User`s manual
30
Defender 3 Online Emergency Lighting Inverter User’s Manual
#018-7150-03 Rev NR
History Log Key
Code Message Description
00 00 Blank - Used for clearing Alarm History
01 alarm clr Alarm History has been cleared
02 Phase SEQ Input phase sequence has caused a fault and must be changed
04 Input OV Input voltage has gone over fault limit
05 Input UV Input voltage has gone below fault limit
07 Input CONT System has failed to detect closure of the Input Contactor
08 Output Hi V Output voltage has gone over fault limit
09 Output Lo V Output voltage has gone below fault limit
10 Output O Frq Output frequency has gone over fault limit
11 Output U Frq Output frequency has gone below fault limit
12 Phase FLT Input phase sequence fault has not been corrected and system has timed out
13 Invrtr FLT
A hardware fault has been detected by the inverter control board (IGBT PCBA); caused
by IGBT failure, unexpected power on reset, or DC Bus over voltage
14 DC Bus OV DC Bus has gone over fault limit
15 DC Bus UV DC Bus has gone below fault limit
16 Input O Frq Input frequency has gone over fault limit
17 Input U Frq Input frequency has gone below fault limit
18 RECT off Rectifier has shut off unexpectedly
20 Invrt O Frq Inverter frequency has gone over fault limit
21 Invrt U Frq Inverter frequency has gone below fault limit
22 ISBS open Inverter Static Bypass Switch has not engaged and system has timed out
23 USBS fault Utility Static Bypass Switch has failed test
24 USBS short
Utility Static Bypass Switch failure, output voltage still detected after off command was
issued
7.3. HISTORY LOG KEY
The History Log is used to record certain events that reflect the status and operating mode of the unit. The
unit has the capability of logging up to 64 lines/events (00 through 63). After 00 is displayed, the system will
cycle around to 63. After 64 events are logged, the system will start recording again at 00. The Log is read
by pressing or holding down the Alarm Scan button. The most recent event being displayed first. Each time
the button is pressed one log event is read in sequential order.
The following table is a list of possible faults
that can be displayed on the LCD Display.
Table 2