Allen-Bradley PowerFlex 700H Service Manual page 24

2-6 Component Test Procedures
Table 2.B Reverse Biased Diode Tests on Rectifying Module(s)
Meter Leads
+ - Nominal meter reading
L1 DC-
L2 DC-
L3 DC-
Meter should display ".0L" (zero load)
DC+ L1
DC+ L2
DC+ L3
If the drive fails any of these measurements, replace all Rectifying modules.
4. Conduct forward and reverse biased diode tests on the Output Power
modules.
Table 2.C Forward Biased Diode Tests on Output Power Modules
Meter Leads
+ - Nominal meter reading
DC- T1
DC- T2
DC- T3
Meter should display ".0L" (zero load)
T1 DC+
T2 DC+
T3 DC+
Table 2.D Reverse Biased Diode Tests on Output Power Modules
Meter Leads
+ - Nominal meter reading
T1 DC-
T2 DC-
T3 DC-
Value should gradually rise to about
0.5V
DC+ T1
DC+ T2
DC+ T3
If the drive fails any of these measurements, replace all three Output
Power modules.