motortronics CSD Series, Operation & Service Manual

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CSD Series Variable Frequency AC Drive
MOTORTRONICS
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L1 L2 L3 P R T1 T2 T3
Table 8 A - Power Connection Troubleshooting
P = Positive of DC Bus
Figure 8 - 1
Sample Terminal Locations
(See Figure 3 - 5 for other terminal arrangements)
(Test Pin)
Warning!
The following power section checks are power-off tests. You should
remove the incoming power, wait for the red charge lamp to go
out and then disconnect the power leads on terminals L1, L2, L3
and T1, T2, T3. Note: Digital VOMs will give false ohmic readings
so they are unacceptable for the following tests. You can, however,
use these digital meters if they have a diode tester (forward
conduction voltage measurement). The following table gives good
and bad readings for each power component. Using the diode
check mode of the meter is preferable.
8.3 Maintenance
The CSD Series drive requires no routine checks. It will function
efficiently and its normal operation lifetime will be longer if it is kept
clean, cool and dry. However, loose electrical connections will cause
overheating, so the electrical connections should be checked
ocassionally and look for any discoloration or other evidence of
overheating.
WARNING!
During service inspection, turn off AC main circuit power and
wait for charging indicator LED 101 to extinguish (at least 10
minutes) before touching any circuit components. Also ensure
there is no DC voltage present before servicing the DC bus. Failure
to adhere to this warning could result in serious or lethal injuries!