CHAPTER 4. OPERATION 38
• To avoid noise increasing and damages to
the compressor due to mechanical reso-
nance, some operating speeds are forbid-
den by soſtware for all control modes.
• When one or more errors occur, the cor-
responding “H” bits are set to 1. Example:
Overload and Under speed LSB →06h.
• The Frequency and Drop-In modes can
have serial communication only for mon-
itoring purpose. This functionality can be
used for product diagnostic.
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