Siemens SINAMICS G120 Original Instructions Manual page 314

Setting functions
8.7 Application-specific functions
Note
Energy-saving mode after switching the inverter on
After switching the inverter on, a waiting period starts in the inverter. The waiting period is at
most the following times:
• p1120 (ramp-up time)
• p2391 (energy-saving mode delay time)
• 20 s
If the motor does not reach the energy-saving mode start speed within this waiting period,
the inverter activates energy-saving mode and switches the motor off.
Additional setting options are provided in the List Manual in function diagram 7958 and in the
associated parameter descriptions.
If you want to prevent frequent activation and deactivation, before deactivation you still have
to set a short speed boost. The boost is deactivated with p2394 = 0.
To avoid tank deposits, particularly where liquids are present, it is possible to exit the
energy-saving mode after an adjustable time (p2396) has expired and switch to normal
operation.
The settings required for the respective variant can be found in the following tables.
Activate energy-saving mode with setpoint setting using the internal technology controller
With this operating mode you have to set the technology controller as the setpoint source
(p2200) and use the output of the technology controller as the main setpoint (p2251). The
boost can be deactivated.
Figure 8-36 Energy-saving mode using the technology setpoint as the main setpoint with boost
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Inverter with CU230P-2 Control Units
Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG