection against surges and spikes, and a built-in automatic voltage regulation (AVR) to ensure stable power delivery.

Next, the CPE 2000 offers a balance of performance and efficiency. With a 2000 VA capacity, this model is designed for small to medium-sized networks and critical equipment. Like its predecessor, the CPE 2000 employs line-interactive technology and AVR capabilities to enhance voltage stability. Its compact design makes it suitable for limited spaces without sacrificing performance. The unit also includes a USB communication port for easy integration with network management systems and has a battery hot-swappable feature for quick replacements without interrupting operation.

The CPE 1000, the entry-level model in this series, provides essential power protection for smaller devices and systems. With a capacity of 1000 VA, it is a highly efficient UPS ideal for home offices or small workstations. It features a compact and lightweight design, making it easy to deploy in various environments. This model is also equipped with surge protection and an audible alarm to notify users of battery issues or overload conditions, ensuring a reliable backup system for essential equipment.

All three models within the Minuteman CPE series share key characteristics, such as a user-friendly interface, energy-efficient operation, and compliance with safety standards, which ensure they deliver reliable power protection. Additionally, these UPS systems are supported by a solid warranty and customer support, making them a trusted choice for safeguarding electronic devices from unexpected power loss and fluctuations.
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