Why is my HP R1500 - XR UPS beeping every 2 seconds when on battery?
- Hholly61Sep 12, 2025
If your HP UPS is beeping every two seconds while on battery, it means the input voltage is out of range. The suggested solution is 'On—2 second beep'.
 

Why is my HP R1500 - XR UPS beeping every 2 seconds when on battery?
If your HP UPS is beeping every two seconds while on battery, it means the input voltage is out of range. The suggested solution is 'On—2 second beep'.
What does it mean when my HP R1500 - XR UPS beeps every 2 seconds when the power goes out?
If your HP UPS is beeping every two seconds, it indicates a low battery condition when there is no utility power. The suggested solution is 'On—2 second beep'.
Why is my HP UPS beeping 3 times every 10 seconds?
If your HP UPS is beeping three times every ten seconds, it indicates a low battery condition when attempting to power up from a DC start without utility power. The suggested solution is 'On—3 beeps/10 seconds'.
| Topology | Line Interactive | 
|---|---|
| Input Connection | IEC 320 C14 | 
| Battery Type | Sealed Lead Acid (SLA) | 
| Form Factor | Rackmount | 
| Nominal Output Voltage | 230V | 
| Nominal Input Voltage | 230V | 
| Input Frequency | 50/60 Hz | 
| Typical Backup Time at Full Load | 5 minutes | 
| Transfer Time | 4-8 ms | 
| Hold-up Time | 10 ms | 
| Input Voltage Range | 160 - 286 VAC | 
| Interface Port | USB | 
| Battery Recharge Time | 3 hours | 
| Communication Ports | USB | 
| Waveform | Sine wave | 
Provides an overview of the HP 3 Phase UPS and its key benefits.
Details the components located on the front panel of the UPS unit.
Describes the front panel buttons, LEDs, and their functions.
Identifies and describes the ports and connectors on the rear of the UPS.
Explains the Remote Emergency Power Off (REPO) port and its operation.
Lists essential safety precautions before installing the UPS.
Provides factors for selecting an installation site and preparing equipment.
Step-by-step instructions for installing the rack mounting rails for the UPS.
Detailed steps for physically installing the UPS into a rack.
Guidance on setting up the UPS system in a parallel configuration.
Essential safety precautions for installing the Extended Runtime Module (ERM).
Factors for selecting an installation site and preparing the ERM.
Steps for installing the mounting rails for the ERM.
Comprehensive guide for physically installing the ERM.
Describes the different operating modes of the UPS system.
Instructions for changing language, display, and user settings.
Guidance on setting the alarm level for low battery conditions.
Information on performing automatic and manual battery tests.
Steps to safely power down a single UPS unit.
Procedure for safely powering down a UPS system in parallel.
Guide for installing communication cards and control terminals.
Details on available serial communication capabilities and pin assignments.
Explanation of control terminal inputs, outputs, and relay contacts.
Information on how UPS units communicate in a parallel system.
How UPS units automatically assign identities in a parallel system.
Overview of the software for managing UPS power protection.
Steps for replacing the UPS's main electronics module.
Procedure for replacing expansion cards in the UPS X-Slot.
Detailed instructions for replacing the UPS battery modules.
Step-by-step instructions for replacing UPS batteries.
Procedure for testing the UPS after battery replacement.
Instructions for removing and replacing the entire UPS unit.
Steps for removing and replacing the Extended Runtime Module (ERM).
Guide for updating the UPS firmware to the latest version.
Diagnosing issues based on UPS alarms and indicator lights.
Resolving problems with abnormal output voltage during startup.
Troubleshooting when the UPS bypass function is not available.
Diagnosing why there is no power at the UPS output receptacles.
Addressing overload and overtemperature conditions in the UPS.
Resolving problems related to UPS not powering up or backup time.
Lists available models and details physical dimensions and weight.
Electrical input requirements for the UPS.
Electrical output capabilities of the UPS.
Details operating environment, battery configuration, and runtimes.
List of available spare parts with part numbers for ordering.
Provides phone numbers and websites for HP technical support.
Details on the limited warranty and protection guarantees.
Information on the warranty for UPS batteries before failure.
Precautions to prevent damage from static electricity when handling parts.
Methods for proper grounding to protect against static discharge.
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