Operating instructions

Operating Instructions 19
frame when the fault occurred, and the next 23 frames. The 64 frames of History Status can be a
very useful diagnostic tool. As such, it is recommended that the History Status buffer not be reset
until the designated fault condition that caused the buffer to be latched is viewed and investi-
gated by a qualified service technician. After the alarm condition has been corrected, the History
Status buffer can be reset (unfrozen) by pressing and holding the Alarm Reset switch for at least
5seconds.
Figure 17 History Status Screen
System Status
The System Status screen displays the total unit operating hours and the total number of switch
transfers, which are stored in nonvolatile memory. The total operating hours can not be reset by
the user.
The total number of switch transfers is also displayed on the Monitor/Mimic screen. The number
of switch transfers displayed can be reset by the user from the Setpoints screen.
Figure 18 System Status Screen
HISTORY STATUS 05/20/95 09:17:52 FRAME 41
ORDER - 000000 SITE ID - 00000 SITE TAG - 0000000
**** ACTIVE ALARMS **** Transfer Inhibit Peak-I1 OVLD
A
KVA
B KWC
HERTZ
EXIT
SELECT :
SOURCE 1 AMPS 1021 1138 1089
65
SOURCE 1 VOLTS 387 398 392
96
60.0
60.0
SOURCE 2 VOLTS 480 480 480
SOURCE 2 AMPS 0 0 0
Source1 UV
Source1 Fail
PREVIOUS FRAME
DOWN :
NEXT FRAME
UP :
LOAD
EXIT
SYSTEM STATUS
000168
0078
Total Operating Hours
Total Transfers
EXITSELECT :