Siemens SINAMICS G120 Original Instructions Manual page 316

Setting functions
8.7 Application-specific functions
Set energy-saving mode
Parameter Description
p1080 Minimum speed
0 (factory setting) ... 19500 rpm. Lower limit of the motor speed is
independent of the speed setpoint.
p1110 Block negative direction
Parameter to block the negative direction
p2200 Technology controller enable
0: Technology controller deactivated (factory setting),
1: Technology controller activated
p2251 = 1 Technology controller mode
0: Technology controller as main setpoint (factory setting),
1: Technology controller as supplementary setpoint
p2298 Technology controller minimum limiting
Parameter for the minimum limiting of the technology controller
p2398 Energy-saving operating mode
0: Energy-saving mode inhibited (factory setting)
1: Energy-saving mode enabled
p2390 Energy-saving mode start speed
0 (factory setting) ... 21000 rpm. As soon as this speed is fallen below, the
energy-saving mode delay time starts and switches off the motor once it
expires. The energy-saving mode start speed is calculated as follows:
Start speed = p1080 + p2390
p1080 = minimum speed
p2390 = energy-saving mode start speed.
p2391 Energy-saving mode delay time
0 ... 3599 s (factory setting: 120). The energy-saving mode delay time starts
as soon as the output frequency of the inverter drops below the energy-saving
mode start speed p2390. If the output frequency increases above this
threshold during the delay time, the energy-saving mode delay time is
interrupted. Otherwise, the motor is switched off after the delay time has
expired (if necessary, after a short boost).
p2392 Energy-saving mode restart value (percentage)
is required if the technology controller is used as the main setpoint.
As soon as the technology controller deviation (r2273) exceeds the energy-
saving mode restart value, the inverter switches to normal operation and the
motor starts with a setpoint of 1.05 * (p1080 + p2390). As soon as this value is
reached, the motor continues to operate with the setpoint of the technology
controller (r2260).
p2393 Energy-saving mode restart speed (rpm)
is required for external setpoint setting. The motor starts as soon as the
setpoint exceeds the restart speed. The restart speed is calculated as follows:
Restart speed = p1080 + p2390 + p2393
p1080 = minimum speed
p2390 = energy-saving mode start speed
p2393 = energy-saving mode restart speed
316
Inverter with CU230P-2 Control Units
Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG
Via tech. Via external
setpoint setpoint
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