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38 Chapter 4 Operator Control And Display Panel
HIPULSE U UPS Single Module And “1+N” (Expandable) 160/200/300/400kVA User Manual
Alarm message Description
Byp. feedback fault
UPS feeds output voltage back to the mains grill through bypass due to shortcircuit of static switch
on bypass side during mains failure. In this case, lack of protective bypass switch or improper
connection of switch auxiliary contact will endanger the user safety. Special attention should be paid
to this
INV drive circuit fault Improper connection of inverter drive cable, or equipment type setting error
Bypass disconnect
closed
Bypass switch closed
Bypass disconnect open Bypass switch open
Maint. disconnect closed Maintenance bypass switch closed
Maint. disconnect open Maintenance bypass switch open
Output disconnect closed Output switch closed
Output disconnect open Output switch open
Check UPS output The UPS is off and has no output
Output disabled
If the UPS auto-recovery after EOD function is disabled, after UPS shutdown due to battery
discharge to EOD (end-of-discharge) voltage, when the mains power is restored, the UPS will not
restart automatically, and the LCD will display this alarm message
Normal mode The UPS is in Normal mode
Battery mode The UPS is in Battery mode
Source share mode The UPS is in Source Share mode
Bypass mode The UPS is in Bypass mode