2-12 Component Test Procedures
Phase Output Power module. If the drive fails any of these tests, replace
the Gate Driver board.
9. Connect the multi-meter (ohms) black test lead to the DC- Bus Bar and
the red test lead from the multi-meter to the output terminal on the U
Phase.
10. Shine an intense light into the UL fiber optic receiver on the Gate Driver
board. This should gate the IGBT and the multi-meter should indicate
that the IGBT is short-circuited. This will happen if the circuit from the
fiber optic receiver to the output terminal is functioning properly.
11. Connect the multi-meter red test lead to the DC+ Bus Bar and the black
test lead to the UH output terminal.
12. Shine an intense light into the UH fiber optic receiver on the Gate
Driver board. This should gate the IGBT and the multi-meter should
indicate that the IGBT is short-circuited. This will happen if the circuit
from the fiber optic receiver to the output terminal is functioning
properly.
13. Repeat steps 9 - 12 for VL and VH on the V Phase Gate Driver board.
14. Repeat steps 9 - 12 for WL and WH on the W Phase Gate Driver board.
Important: The test does not verify that both blocks are operating. If one
block is not operating, the drive will indicate an I
2
T hardware
fault.
Checking the Rectifying
Module(s) on AC Input
Drives
600V ac input, 460A and 502A frame 11 drives have only one Rectifying
module. Complete the “Testing 600V AC Input, 460A and 502A Drives
”
procedure below only if you are checking the Rectifying module on a 600V
ac input, 460A and 502A drive. If you are checking the Rectifying module
on a 400V ac input, 590A, 650A or 730A, or 600V ac input, 590A drive
refer to Testing 400V AC Input, 590A, 650A or 730A, or 600V AC Input,
590A Drives on page 2-14.
Testing 600V AC Input, 460A and 502A Drives
Important: This procedure requires special equipment and training. Only
qualified and trained personnel should perform these
procedures.
1. Remove power from the drive. Refer to Removing Power from the
Drive on page 3-3.
2. Remove the covers from the power structure. Refer to Removing the
Covers from the Power Structure on page 3-13.
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