Rockwell Automation GV3000/SE AC Drive Ver. 6.06 Hdwe Ref., Installation, and Troubleshooting Manual User Manual
Page 95
![background image](/manuals/580940/95/background.png)
Troubleshooting the Drive
9-11
Table 9.1 - Resistance Checks (Continued)
200–400 HP Drives (with the motor connected)
IGBT
No.
Meter
Connection
(+) (-)
Component is OK if
resistance (R) is:
Component is defective if:
All
IGBTs
tested in
parallel
U/T3 *
10 < R < 1 Megohm
Continuity (short circuit) or
open when the meter is
connected with reversed
polarity
* U/T3
U/T3 **
* U/T3
* (+) DC Bus power terminal
** (-) DC Bus power terminal
200–400 HP Drives (with the motor disconnected)
IGBT
No.
Meter
Connection
(+) (-)
Component is OK if
resistance (R) is:
Component is defective if:
1
* W/T1
10 < R < 1 Megohm
Continuity (short circuit) or
open when the meter is
connected with reversed
polarity
2
* V/T2
3
* U/T3
4
W/T1 **
5
V/T2 **
6
U/T3 **
* (+) DC Bus power terminal
** (-) DC Bus power terminal