Hardware Ref, Installation, and Troubleshooting User guide

9Ć7
T
able 9.1 Ć Resistance Checks (Continued)
60Ć100HP Drives
Input
Diode
No.
Meter
Connection
(+) (-)
Component is OK if
resistance (R) is:
Component is defective if:
1 47 1L1
0.3 kohm <R< 8 kohm Continuity (short circuit) or open when the meter is
dih d li
2 47 1L2
y( ) p
connected with reversed polarity
3 47 1L3
4 1L1 45
5 1L2 45
6 1L3 45
100Ć150HP Drives
Input
Diode
No.
Meter
Connection
(+) (-)
Component is OK if
resistance (R) is:
Component is defective if:
1 47 1L1
R> 100 kohm Continuity (short circuit)
2 47 1L2
y( )
3 47 1L3
4 1L1 45
5 1L2 45
6 1L3 45
1Ć60HP Drives
IGBT
No.
Meter
Connection
(+) (-)
Component is OK if
resistance (R) is:
Component is defective if:
1 ă* W/T3
50 <R< 10 Megohm Continuity (short circuit) or open when the meter is
dih d li
2 ă* V/T2
g
y( ) p
connected with reversed polarity
3 ă* U/T1
4 W/T3 **
5 V/T2 **
6 U/T1 **
* (+) D ĆC Bus V olts power terminal
** (-) D ĆC Bus V olts power terminal
60Ć150HP Drives
IGBT
No.
Meter
Connection
(+) (-)
Component is OK if
resistance (R) is:
Component is defective if:
1 47 W
0.3 kohm <R< 8 kohm Continuity (short circuit) or open when the meter is
dih d li
2 47 V
y( ) p
connected with reversed polarity
3 47 U
4 W45
5 V45
6 U45