- General Electric Computer Accessories User Manual

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• Chapter 2 Faults and Troubleshooting Innovation Series Medium Voltage GP Type - G Drives GEH-6385
Types of Faults
There are currently two types of fault conditions:
• Alarm faults indicate conditions that you should note, but that are not serious
enough to automatically shut down or trip the drive. If the condition goes away,
some alarm faults clear themselves and the display then identifies the alarm as
brief. Otherwise, you must stop the drive to clear this type of fault.
• Trip faults indicate a more serious condition that needs to be corrected.
Therefore, it trips the drive. The drive should not be restarted until the condition
is corrected.
You can clear most faults by selecting Clear Faults on the drive’s keypad or in the
(optional) toolbox program.
Fault Indication
The DSPX board is the
IS200DSPX Digital Signal
Processor, located in the
drive control rack.
The drive indicates a fault condition on the keypad, toolbox display, and on the
DSPX board.
On the keypad, a fault icon appears in the right side of the display: The operator can
then use the keypad to access the fault/alarm description (see Figure 5-1) and to clear
the fault.
ACTIVE FAULT
50 Trip HtSink temp low,
108 Brief DC bus voltage
12 Trip Gnd flt,
113 Trip Invalid board
--- RESET FAULTS NOW --
Fault No.
Fault Behavior
Abbreviated Description
Fault Icon:
Flashing = fault
Not flashing (on steady) = alarm
Figure 2-1. Sample Fault Display Screen on Keypad
The toolbox uses a Windows-based PC display. When a fault occurs, the word
Alarm or Trip appears in the lower right corner of the screen. You can view a
description and clear the fault using the toolbox functions. (GE publication GEH-
6401 describes these tools and this feature.)
The DSPX Fault LED displays at the front of the drive’s control rack. This red
indicator is on solid for a fault and flashes for an alarm.
A fault is identified by an assigned number and abbreviated description. Both of
these are displayed when an operator examines a fault using the keypad (see Figure
2-1) or the toolbox.
Table 2-1 lists the drive faults and their probable cause.