Yaskawa Portable Control Display Unit - Manual (Page 57)

6 TEST MENU
51 Diagnostics
01/22/96
• Press the ESC key. The display
changes to:
• Turn the power off and replace the
blown fuse(s) before continuing.
◊
The PCDU displays the following if
it detects one or more shorted SCRs:
The “1”, “2”, “3”, “4”, “5”, and “6”
designators annunciate which of the
SCR/doubler packs is shorted. The
following table links the number displayed
with the actual failed SCR or doubler pack.
Refer to the Schematic Diagram for the
location of the component.
NUMBER SHORTED
ON PCDU SCR/DOUBLER PACK
__________ ____________________
1 4F OR 1R is shorted
2 6F OR 3R is shorted
3 2F OR 5R is shorted
4 1F OR 4R is shorted
5 3F OR 6R is shorted
6 5F OR 2R is shorted
• Press the ESC key. The display
changes to:
Failure Detected
(press ESC)
Shorted : 123456
(press ESC)
Failure Detected
(press ESC)