Siemens SINAMICS G120D Operating Instructions Manual page 122

Advanced commissioning
8.3 Sequence control when switching the motor on and off
Function description
Figure 8-4 Sequence control of the inverter when the motor is switched on and off
Inverter states S1 ... S5c are defined in the PROFIdrive profile. The sequence control defines the
transition from one state to another.
Table 8-1 Inverter states
The motor is switched off
Current does not flow in the motor and the motor does not
generate any torque
S1 The inverter waits for a new ON command.
The ON command is currently active. You must ac‐
tivate the ON command again in order that the in‐
verter exits the state.
S2 The inverter waits for a new command to switch on
the motor.
S3 The inverter waits for "Enable operation". The "Ena‐
ble operation" command is always active in the in‐
verter factory setting.
120
The motor is switched on
Current flows in the motor and the motor generates a torque
S4 The motor is switched on.
S5a, The motor is still switched on. The inverter brakes
S5c the motor with the ramp-down time of the ramp-
function generator.
S5b The motor is still switched on. The inverter brakes
the motor with the OFF3 ramp-down time.
Converter with the control units CU240D-2
Operating Instructions, 10/2020, FW V4.7 SP13, A5E34262100B AH