SJE Rhombus VARIOspeed LCD Manual De Inicio Rápido página 9

Parameter List
PID Sleep Boost (P. 1366, P. 1367, P. 1368)
PID Sleep Boost is used to reduce the amount of sleep and wake-up cycles of the system due to extremely low flow
or frequent flow/no-flow conditions. The VFD accomplishes this by boosting the pressure setpoint by the Sleep Boost
Level. If the system pressure reaches the setpoint plus the Sleep Boost Level within the Sleep Boost Waiting Time, the
VFD enters sleep mode. If the system pressure fails to reach the pressure setpoint plus the Sleep Boost Level within
the Sleep Boost Waiting Time, the VFD continues its normal operation without entering sleep mode. When the VFD is
in sleep mode and the system pressure drops below the Set Pressure minus the Start Pressure Differential for the
Output Interruption Cancel Time the VFD exits the sleep mode and normal pressure control resumes.
P. 1366 – Sleep Boost Level
The Sleep Boost Level is measured in the percentage of the scaled pressure transducer. For example, if the pressure
transducer used has a full scale value of 200 psi and a 5 psi boost in the Set Pressure is desired for the PID Sleep
Boost function, then the Sleep Boost Level would be set to "2.5" (Pressure Boost ÷ Transducer Scale * 100  5 ÷
200 * 100 = 2.5). Default value: 9999 (disabled)
P. 1367 – Sleep Boost Waiting Time
The Sleep Boost Waiting Time is the amount of time that the VFD attempts to reach the boost pressure before exiting
the PID Sleep Boost function and returning to normal pressure control operation. Sleep Boost Waiting Time is measured
in seconds. If the boost pressure is reached before the Sleep Boost Waiting Time has expired, the VFD immediately
enters sleep mode. The Sleep Boost Waiting Time is measured in seconds. Default value: 0 sec
P. 1368 – Output Interruption Cancel Time
The Output Interruption Cancel Time is used to delay waking from sleep mode when the system pressure drops below
the Set Pressure minus the Start Pressure Differential. The Output Interruption Cancel Time is measured in seconds.
Default value: 0 sec
Set Pressure
Output Frequency
Sleep Frequency
®
VARIOspeed LCD Quick Start Manual
Sleep boost level
System Pressure
Less than Sleep Freq. More than Sleep Freq.
Sleep boost waiting time
The sleep status starts when the system
pressure exceeds the boost pressure
within the Sleep Boost Waiting Time.
Output interruption cancel time
Sleep period
System Pressure drops
below Set Pressure minus
Start Pressure Differential
Time
9