Table 8-2. Panel Leds And Fault Messages - Advanced Energy MDX II User Manual

Table 8-2. Panel LEDs and Fault Messages

Problem Indicators
Passive Control Panel Fault
Panel LED On
n/a "A/D Conversion Fail-
ure"
ARC n/a
n/a "Bus Fault"
Note: Each inverter has a bus bar—one bus bar is in a 15k unit and two bus bars are in a 30k
unit. Only the RIGHT (bus 1) LEDs light if you have a 15k unit
BUS HIGH "Bus 1 High"
RIGHT
BUS HIGH "Bus 2 High"
LEFT
5700262-R
Message
Hardware logic
board failure
Lights momentarily
if an arc occurs (see
"Arc Counting
Features and Limits"
on page 5-5)
A short-duration bus
fault occurred and
the MDXII unit
couldn't determine if
it was bus 1 or bus 2.
Internal MDXII bus
1 voltage input line is
too high.
Internal MDXII bus
2 voltage input line
(30k unit only) is too
high.
Troubleshooting and Customer Support
Explanation Suggested Action
Cycle power to the unit.
If the fault message
persists, call AE
Customer Support.
n/a
Press the STOP switch to
clear the fault message.
Cycle power to the unit.
Press the STOP switch to
clear the fault message.
Inspect your input power
source to ensure that it is
connected correctly and
ensure that the bus 1 line
voltage is correct (see
Table on page 3-2).
Press the STOP switch to
clear the fault message.
Inspect your input power
source to ensure that it is
connected correctly and
ensure that the bus 2 line
voltage is correct (see
Table on page 3-2).
MDXII Power Supplies
8-5