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Rockwell Automation Publication 20Y-TG001C-EN-P - April 2017
Chapter 3
Component Test Procedures
2. Remove the protective barriers.
Remove AFE Protective Barriers on page 44
.
3. Disconnect any drives that are connected to the DC bus from the DC
bus, or remove the DC bus fuses from the AFE.
4. Conduct forward and reverse biased diode tests on the power structure.
Figure 8 - Measurement Points for Forward and Reverse Diode Tests
Table 2 - Forward Biased Diode Tests on Power Structure
Meter Leads
Nominal Meter Reading
+
-
DC-
U/T1
Value gradually rises to about 0.5V
(1)
(1) The actual voltage reading can vary depending upon your equipment. If your readings are
not near 0.5V, verify that the actual voltage that is measured is consistent for the power
structure.
DC-
V/T2
DC-
W/T3
U/T1
DC+
V/T2
DC+
W/T3
DC+
PE
B+ (DC+)
U/T1
V/T2
W/T3
B– (DC–)
