Function Description - Siemens Sinamics CU240D-2 DP Operating Instructions Manual

Function description

Figure 6-3 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 6- 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
activate the ON command again in order that the
inverter exits the state.
S2 The inverter waits for a new command to switch
on the motor.
S3 The inverter waits for "Enable operation". The
"Enable operation" command is always active in
the inverter factory setting.
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
6.2 Sequence control when switching the motor on and off
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.
Advanced commissioning
105