Siemens SINAMICS G120P, Operating Instructions Manual

Page: 417 / 496

Functions
7.7 Application-specific functions
Inverter cabinet units
Operating Instructions, 12/2014, A5E32923362A
417
7.7.17 Hibernation mode
The hibernation mode is especially suitable for pumps and fans. Typical applications include
pressure and temperature controls.
The hibernation mode offers the advantages of energy saving, lowering mechanical wear
and reduced noise.
Note
If a motorized potentiometer in the inverter delivers the setpoint in hibernation mode, you
have to set p1030.4 and p2230.4 = 1.
Note
In STARTER, the function is called "Hibernation".
Function
In the hibernation mode, the inverter switches the motor off if the plant or system situation
permits this and back on again if required.
The hibernation mode starts as soon as the motor speed drops below the hibernation mode
start speed. The inverter switches the motor off only after an adjustable amount of time has
elapsed. If, during this time, the speed setpoint increases above the hibernation mode start
speed due to pressure or temperature changes, the hibernation mode is exited and the
inverter goes into normal operation.
In the hibernation mode the motor is switched off, but the inverter continues to monitor the
speed setpoint or technology controller deviation.
● For an external setpoint input (without technology controller) the speed setpoint is
monitored and the motor is switched-on again as soon as the setpoint increases above
the restart speed. The restart speed is calculated as follows: Restart
speed = p1080 + p2390 + p2393.
In the factory setting, the positive speed setpoint is monitored, i.e. the motor is switched
on as soon as the setpoint exceeds the restart speed.
If you also want to monitor the negative speed setpoint, you have to monitor the absolute
setpoint value. This can be set using p1110 = 0.
Additional setting options are described in the List Manual, in function block diagrams
3030 and 3040 as well as in the associated parameter descriptions.