Siemens SINAMICS G120 Operating Instructions Manual page 164
Low voltage inverters
built-in units with cu250s-2 control units and
encoder evaluation
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- List manual (1256 pages) ,
- Manual (732 pages) ,
- Operating instructions manual (550 pages)
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Advanced commissioning
6.2 Sequence control when switching the motor on and off
Function description
Figure 6-2
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 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 "En‐
able operation" command is always active in the
inverter factory setting.
162
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 CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG
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