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Rockwell Automation Publication 20P-TG004C-EN-P - September 2021
31
Component Test Procedures
Chapter 2
Table 3 - SCR Anode to Cathode Junction Measurements for Non-Regenerative Drives
Figure 8 - Non-Regenerative Drive SCR Module Layout
For SCR…
Measure from
Terminal…
To Terminal… Nominal meter reading:
1
U
C
“open circuit” or “megaohms” range
4
U
D
2
V
C
5
V
D
3
W
C
6
W
D
SCR 1 - G
SCR 1 - K
SCR 4 - G
SCR 4 - K
SCR 5 - G
SCR 5 - K
SCR 6 - G
SCR 6 - K
Front Gate Lead
Terminal Block
Phase U
Rear Gate Lead
Terminal Block
Phase U
Rear Gate Lead
Terminal Block
Phase V
Rear Gate Lead
Terminal Block
Phase W
SCR 1 - G
SCR 1 - K
Front Gate Lead
Terminal Block
Phase V
SCR 1 - G
SCR 1 - K
Front Gate Lead
Terminal Block
Phase W