Rockwell Automation Liqui-Flo V2.0 AC Drive - Manual (Page 230)

230 Rockwell Automation Publication D2-3518-3 - May 2013
Chapter 10
4. Disconnect the motor from the drive.
5. Check all AC line and DC bus fuses.
6. If a fuse is open, use a multimeter to check the input diodes and output
IGBTs. See
Table 35 and Table 36 .
7. Reconnect the motor to the drive.
8. Reapply input power.
Table 35 - Input Diode Components
* (+) DC Bus Volts power terminal
** (-) DC Bus Volts power terminal
Table 36 - Output IGBT Components
* (+) DC Bus Volts power terminal
** (-) DC Bus Volts power terminal
Input Diode
No.
Meter Connection Component is OK if
resistance (R) is:
Component is defective if:
(+) (–)
1 * L1 10 < R < 1 megohm Continuity (short circuit) or open
when the meter is connected
with reversed polarity.
2 * L2
3 * L3
4 * L4
5 * L5
6 * L6
7 L1 **
8 L2 **
9 L3 **
10 L4 **
11 L5 **
12 L6 **
Output IBGT
No.
Meter Connection Component is OK if
resistance (R) is:
Component is defective if:
(+) (–)
1 * W/T3 10 < R < 1 megohm Continuity (short circuit) or open
when the meter is connected
with reversed polarity.
2 * V/T2
3 * U/T1
4 W/T3 **
5 V/T2 **
6 U/T1 **