Liebert 30-130kVA manual History LOG, 02 / 10, OUT-V IN-V Load Freq, Output, History Logs

Operation

History Logs

The History log contains pertinent data recorded just before and after an event that triggers a signifi- cant action such as an inverter failure.There are two History logs, each consisting of 64 frames. Each frame is a sequential snapshot of UPS-generated parameters. The UPS records these frames continu- ously at 4 millisecond intervals during normal operation. When a fault occurs, the UPS stores 40 frames prior to the triggering event, the frame of the triggering event, and 23 frames immediately fol- lowing the triggering event.

The frames are numbered -40 +23 with frame 0 designated as the triggering event that initiates the fault or alarm condition. The Operator can go back 40 frames from the triggering event and forward 23 frames.

There are nine possible triggering events:

•Rectifier fail

•Battery Low Transfer

•Output Overvoltage Transfer

•Output Undervoltage Transfer

•Inverter Fail

•Inverter Overload Transfer

•Heatsink Overtemp Limit

•Outlet Air Overtemp Limit

•Fault Load Transfer to Bypass

The data logged in each frame consists of metering data, machine status information, active faults/ alarms and fault/alarm conditions.

Figure 37 History log metering report screen

	HISTORY LOG 1			P1 - METERING 14 : 18: 49					02 / 10 / 00
	OUT-V	OUT	IN-V	IN		LOAD		DC	FREQ
	(L - N)	(I)	(L - L)	(I) ( KVA) ( KW)					(HZ)
A	120	10	208	52		74	59	540 V	60.0 OUTPUT
B	120	10	208	52		74	59	+ 65 A	60.0 INPUT
C	120	10	208	52		74	59	124 C
	PREV	NEXT					ALARMS	EXIT	FRAME 0
					STATUS

The default page is the METERING page, which provides the following data:

•3 phase Output Volts (L-N)

•3 phase Output I (amps)

•3 phase Input volts (L-L)

•3 phase Input I (amps)

•3 phase load kVA

•DC Bus Volts, DC I (charge + discharge -)

•Input Frequency and Output Frequency

•Battery Temperature

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