APC DP300E manual System is locked in oper UPS has attempted 10 times

Alarms

NOTE:

Utility = Mains

Possible alarm		Description	Action
39.	System is locked in oper.	UPS has attempted 10 times	If the system is locked in
	mode	within 1 min. to switch from	bypass operation and the
			alarm “Inverter voltage
		bypass to battery operation
			error” exists in the alarm
		or “High DC warning” has
			stack do not try to unlock
		appeared 10-20 times within	the operations mode lock
		1 min.	but - call for assistance!
40	RAM1 memory write error	Fault in UPS	Call for assistance
41.	Memory write error	Fault in UPS	Call for assistance
42.	Communication to VQ	Fault in UPS	Call for assistance
	bypass lost
43.	Communication to VQ	Fault in UPS	Call for assistance
	output lost
44.	Communication to DMU	Fault in UPS	Call for assistance
	lost
45.	Communication to control-	Fault in UPS. Display will	Call for assistance
	ler lost	show invalid data for UPS
46.	Communication to parallel	Fault in UPS	Call for assistance
	IF lost
47.	External shutdown	Remote signal for switching	–
	accepted	off the UPS accepted – UPS
		switches off itself
48.	DC capacitor charge error	Fault in DC charge circuit	Do NOT close
			external MCCB due to
			preventing damage of
			UPS system.
			Call for assistance
49.	Communication to VQ	Fault in UPS	Call for assistance
	mains lost
50.	Bypass sync error	The UPS cannot synchronize	Check if phase rota-
		to the bypass utility	tion of bypass voltage
			is correct - if OK, call
			for assistance

7OA0002 US rev. 04

User Guide Silcon DP300E Series 480V 240-320kVA 29