Figure 41: Black flip dot
Figure 42: Red flip dot
WARNING
A tripped circuit breaker is an indication of a serious fault condition, and must never be reset without
an inspection of the drive by certified techinican.
OptiSpeed compressor drive details (0490A, 0612A, 0730A, and 1278A amp
drives)
The 0490A, 0612A, 0730A, and 1278A amp drives have the same basic function as the 0490 and 0774
amp drives, but the precharge of the drive is different.
The precharge is now completed through a precharge and supply contactor, which are control
by the drive logic board. During the precharge period the drive logic board will command the
precharge contactor to close for 12 seconds. During this time, the voltage will increase across the
143
YMC
2
Mod B with OptiView
™
Control Center
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