Rockwell Automation 1302 575v AC Drive - Canada Only User Manual
Page 86
9–8
Troubleshooting
Publication 1302-5.0 — January, 1998
Table 9.2 - Resistance Checks for Input Diodes
Input
Diode No.
Meter Connection
(+)ąąąąąą(ć)
Component is OK if
resistance (R) is:
Component is
defective if:
1
*
R/L1
50 < R < 10 Megohm
Continuity (short circuit) or
h
h
i
2
*
S/L2
g
y (
)
open when the meter is
t d ithd
3
*
T/L3
p
connected withreversed
polarity
4
R/L1
**
polarity.
5
S/L2
**
6
T/L3
**
*(+)DC bus volts power terminal
** (ć) DC bus volts power terminal
Table 9.3 - Resistance Checks for IGBTs
IGBT No.
Meter Connection
(+)ąąąąąą(ć)
Component is OK if
resistance (R) is:
Component is
defective if:
1
*
W/T3
50 < R < 10 Megohm
Continuity (short circuit) or
h
h
i
2
*
V/T2
g
y (
)
open when the meter is
t d ithd
3
*
U/T1
p
connected withreversed
polarity
4
W/T3
**
polarity.
5
V/T2
**
6
U/T1
**
*(+)DC bus volts power terminal
** (ć) DC bus volts power terminal