AC Precharge Circuit Board Status Indicators

The

PowerFlex®

755T AC precharge module uses status indicators and a 7-segment display to report conditions.

Item	Description
A	DS1…DS5 status indicators.
B	7-segment display.

AC Precharge Circuit Board Status Indicators - DS1 (AC Precharge)

Color	State	Description
Green	Flashing	Fiber connection is online.
Red	Flashing	Fiber connection is offline.

AC Precharge Circuit Board Status Indicators - DS2 (240V AC)

Color	State	Description
Green	Steady	240V AC Okay
Yellow	Steady	240V AC Low Alarm
Red	Flashing	240V AC Loss Fault
Unlit	Off	240V AC Loss Alarm

AC Precharge Circuit Board Status Indicators - DS3 (Communications)

Color	State	Description
Green	Steady	Fiber connection is online.
Yellow	Flashing	Communications Loss
Unlit	Off	Inactive

AC Precharge Circuit Board Status Indicators - DS4 (AC Precharge)

Color	State	Description
Green	Steady	Precharge Done (Main circuit breaker is closed.)
Green	Flashing	Main circuit breaker is closing.
Yellow	Steady	Main circuit breaker is opening.
Yellow	Flashing	Not Ready
Red	Flashing	Main circuit breaker opened.
Unlit	Off	Ready

AC Precharge Circuit Board Status Indicators - DS5 (Firmware Status)

Color	State	Description
Green	Steady	No faults or alarms are present.
Green/Red	Flashing Alternately	Update in progress.
Yellow	Steady	Alarm is present.
Red	Flashing	Fault is present.

AC Precharge Circuit Board Status Indicators - 7-Segment Display

Color	State	Description
Red	Steady	Normal Operation At powerup, the display indicates the major firmware revision number, the minor revision number, and the build number for 1 second each. After powerup is complete, the display indicates the number that is assigned to the module by the main control board. (Shown: P0 = Precharge 0) Alarms When an alarm condition exists, the display indicates the alarm code. If there are multiple alarm codes, the display cycles through the codes and displays each code for 2 seconds.
Red	Flashing	Faults When a fault condition exists, the display indicates the fault code for Port 14. If there are multiple fault codes, the display cycles through the codes and displays each code for 2 seconds. If the device is faulted, the display only indicates fault codes. Alarm codes are omitted.

AC Precharge Location

AC Precharge 7-Segment Display Fault and Alarm Codes

Display Code	Display State	Condition Code	Condition Name
0	Flashing	14001	Image Watchdog Fault
0	Steady	14070	Board Over Temperature Alarm
1	Flashing	14002	Constants Message Invalid
1	Steady	14071	Board Over Temperature Fault
2	Flashing	14003	Constants Checksum
2	Steady	14072	Board Under Temperature Alarm
3	Steady	14073	Board Under Temperature Fault
4	Flashing	14004	Nonvolatile Data Checksum Fault
5	Flashing	14005	Power Supply Undervoltage
6	Flashing	14006	Precharge Fault
6	Steady	14108	240V AC Low
7	Flashing	14007	MCB Failed to Close or Wiring Bay Overtemp
7	Steady	14109	240V AC Loss
8	Flashing	14008	MCB Failed to Open
8	Steady	14110	Fused Disconnect Open (MCB open)
9	Flashing	14009	MCB Aux Mismatch or Wiring Bay Overtemp
9	Steady	14130	TVSS Open
10	Flashing	14120	PCC Failed to Close
11	Flashing	14121	PCC Failed to Open
12	Flashing	14122	PCC Aux Mismatch
12	Steady	14126	AC Line Over Voltage
13	Flashing	14123	MCB Trip Reset
14	Flashing	14124	MCB Overcurrent
15	Flashing	14010	240V AC Loss Fault
16	Flashing	14011	240V AC Over Voltage
17	Flashing	14012	Fused Disconnect Open (MCB closed)
32	Steady	14127	MCB Life Threshold Exceeded
33	Steady	14128	PCC Life Threshold Exceeded