Update notice
15
consequence, the PID process controller decreases the motor speed. However, due
to natural losses in the pipes and the low efficiency of the centrifugal pump at low
speeds, the motor does not stop but keeps rotating. The sleep function detects the
slow rotation, and stops the unnecessary pumping after the sleep delay has passed.
The drive shifts into sleep mode, still monitoring the pressure. The pumping restarts
when the pressure falls under the allowed minimum level and the wake-up delay has
passed.
Settings:
Parameters:
Parameter Additional information
9902 PID control activation
4022…4026 Sleep function settings
Parameter Additional information
1401 PID sleep function status through RO
Alarm Additional information
PID SLEEP Sleep mode
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