CyberPower PR1000RT2UC User Manual - Page 23

TROUBLESHOOTING (continued) Problem UPS cannot work properly while attached to a generator. Possible Cause The size of generator is not suitable for current load. The UPS is too sensitive to power events. Solution The continuous generator capacity rating must be at least twice the total load, including the UPS and all other devices attached to the generator; otherwise, the generator may not be able to hold the voltage and frequency within the input tolerance of the UPS, causing the UPS switching from utility to battery mode back and forth. Reduce the connected load or upgrade the generator. The quality and stability of the generator power may not be as good as your local utility. The frequent blackouts and waveform distortions could lead the UPS to consider the input power inappropriate and will switch to battery mode to provide clean power to attached load, draining the battery. Refer to LCD OPERATION GUIDE section to desensitize the UPS via LCD module, PowerPanel Business software or RMCARD interface (if installed). Note: Lowering the sensitivity setting makes the UPS tolerate more power events, but it also increases the transfer time of the UPS. Some sensitive equipment cannot accept extended transfer time. Test to check if there is a load drop when the UPS is switching to battery mode. Additional troubleshooting information can be found at www.cyberpowersystems.com. 22