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Honeywell HVAC232 Series Applications Manual page 129


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Sleep min frequency
Sleep delay
Wake-up error
This function will put the drive into sleep mode if the frequency stays below
the sleep limit for a longer time than that set with the Sleep Delay (P14.12).
This means that the start command remains on, but the run request is
turned off. When the actual value goes below, or above, the wake-up error
depending on the set acting mode (P10.10) the drive will activate the run
request again if the start command is still on.
Actual value
Wake u error
Sleep delay
Sleep min
Regulating mode
Fig. 67. Sleep min frequency, Sleep delay, Wake-up error
Application manual HVAC232/402 | Document 27-652 | Issue ENG06 | 2019-08-07
Regulating mode
Sleep setpoint boost
Setpoint boost time
Sleep max loss
Sleep loss check time
These parameters manage a more complex sleep sequence. After the time
in P14.12, the setpoint is increased of the term in P14.14, for the time in
P14.15. This will cause a higher output frequency.
Frequency reference is then forced at minimum frequency and the feedback
value is sampled.
If the variation on the feedback value stays then lower than P14.16 for the
time in P14.17, the drive will enter sleep condition.
If this sequence is not needed, then program
• P14.14 = 0%,
• P14.15 = 0 s,
• P14.16 = 50%,
• P14.17 = 1 s.

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