9-5
9.4 Sleep / Wakeup Function
The PID Sleep function can be used to prevent a system from running at low speeds and is frequently
used in pumping application. The PID Sleep function is turned on by parameter 10-29 set to 1. The
inverter output turns off when the PID output falls below the PID sleep level (10-17) for the time
specified in the PID sleep delay time parameter (10-18).
The inverter wakes up from a sleep condition when the PID output (Reference frequency) rises above
the PID wake-up frequency (10-19) for the time specified in the PID wake-up delay time (10-20).
10-29 =0: PID Sleep function is disabled.
10-29 =1: PID sleep operation is based on parameters of 10-17 and 10-18.
10-29 =2: PID sleep mode is enabled by multi-function digital input
Refer to the following figures for PID sleep / wakeup operation.
PID Sleep Function
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