Allen-Bradley PowerFlex 700H Hardware Service Manual page 23

High performance/adjustable frequency ac drive
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Table 2.F Forward Biased Diode Tests on Output Power Modules for Power Structure
#2
Meter Leads
+
-
Nominal meter reading
DC-
2U/T1
DC-
2V/T2
DC-
2W/T3
Meter should display ".0L" (zero load)
(1)
2U/T1
DC+/R+
2V/T2
DC+/R+
2W/T3
DC+/R+
(1)
If the drive does not contain the brake chopper option, the DC+/R+
terminal will be labeled DC+.
Table 2.G Reverse Biased Diode Tests on Output Power Modules for Power Structure
#1
Meter Leads
+
-
Nominal meter reading
1U/T1
DC-
1V/T2
DC-
1W/T3
DC-
Meter should beep once and value
(1)
should gradually rise to about 0.5V
DC+/R+
1U/T1
DC+/R+
1V/T2
DC+/R+
1W/T3
(1)
If the drive does not contain the brake chopper option, the DC+/R+
terminal will be labeled DC+.
Table 2.H Reverse Biased Diode Tests on Output Power Modules for Power Structure
#2
Meter Leads
+
-
Nominal meter reading
2U/T1
DC-
2V/T2
DC-
2W/T3
DC-
Meter should beep once and value
(1)
should gradually rise to about 0.5V
DC+/R+
2U/T1
DC+/R+
2V/T2
DC+/R+
2W/T3
(1)
If the drive does not contain the brake chopper option, the DC+/R+
terminal will be labeled DC+.
If the drive fails any of these measurements, replace both Output Power
Modules for the appropriate Power Structure.
Component Test Procedures
2-7

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