Rockwell Automation WebPak 3000 DC Drives Hardware Reference, Installation and Troubleshooting User Manual
Page 56
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4-14
WebPak 3000 DC Drive Hardware Reference
Note that conduction will not begin until the firing angle is sufficiently advanced (
PHASE
FIRE TEST DELTA
(P.309) more than 60 degrees). A rate limit block limits the rate of change
of firing angle advances to prevent sudden increases in current. To prevent the drive from
entering continuous conduction during this test,
PHASE FIRE TEST DELTA
(P.309) should not
exceed 89 degrees.
Figure 4.3: Thyristors Fail to contact
11. Press STOP/RESET to stop the armature phase fire test.
12. Turn off power to the drive (lockout and tag as necessary).
13. Either unlock the motor armature or remove the bulbs and reconnect the motor armature
leads.
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