Sleep / Wake-up Function
This function is used to achieve the maximum extent of energy-saving ac‐
cording to the type of loads in actual applications, for example the hydraulic
system with small leakage or accumulator. This function runs in parallel to the
speed adaptation mode, while DRn 5020 ASF is active.
Code
Name
Setting range
Default
Attri.
E5.15
Sleep level
0.00...[E0.09] Hz
0.00
Run
E5.16
Sleep delay
0.0...3,600.0 s
60.0
Run
E5.17
Sleep boost time
0.0...3,600.0 s
0.0
Run
E5.18
Sleep boost amplitude
0.0...100.0 %
0.0
Run
E5.19
Wake up level
0.0...100.0 %
0.0
Run
E5.20
Wake up delay
0.2...60.0 s
0.5
Run
Tab. 7-15:
Parameter list of sleep / wake function
The frequency converter may go into the sleep mode when all the conditions
below are met:
●
[Pressure feedback] > Pressure command value x [E5.19] ''Wake up
level''
●
[Speed adaptation output] < [E5.15] ''Sleep level''
●
[Duration] t ≥ [E5.16] ''Sleep delay''
●
The wake up level or sleep boost amplitude has unit of per‐
centage. This percentage is referred to pressure command
value in bar.
●
Speed adaptation output means the DRn algorithm speed
setpoint that the system is controlled at for optimal operating
point energy wise. This value has the same unit as sleep
level, i.e. Hz.
Bosch Rexroth AG
DOK-SYTROX-DRN5020****-IT05-EN-P
90/143
Frequency-Controlled Pump Drive System Sytronix DRn 5020
Commissioning of Sytronix DRn 5020 System
