92
For 100150HP drives, while standing on a nonconductive surface and wearing insulated
gloves (600V), remove the top two screws of the regulator panel and tilt the panel forward.
See figure 9.4. Measure the DC bus potential at the bottom of the fuse holders on the
Power Module Interface board on the back of the regulator panel. Take care not to touch
any conductive traces. Reattach the regulator panel.
Step 5. Once the drive has been serviced, reattach the drive's cover.
Step 6. Reapply input power.
Figure 9.1 DC Bus Voltage Terminals (125 HP Drives)
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