Eaton 91PS User And Installation Manual

Also see for 91PS: Safety and installation quick guide Safety and installation quick guide User and installation guide User and installation guide

Contents

The UPS system transfers to the double conversion mode. If there is notenough UPM capacity available, the system remains in the bypass modeand an alarm sounds.The UPS is now operating in the double conversion mode. The green statusindicator LED for normal operation is lit.7.3.5 Transferring from the double conversion mode to the EnergySaver System modeNote: Note that the Energy Saver System mode commands are displayedonly if enabled at the factory or by an authorized Eaton Field ServiceEngineer .To transfer the critical load to the Energy Saver System mode:1. In the home screen, press Controls.2. Select EAA controls.3. Select Enable ESS.The entire UPS system transfers to the Energy Saver System mode andthe critical load is supplied by the bypass source. If the bypass source isnot available or the conditions are not correct for the ESS mode, the powermodule remains on. The green status indicator for normal operation isilluminated. The UPS status is shown as UNIT ONLINE, ESS. In SystemLog, the UPM status is shown as ESS Mode On.7.3.6 Transferring from the Energy Saver System mode to thedouble conversion modeNote: Note that the Energy Saver System mode commands are displayedonly if enabled at the factory or by an authorized Eaton Field ServiceEngineer.To transfer the critical load to the double conversion mode:1. In the home screen, press Controls.2. Select EAA controls.3. Select Disable ESS.The UPS system transfers to the battery mode and then to the doubleconversion mode. If the power module is not available, the system remainsin the bypass mode and an alarm sounds. The green status indicator fornormal operation is illuminated. The UPS status is shown as UNITONLINE. The UPM status is shown as ACTIVE.Eaton 91PS/93PS UPS 8-10 kW User's and installation guide© Eaton Corporation plc 2018. All rights reserved. Revision: 003 Document ID: P-164000672 78 (102)